4.33 out of 5 based on 3 customer ratings
(3 customer reviews)

1 Gallon Ultra Concentrate MAKES 4 GALLONS: $44.88

The industries most innovative concrete sealer formulas just got better! 1 Gallon Ultra Concentrate makes 4 gallons of sealer, equating to 75% less packaging, 50% less transportation cost and 75% less empty container waste making the Ghostshield formulas extremely sustainable.



Product Description

Sila-Tek 3500 Recommended for Sealing: Warehouses, Industrial facilities, concrete that will be polished

Color: Clear

VOC’s: None

Coverage per Gallon:  Average 1000 square feet after reconstitution with water

Finish Characteristics: Does not change overall appearance of the substrate

Application Temperature: 45 degrees F – 95 degrees F

Cure Schedule: Allow material to dry for 24 hours to achieve maximum benefits

Primer: None required

Topcoat: None required. Can paint, seal or stain after using Sila-Tek 3500


  • Resists organic growth and the spread of radon.
  • Increases concrete’s compressive strength
  • Increases concrete’s adhesion of paints, epoxies and surface sealers
  • Efflorescence attacks are reduced.
  • Dries clear.
  • Non-slip surface
  • Easy to apply, labor-cost effective.
  • Nontoxic, no VOC’s and no harmful fumes.

For complete descriptions, MSDS Sheets, FAQ’s, testing and technical data visit

3 reviews for SILA-TEK 3500

  1. 4 out of 5


    Used this sealer and then used the Siloxatek product to prevent spalling on my driveway in the wintertime. Easy application process, but took a lot longer than I expected since there is a few days wait time between using each product. Applied them both a few months ago and the combination seems to be working well.

  2. 4 out of 5


    Use solely as a hardener was told this product would not waterproof

  3. 5 out of 5


    Bought this at the buy one get on free price – the best price out there for a silicate densifier!

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