Glass-Crete safely removes concrete, mortar and other cement-type materials from architectural tempered and plate glass surfaces. This product is specially designed for the toughest construction clean-up projects.


  • Created by professional window cleaners and chemists
  • Prevents the need to use scrapers in many situations
  • Easily neutralized by water
  • Polymeric material bonds to concrete particles and helps to prevent scratching
  • Installs protective coating to prevent further concrete contamination
  • Won’t harm caulking, glass, metal, or stone surfaces if used correctly
  • A safe alternative to conventional acids
  • Makes the difficult and dangerous task of removing concrete easier
  • Fast-acting
  • Prevents the need for costly replacement of glass


This product is designed to be used on glass and anodized aluminum surfaces in construction cleanup projects

Glass-Crete Product Info Chart
Solvent Water Based
Flammable No
User Friendly No
Economically Efficient Yes
Environmentally Friendly No
Color Clear
Smell Unique


Remove as much of the large concrete pieces and spatters as possible by chipping at the material with a tool. In some instances, the use of a pressure washer with a turbo tip will help to remove large pieces of concrete from the glass.


This product will break down concrete and mortar, but only microscopic layers at a time. Large pieces will take longer to remove. Use a spray bottle to apply product to the stained area on the glass. Lightly agitate with a soft bristle brush to loosen the concrete. Allow the product to remain on the surface until all residues are visibly removed. Use water to rinse, dilute and neutralize the cleaner on the glass and reveal the glass surface. Make sure to wet all adjacent surfaces such as precast and concrete prior to application of this product on glass. Do not allow this product to remain on any stone surfaces as it will stain. Repeat as many times as necessary to remove concrete residue.

If the concrete material has been left on the glass for an extended period of time, it may etch into the glass causing damage that may not be repairable with this product. In this situation, use Presto’s Glass ReSurfacer® System to polish and renew the glass.

Tip:  Presto’s Glass Defender®  Series can be used on glass surfaces prior to concrete or masonry work that might allow concrete or mortar material to come in contact with the glass. The Glass Defender Series will protect the surface so that if concrete does attach to the glass, it can easily be removed by standard window cleaning procedures. The Glass Defender Series will also help to protect the glass from scratching if scrapers need to be used in the cleaning process.


The information provided by Presto for the safe and effective use of this product, and all of our products, is believed to be good and accurate. However, due to the many different possible applications of this product, careful considerations should be made when selecting its suitability for each surface.
The information provided should never be substituted for individual testing to ensure the product’s compatibility with each surface intended for use. The purchaser shall assume all responsibility for determining the suitability of this product. When used as intended, this product will perform as stated. 

No other warranty can be made for this product, verbally or written.

Presto warrants this product to be free from defects. In the event this product is found to be defective, we will provide a sufficient amount of product to replace the defective product.
Concrete Slurry on Anodized Aluminum Window Frames

Glass-Crete is special order only. Call for pricing
View Before & After Photos

Justin McGarty,
May 19, 2012, 1:29 PM