Search This Blog

Tuesday, January 14, 2020

Who Should Pay For Scratched Glass?

OK People lets get real here.  If we clean windows we have scratched glass!  I have.  And it scares me every time I take on a job with brand new glass.  Because I know like you know that glass surfaces today are very scratch sensitive.  So;... the quality of the razor and the precision of the technique used are NOT the only reasons why glass scratches.  You can use the same exact razor and technique on two different windows and only scratch one.  The largest determining reason for scratches is actually scratch sensitivity.  Which is very difficult to quantify.  And the window cleaner is NOT responsible for scratch sensitive glass surfaces.  The manufacturer is.  But it is way too easy to put all the blame on the window cleaner.  Since before the windows were cleaned the windows were not scratched.  The window cleaner then has to defend himself.  Which is exceptionally difficult to do since very few people understand exactly what causes glass surfaces to be scratch sensitive.  All glass surfaces are believed to be the same and therefore the tools that are used to clean them are believed to be the means by which the windows are scratched.  I even had a customer tell me she believed the squeegee rubber scratched her windows!  I could not convince her otherwise.

This discussion is not however a discussion of how windows are scratched or why they are scratched, but rather who should pay for the damage.  I have written what I have here for the purpose of demonstrating how complicated by ignorance this issue is.  The problem in answering this question is we are looking for a singular scapegoat.  We are looking for a singular responsible entity.  When the reality is it is a "shared responsibility".  I mean why don't even the razor manufacturers do something to educate the window cleaner that there are windows out there that should not be touched by a razor blade?  Why don't the glass manufacturers put out some of the millions they make for the scientific research to determine exactly why some surfaces are scratch sensitive?  Why don't glass and window sales companies do more to inspect the surfaces of the products they sell?  Why don't general contractors perform inspections of the surfaces of the products they install?  And yes why don't we as window cleaners do more to first educate our customers about scratch sensitive glass?  Also why don't we as window cleaners make it much more of a practice to inspect the surfaces we clean before we use a razor or anything else to remove paint, etc?  Why don't we explore different products and techniques to remove debris from scratch sensitive glass surfaces?  Lastly why don't we as window cleaners have an all inclusive waiver signed by the owner and or general contractor we are working for?

When an insurance agency is approached by their client/window cleaning contractor over a specific building that had their windows scratched they have some detective work to do.  Simply because the insurance company that they use will likely deny the claim.  Leaving everyone without an answer.  Questions like are the windows scratch sensitive?  Did the window cleaner know about this ahead of time?  Does the window cleaner even know what scratch sensitivity is.  Was there a waiver put in place before the job began?  Was the insurance company asked about whether they would pay for a scratched glass lawsuit when the policy was purchased?  These are the questions that need to be answered to determine what percentage of the shared responsibility the window cleaner has.  But again I need to emphasize that this is a shared responsibility.

It is also necessary to learn whether the scratches were present before the cleaning.  Because they could have been created when the glass was moved, when the windows were put into storage, or when they were installed.  They might have been created by someone else such as a painter.  Then covered over by dirt.  And revealed when the windows were cleaned.  Since the window cleaner is the last contractor to work on the windows they will always be blamed for the scratches.  I have experienced this myself and believe that many thousands of window cleaners have also.

The bottom line here is that legal man must be called in to determine what the shared liability is with the help of the expert witness/glass consultant.  

Written by Henry Grover Jr.

To receive these posts directly in your inbox just type your address in the box at the top right, "Follow by Email".

Monday, December 30, 2019

Stain Removal; Polishes Not Acids

Once window glass has become stained by hard water/mineral deposits it has been damaged.  Simply put there has been an exchange of atoms between the glass surface, water, and the minerals/salts in the water.  One way to effectively and completely remove all of the mineral deposits is with a super abrasive polish.  These polishes are usually based on a cerium oxide, silica, zirconium oxide, or diamond.   The application of these polishes are done by hand or with a machine and a variety of different pads.  The restoration professionals out there such as Marc Tanner focus on polishes.  I have had many conversations with Marc over the years.  He always tells me that every job is different.  So the most effective technique requires trial and error.  In my opinion "precision" stain removal can only be accomplished in the field with a technique based on a super abrasive polish.  Not with an acid.  There are many problems with acids that can very easily and very quickly cause damage to the glass that cannot be easily repaired.  So even though acids such as hydrofluoric, sulfuric, and ammonium bifluoride will quickly remove mineral deposits, they do react with the glass every time, and can do damage to the window that can bring in a lawsuit.

Written By Henry Grover Jr.

Tuesday, December 17, 2019

Wiljers Xlite Scrubber Sleeve

There was a time when I scraped everything!  But times have changed.  No I never was sued for scratching a million in glass.  But I have read stories.  I also have scratched my share of glass.  With metal razors, plastic scrappers, and even 0000 steel wool.  These days I am VERY careful.  The first thing I do when starting a new job is to check the surface of the glass.  Is it defective and does it have any kind of a metallic high tech coating?  Surface analysis is an absolute must these days.  However even then it becomes necessary to adopt safer techniques then metal razors.  Yes there are times when razors are perfectly safe and absolutely necessary.  I still do use them myself.  But I am becoming more familiar with alternate techniques.  Such as the new Xlite from Wiljer Specialty Cleaning Products.  Here are a couple of pictures of my own personal Xlite Sleeve.

It was a snowy day and these pictures were taken on the trunk of my pretty blue Civic.  You can see the darker yellow fibers in the fabric.  These are hard and course.  Much harder then the other fibers.  Just on one side of the sleeve so you can flip it if you want.  They are great for scrubbing light dirt that you might want to blade.  So now you don't have to.  Just one more technique to make cleaning glass more safe.

The Xlite is definitely lighter than other sleeves.  But it does hold enough water for most larger windows.  I have been working with this sleeve for about two months now and have been rather satisfied with it.  If you would like to give it a go just give Richie a call and pick one up.

Wiljer Specialty Cleaning Products
34 Front Street - Box266
Indian Orchard MA 01151
Phone 413-543-5333

Written by Henry Grover Jr.

If you would like to receive these posts in your email as they are written just type your address in the box at the top right, "Follow by Email".

Thursday, December 5, 2019

Lets Work Together

If you have any special problem jobs that you need to do or price send me an email.  We can talk.

I am finally starting to work with people all around the world.  With the technology that we have today so many things are possible.  There really are no limits.  So I don't have to travel there.  But will be doing some travel over here on the east coast.  Just for the enjoyment of it.  I have been consulting with companies for 25 years.  Have visited many different states and looked at some very famous buildings.  It has been a tremendous amount of fun.  But all of this is nothing compared to what I can do now with the communications technology of the day.

This blog will start to include some of the stories of these different companies including pictures and videos that they send me.  Which I am already receiving.  This is actually VERY exciting!  And I am really looking forward to sharing with my readers.


Written by Henry Grover Jr.

To receive these posts as they are written please type your address in the box at the top right, "Follow by Email".

Monday, December 2, 2019

Smart Products for Coated Glass

The coatings industry is driving the glass industry.  This includes soft and hard low e coats, low maintenance glass, first surface reflective coatings, AR coated solar glass, and other high tech products.  This technology will continue.  Window cleaners have to deal with such surfaces.  What is of concern to us is the ignorance of the subcontractors that work around these windows.  When these windows are covered by paint, wood stain, concrete, hard water spots, silane and siloxane sealant rundown, and other contaminants they are according to GANA and the IWCA;... wasted.  The very first thing that you absolutely must do when you are introduced to such a building is make absolutely certain that the general contractor, maintenance company, and owner are aware of this fact.  Then if they want you to attempt to remove any of these contaminants, make sure you have a waiver in place signed and dated.

I don't believe any manufacturer has developed products for these surfaces.  No sealants, no restoration products.  It is just too niche.  Also many window cleaners have used acids, alkalies, and crude abrasives that have done damage that could not be corrected.  The windows have needed to be replaced.  This usually ends up in very large lawsuits.  One of the worst acids is hydrofluoric.  The only products that can be used for these surfaces are usually custom.  The best thing that a window cleaning company can do when they encounter a building with damaged coated glass is just walk away.

This blog is all about products.  Ones that others have developed.  And certain custom products.  I test out the commercial products and demonstrate such on the Glass Smart Product Development Youtube Channel.  Also I demonstrate the custom products that I have developed myself on my YT Channel.  My consulting work involves a blend of these two types of products along with an understanding of how to identify coated surfaces, defective glass surfaces, and more.  

Much of this however must happen on the job.  So when I can I like to travel to the job site so I can do my own testing and carry all of the custom and commercial products with me.  Although there are times because of distance that I must rely on the phone, pictures, videos and sending out different products, or having the window cleaners I work with order samples of different products direct from the manufacturers.  Which samples are usually free.

If you have any situations going on right now or planned, don't hesitate to send me an email so we can talk about it.

Henry Grover Jr.

Sunday, October 20, 2019

The 55 Inch Super Soaper Wand

The Super Soaper was created with much help from Wiljer Specialty Cleaning Products who provided this beautiful white sleeve.  It has just the right amount of pile to hold onto just the right amount of water.  They truly do make the very best sleeves for the window cleaning industry.  More importantly however is that the owner is willing to work with us in developing different technologies.  I developed the Super Soaper as an ultra niche product.  Hoping it would get attention.

Wiljer Specialty Cleaning Products
34 Front Street - Box266
Indian Orchard MA 01151
Phone 413-543-5333

The other part of this invention of course is the Super Soaper Siphon.  It fits on the bottom of a two inch PVC pipe.  The water can come in but can't get out.  So it becomes displaced by the wand on the downward motion and wets the sleeve.  The upward motion of the wand draws water up from the bucket into the tube.  With this tube I can easily soap up a 55 inch wand from a one gallon bucket.  I will be doing a video showing how I built my Super Soaper System.  There will be continual updates and improvements.

This invention is NOT practical for just a few large windows.  Definitely NOT for smaller windows.  A "small" 22 inch is much easier to use.  It becomes practical ONLY when doing about twenty or more very large windows.  Such as at a dealership.  Certain commercial jobs have many very large plates that take a great deal of time to wet.  Soren created the Sorbo line of squeegees to deal with these large windows.  For  decades now this design has proven itself.  I see the Super Soaper wand as an addition to the very large squeegee.  It will likely not be picked up by any manufacturer as they will see it as too much of a niche product.  Ultra niche products are usually passed over by large manufacturers.  There simply is not enough money in them

Wiljer would be willing to make sleeves as big as 55 inches.  I am thinking that there are more people out there that would want a 36, 42, or a 48 inch wand.  Any of these sizes are easy to make.  I bought a very small swivel wetter handle from Sorbo and unscrewed the handle which is held on by two screws.  Then I took a long metal handle from a broom.  Removed the broom and plastic ends.  Then screwed on the Sorbo swivel handle.  I did have to drill a couple holes in the handle with a drillpress.  That was the most difficult part.  Once done I just slipped on the sleeve and snapped it secure.

Improvements will be shortening the wetting time to five seconds, and learning what the percentage of time reduction is over a 22 inch wand on the same large window.  I need to demonstrate this improvement in a video.  As we all know time is king.  Commercial window cleaning is all about time.  Which is why I am very surprised there are not more videos out there demonstrating the super channel squeegees.  Instead we see many very small squeegees with wetting pads that flip over.  These are great for small or average size windows.  But when you have fifty windows that are twelve feet high and six feet wide give me a super channel any day of the week.  That is all I have to say right now!

Written By Henry Grover Jr.

To receive these posts directly in your inbox just type your address in the box at the top right, "Follow By Email".

Monday, October 14, 2019

Glass Surface Chemistry

In pure water chemistry one out of every 10,000,000 water molecules is dissociated into a hydroxide 'and' a hydronium ion.  Hence the water maintains a neutral pH.  It is neither acidic or alkaline.  If there are more hydronium ions (H3O) than hydroxide ions the pH is below 7 and the "pure water" is acid.  If there are more hydroxide ions then hydronium ions the pH will be above 7 and the water will be alkaline or a base.  Cleaning solutions use alkaline chemistries because most films and dirt on glass are hydrocarbon in nature.  Which are acidic.  Hence the two chemistries neutralize and cleaning happens.  However it is the hydronium ions that swap places with the sodium atoms in the near surface of soda lime/window glass.  The hydronium ions and sodium atoms inter-diffuse.   Which is the reason why Dr Paul Duffer says that glass is "alive".  It is very easy to change the chemistry of a glass surface with pure water if it is acidic.  And especially if the ambient temperature is raised.  An other way of saying this is that glass surfaces are very reactive.  This is demonstrated in our work every day.

Any window cleaner that has been working for ten years or more knows that not all surfaces are the same.  If you doubt this just start checking clean dry surfaces with a penny.  Then feel and listen.  They can pop and fizz as in the video here.  Or just be very rough.  They can also be perfectly smooth.  Not rough with no sound.

Everything I have been describing is what happens naturally.  We also change glass surfaces by polishing with microcrystalline super-abrasives such as cerium oxide.  Certain acids such as hydrofluoric, sulfuric, and ammoniumbifluoride do the same thing in a matter of thirty seconds.  Whenever hard water spots are removed with polishing slurries the glass becomes rough, very easy to scratch, and a stain sponge.  For all intents and purposes the surface is now DEFECTIVE!  This is an issue that no one in the window cleaning industry has recognized.  

I remember a building that Marc Tanner told me about that he restored.  It was four stories.  The first three stories released the stain with ease.  But the fourth floor was a total bear.  Come to find out an etchant/acid had been used before to remove the stains from just the fourth floor.  Then the stain reformed.  

It is also true that stains come off reflective metallic surfaces much easier than clear transparent glass.  Which releases stains much easier than dark tinted glass.  Dark glass can be an absolute bear.  Especially if it has been polished or "restored" with an acid such as HF.  Usually etchants will destroy dark glass.  They will leave an orange peal effect, or discolor.

The days of simply cleaning windows with a buck, mop, and a squeegee are long gone.  When we take on a store front we take on the maintenance and protection of the windows we clean.  This is true for window cleaners and auto detailers who work on vehicular glass. 

Vision glass that has been restored by having water stains removed should absolutely be sealed with a hydrophobic sealant.  This protects the window surface from scratches and more stains.  Here is a demonstration by Marc Tanner showing off  Nanovations NG1010.

Written by Henry Grover Jr.

If you would like to receive these posts in your inbox just type your address in the box at the top right, "Follow by Email".

Thursday, October 3, 2019

Water Marks

Water spots come from water.  The spots are mineral deposits left on glass by evaporation.  Water drops always form on top of old spots.  There they continue the process of mineral deposition.  But water does something more than deposit minerals.  The atoms within the water molecules react with the atoms in glass surfaces.  This is an exchange reaction which results in a breakdown of what is called the moderator matrix.  In particular the leaching of the sodium atom.  In enough time and at a high enough temperature time there is a breakdown of the silicon oxygen network which is the builder matrix.  When both the moderator and builder matrix has been broken down the near glass surface has gone through total dissolution.

Water marks are very similar to water spots. The greatest difference being dynamics.  Water spots are caused by static water drops.  Water marks are created by water drops that run down vertical glass surfaces.  Without "doing the science" as my friend Paul West says, it isn't possible to know exactly and to what extent the glass has undergone total dissolution or exactly how many minerals have been deposited on the water "tract".  Just as water drops tend to form on top of water spots, so do water drops tend to run down the same water tract.  After years of this activity visible curvy lines form.  They are much easier to see in direct sunlight.  And appear as dark diffuse lines.  Sometimes they run the full length of the window.  Sometimes they just run halfway down.  Enough water creates an interesting pattern of water marks.  When they form on the inside of a window they can be more easily seen from the outside looking in.  But are easily revealed with your breath in fog.

Water marks can be very difficult to remove just like spots.  I am guessing this is true because they are the result of etched glass.  I do know of one case of water marks that I was not able to remove them using cerium oxide.  It was necessary to use a diamond compound by hand.  The compound was based on artificial diamonds of about 3 microns particle size.  The diamond compound completely removed the marks.  Such that when fogged by my breath a film developed that was completely smooth and showed no marks at all.

I was able to locate a hard water spot remover today from Envirosafe called Waterspot Pro that was able to completely remove these water marks.  It is also much less expensive than diamond compound!  Here below is the purchasing and contact info.


Sold By Envirosafe Inc.
61535 S Hwy 97 suite# 5-415
Bend, OR 97702

Written by Henry Grover Jr.

To receive these posts in your inbox just type your address in the box at the top right, "Follow by Email".

Monday, September 30, 2019

Vehicular Glass Maintenance

Auto glass is usually never maintained.  Consequently it becomes stained by mineral deposits.  These look very bad and impair vision.  The Envirosafe product is able to rub it off by hand with paper towels.  Or you can use small three inch soft wool pads with a rotary machine.  Slow is best.

Have you ever looked at a couch bus?  They are huge.  Half of the surface area is glass.  Further every bus that I have ever seen has hard water stains covering every square foot of glass.  This is usually from regular washing and rinsing with ground water that is loaded with minerals.  But all of this glass can be polished so it is crystal clear. There are few hard water spot removers that will remove average spots by hand without scratching, and without the use of acids or other unsafe chemicals.  You will know that all of the spots have been removed if you fog the glass with your breath.  The fog will form an even film of water.  Any left over minerals will show up in the fog.  Even "invisible" deposits will show up in the fog film.  I typically use this method to show silica deposits left by water fed pole window cleaning.  The TDS of the cleaning/rinse water might be zero but it could still have silica.

Boats, especially yachts, have bad spots from ocean water.  Which can be very difficult to remove.  Further subway trains will develop thick organic stains from atmospheric pollution.  But the Envirosafe Spot Remover will take this off too.  There are many different stains on vehicular glass that should be removed.

The Envirosafe product sells for 15.95 per bottle.  But you can check out their website and order direct.


Sold By Envirosafe Inc.
61535 S Hwy 97 suite# 5-415
Bend, OR 97702

Written by Henry Grover Jr.

         Envirosafe Waterspot Pro 

Friday, September 20, 2019

Exposing The Secrets of Hard Water Stain Removal

So many people think all they have to do is spend the money and buy a commercial system for doing this type of work and they will be all set.  After buying the system they just have to call the manufacturer if they have any questions and problem solved.  Well friends and readers this is simply not the case.  In fact and I mean this completely, there is absolutely no commercial system out there that you can buy that will adequately work on every job.  Some will even do worse damage.  I am talking here about polishing systems.  I will not even mention acid based products.  These annoy me to no end.

If you choose to buy a commercial system just know that you are also throwing money away.  The better way would be to link up with a professional who does this every day and work side by side with them.  Buy a polisher and a grinder, along with various pads, and mix up your own compounds.  But still know that every job is different.  Some will be like eating cake.  Others will be impossible without as Marc Tanner calls it, "cutting glass".  You will need as your first step a method for cutting through all of the stains and even some of the glass.  This first step must leave the window with an even white haze.  Which will during the second step come off with a cerium slurry or compound.  Such will remove the haze rather quickly compared to the first step of grinding.  But you must know that there is also the question of what type of surface you are working on.  If it is a low e metal then you will end up stripping it right off.  That is damage.  So use caution.  There are many complications when doing this work.

One complication has to do with surfaces.  The same exact atom for atom stain will come off a low e coating much easier that from a transparent glass surface.  But the same exact stain will also come off a transparent glass surface much much easier that a dark surface.  Where the window plate has been tinted all the way through.  This type of window can be virtually impossible to clear without cutting.  

Another complication results when you discover that someone has been there before you with an acid.  Especially a hydrofluoric acid.  Certain acids have the tendency of removing only some of the stains but leaving maybe 20 percent.  Which can still be seen.  Such acids also will eat into the glass making the surface like a "sponge" so it will soak up any new stains and hold onto them with incredible power and strength.  You will then need to cut the glass and polish with a cerium.

Now while the quality of the cerium is not extremely important, the type of superabrasive used for cutting is.  Don't get me wrong.  The quality of the cerium is important.  And I wrote a post about this which you should find very interesting.  But the cutter is really critical.  This is because it actually sets up the surface for the cerium.  This is a two step, maybe even a three step procedure.  With the first step being the most important.

Every job will be completely different from the job before.  In fact, and this is where it gets really wacky, the windows on the same building can be very different from other windows on the same building.  If for no other reason than who was on that building before you.  Because you have no idea who it was and what they did.  Most of the time no one is going to tell you too.  So once again use caution.  These are the things the manufacturers will not tell you.  They just don't know.  The glass restoration professionals out there like Marc Tanner do not use commercial hard water removal systems.  They have been there and did that and have moved on.  These are the people you need to communicate with.  I have talked with several.  Marc of course is King.

Now finally you absolutely need to seal off the new surface with a hydrophobic product when you are done.  Only for just two very big reasons.  First the window is now extremely susceptible to very difficult stains.  Second every square inch is also now very susceptible to scratches.  Using the product NG1010 from Nanovations USA takes care of both of these problems.  So again;...never perform any stain removal procedure without using NG1010.  Do it EVERY time!

Written by Henry Grover Jr.

To receive these posts in your inbox as they are written just type your address in the box at the top right "Follow by Email"

Windocoat Paint

Windocoat paint is a water based art paint that dries completely water proof.  It is a great splash paint for several different reasons.  First it takes longer to dry than acrylics.  This gives you more time to work with it.  You also get more depth because you can come back and apply more paint so as to vary the darkness or lightness of the color.  Once it dries it is completely waterproof so the window can be cleaned with soapy water and squeegeed without stripping the paint.  It can be used both outside and inside.  Its most amazing property is that it can be peeled off dry when it is time to remove from the glass.  This is really important because there is no sloppy mess at all.  Also windows these days (especially tempered glass) are very easy to scratch with razors.  Considering the cost of replacement you would definitely NOT want to scratch even just a few windows. I have done a two month experiment with the Windocoat paint on the inside of some windows that do see the sun.  Expecting the results would be as incredible as the video I did entitled Peal Paint.  Unfortunately I had to use a scraper to get it off.  And it was not easy since the paint did not soften with water.  My opinion is to first test it out on your window and for the amount of time you intend to leave it on for.  I do believe it is a good product.  But like any product it has limitations.  Here is the Peal Paint video that plainly demonstrates how fantastic the performance "can be"!

The business and art of painting storefront windows and car windshields (otherwise known as "Splash") for advertising purposes has been around for a very long time.  It definitely has evolved over the years.  But in recent times it has waned somewhat because of technology.  Vinyl cutting and computers have taken over so much.  However the versatility of temporary art and the rather low cost compared to computer work are both high incentives for the customer to adopt this older much more personal and specialized service.

Written by Henry Grover Jr.
If you would like to receive these posts directly in your inbox just type your address in the box at the top right, "Follow by Email".

Friday, September 6, 2019

Peel Paint can be applied directly to any window without any prior prep.  It goes on smooth and easy.  I have been working with the lab to develop the three primary colors including black and white.  So there will be five different "colors".  At the time of this writing I have red, blue, and yellow.

The coming videos will use local artists to demonstrate how Peel Paint is used.  Once applied it requires about 45 minutes above freezing temps to dry completely.  Otherwise it can be applied inside also.  It is resistant to the effects of water as demonstrated here.  The first showing of how it stands up to soapy water "froze" in the video so I showed this again.  But it is very compelling to watch.  There is absolutely no sign at all of dissolution of the paint in the water.  This is great for us because it allows us to clean the window after the artwork is done.  We can continue with the frequency of our window cleaning without any interference.  It doesn't matter if the paintwork is on the inside or the outside of the windows.

Another fantastic advantage of Peel Paint is as demonstrated here it is very easy to remove.  Just start it with a single edge razor blade then gently peel it right off.  It can then be thrown away dry.  No soapy wet mess.  Or paint flakes all over the place that must be vacuumed up. But as has been discussed in the above post you will want to test it on your window ahead of time.  Also test for the full amount of time that you will be leaving it on.  Simply because it can be very difficult to remove if too much time passes.  Requiring the aggressive use of a razor scraper.  I had this happen to me after leaving it on for only two months.  So again testing is critical.  Yes the video demonstrates how incredible the results can be.  But that paint was only one hour old.  

As the seasons change people always paint their storefront windows.  Which always creates a problem for us.  Now it doesn't have to be that way.  Just show them this video and get them to change their paint.  Another problem is For Sale signs that are painted on.  Usually sales only last for a week.  So Peal Paint might be best for that application.  Again you should always test it first.

Written by Henry Grover Jr.

To receive these posts in your inbox just type your address in the box at the top right, "Follow by Email".

Friday, August 30, 2019

Scratch Sensitive Testing

There are an unbelievable number of windows out there that absolutely cannot be scraped with a razor blade.  These are both old and even brand new.  In fact new windows are more likely to have this problem.  Which is a surface that is very sensitive to scratches.

Some windows are not scratch sensitive at all.  One very easy way to demonstrate this is with a small coin.  Once the window has been cleared of all particulate dirt and sand you can lightly run a small coin across the surface.  As I have demonstrated here.  As you play the video turn the sound way up!  There is NO music in this video so you can easily hear every pop and fizz.  It sounds very rough with many "pops".  So it would seam there are many microscopic and some larger particles actually embedded in the surface.  These also seam to be the direct cause of scratches usually attributed to the razor blade.  The reality is then that the razor is not the direct cause of any scratches but only an aid.  Further it is not the only aid.

Scratch sensitive glass surfaces are absolutely NOT necessary.  We know this simply because not all glass has this problem.  Believe it or not but there are some windows even tempered glass which is incredibly smooth.  It is SO smooth in fact that you can lay right to it with a razor and not have to fear a single scratch.  It is SO smooth that when you run a coin across the glass there is not a sound.  But only complete silence.

The use of a razor or any other tool other than a wetting wand and a squeegee changes our work from routine to non-routine window cleaning.  This type of work becomes very complicated when removing paint, silicone, or hard water spots (and more) from scratch sensitive glass.  We then must know how to use compositional abrasives, and specialty organic solvents.  There are also other very special tools and chems to do this.  I am currently looking into such products to accomplish this type of work.  But the most promising tools are those that protect glass surfaces from paint, stucco, concrete, and more.  Such must absolutely be used if this kind of scratch sensitive surface is discovered at the time just before the windows are installed.

If you would like to receive these posts directly in your inbox just type your address in the box at the top right, "Follow by Email".

Also please subscribe to the Glass Smart Product Development YouTube Channel by going to

Written by Henry Grover Jr.

Wednesday, July 24, 2019

Elevance Clean 1200 and Plexiglass

If this video does not show on your phone please go to the link for my channel at the bottom of this post.

Clean 1200 is an excellent solvent.  True it is rather stinky but it is very powerful.  I put it through a very hard test here.  The paint that I used was a very strong paint.  Very thick.  Then I let it cure for a full month.  It was extremely difficult to get off even with a single edge razor.  But after a full hour of dwell time with the Clean 1200 I could scratch it off with my finger nail slowly.  When looking for a great solvent you will want one that has a very slow evaporation rate.  I did this test in 85 degree weather.  This allows you to let it set for a full hour.  Which will only make your job that much easier.  Otherwise even the most powerful solvent won't work at all.  Another thing is you will want a solvent that is miscible in water.  So a soapy water solution will quickly remove all of the residue.  Again the Clean 1200 is rather stinky so I would not use it inside.  But if you are working on a non-routine job and have your waiver signed, just use caution and make sure you clean up very well.

Now what we need to know is that even though the Clean 1200 is safe for glass and likely for tin oxide low e coatings as well; is absolutely NOT safe for plastic glazing.  This would be all three.  Not acrylic as is demonstrated here, nor polycarbonate, and or polyester/mylar.  I think how it crazes acrylic is the most demonstrative.  But the potential damage which can be done to the other two can also be quite bad.  Also non repairable!

Just to explain a little about what I have demonstrated.  When plexi is exposed to even the residue of most solvents and any type of physical stress, then it will craze.  That is crack up.  Such cracks can be long or zillions of very fine cracks depending on conditions.  The physical stress can be as I have shown here.  Or it can be vibrations from sound or just the constant slamming of a plexiglass door.  It can even be tight screws holding a plexi storm window on.  The stress might have been there for literally years.  But when you come along and use your wonder solvent to get some paint off, you could easily end up with cracks all around the edge where the screws were used.

I won't get into the chemistry and the physics of micro-fissures.  But you get the point!  In time I will post more videos on this topic.  So stay tuned to the channel and blog.  My goal is to educate and entertain.

Written by Henry Grover Jr.

Please subscribe to the Glass Smart YouTube Channel Here.

If you would like to receive these posts as they are written just type your address in the box at the top right, "Follow by Email".

Friday, July 19, 2019

Kleer Vu Demonstration


Contact Information;
Karen Wright
Kleer Vu Sales
3005 N 4th E
Idaho Falls, Idaho 83401

This product is based on a very special surfactant blend that attracts water when applied to glass and even plastic surfaces.  Which by the way are by nature quite hydrophobic, not hydrophylic!  It works very well on mirrors as you can see here.  Also sunglasses, regular glasses, swimming goggles, ski goggles, and many more situations.  What I am holding here is a two ounce bottle which fits very easily in your pocket or purse.  So you can carry it around wherever you go.

How does it become a "private label" product?  All you have to do is create your label on a computer using a graphics program.  Then send that by email attachment to Karen.  Tell her you found Kleer Vu on my YouTube Channel and Blog.  Then she has a print shop that they have negotiated the best price with who will print up a bunch of labels based on your artwork.  So be creative!  She will then fill the bottles with their anti-fog formula and send back to you however many bottles you want at the moment.  You will get a wholesale rate on the bottles and be able to sell them directly to your window customers for a good profit.  Once your customers get hooked they might even want to sell them to friends.  The most important benefit to you however is that the bottles become a business card.  Cards are just filed away and no one sees them again.  But these little bottles (or larger) of anti-fog will be carried around in purses or pockets.  People will be looking at them all the time.  Make sure all of your contact info is on the label.  Because one little bottle of anti-fog could win you a thousand dollar job.

I am working on a few other private label products right now that will work just as well as this one and maybe even better.  This is the way people.  Forget your business cards and flyers.  Private label products are the very best way to advertise your business!

Written by Henry Grover Jr.

Please Subscribe to the Glass Smart Product Development YouTube Channel Right Now!

There are so many short videos coming your way to help you with new products and new technology which will put you way ahead of the competition.  Those companies that want to continue with just a mop, bucket, and squeegee will be left in the dust!

If you want to continue to receive these posts as they are published just type your address in the box at the top right, "Follow by Email".