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FAQs

ORIGINAL - All-Purpose Waterproofer

1. Can Seal-Krete Original All-Purpose Waterproofer be applied below Grade?

Seal-Krete Original can be applied below grade on interior walls and floors as a primer prior to painting, provided there is no evidence of hydrostatic pressure. One thin coat is recommended on basement floors. Two coats are recommended on vertical walls. Seal-Krete Original cannot be applied on exterior substrates below-grade.

2. Can Seal-Krete Original All-Purpose Waterproofer be used on my concrete floor before installing new carpet?

Yes. Seal-Krete Original will seal the floor and bind dust particles. It can also be used to seal concrete floors before installing tile and hardwood flooring. It also serves as a premium sealer and is compatible with most glues, thin sets and mastics required to install interior flooring products.

3. Can I use Seal-Krete Original All-Purpose Waterproofer on the exterior of my home before repainting? The stucco is chalking and I want to ensure that the paint properly adheres to the stucco.

Seal-Krete Original is an excellent primer/sealer when repainting both residential and commercial properties. It binds chalky surfaces and can be applied over oil-based, as well as water-based paints and coatings. Seal-Krete Original can also be added to water-based paints to improve the spread rate. It contains a high quality resin and improves the quality of the paint. Four to eight ounces per gallon is recommended when mixed with the topcoat of paint.

4. I have a couple of gallons of Seal-Krete Original All-Purpose Waterproofer left over from painting my home this spring, can I use it to seal my driveway?

No. Seal-Krete Original cannot be used on exterior horizontal surfaces as a clear finish coat. We recommend Seal-Krete Clear-Seal Concrete Protective Sealer for this application.

5. I’m the president of the Historic Committee in my community and we’re looking to preserve several of the original brick buildings in the downtown area. Some of the bricks are crumbling due to moisture over the years. Can we use Seal-Krete Original All-Purpose Waterproofer to preserve these important landmarks?

Yes. Seal-Krete Original has been used for more than 25 years to protect and preserve America’s landmarks. The buildings should be properly cleaned and free of any efflorescence before sealing. Fragile, loose, and missing mortar joints will require tuck pointing prior to application of Seal-Krete Original.

6. I have a wood deck that I’ve recently cleaned. Can I use Seal-Krete Original All-Purpose Waterproofer to seal the deck?

No. Seal-Krete Original cannot be used on exterior horizontal surfaces as a clear sealer. It can be used, however, as a stain and seal by mixing sealer 1:1 with a water-based porch and deck enamel.

7. Can I use Seal-Krete Original All-Purpose Waterproofer to seal and protect my new stockade fence?

Yes. Seal-Krete Original can be used to seal wood fencing. It can be used as a clear finish coat or can be tinted to any color using exterior water-based paint. Mix 1:1 for a solid color, or 1 part paint to 1 part sealer for a transparent stain. When used as a clear coat, Seal-Krete Original will not prevent the natural graying of the wood.

8. Can I use Seal-Krete Original All-Purpose Waterproofer to seal my birdbath? Is it harmful to birds and squirrels?

While Seal-Krete Original Waterproofing Sealer is an environmentally safe product that is not harmful to flora, fauna or humans, it is not recommended to seal birdbaths, pools, ponds, or fountains that contain running or standing water.

9. Can Seal-Krete Original All-Purpose Waterproofer be applied to dull, painted aluminum?

Yes. Seal-Krete Original can be used as a clear coat to revive fading aluminum or as a primer/sealer before repainting aluminum.

10. I have an older home with T-111 on the gable ends. Can I use Seal-Krete Original All-Purpose Waterproofer on the wood prior to painting?

Yes. Seal-Krete Original is an excellent primer/sealer for vertical wood to help seal and protect wood from the elements.

11. Can Seal-Krete Original All-Purpose Waterproofer be used on tilt-up and in-place concrete to waterproof these substrates?

Yes. Seal-Krete Original is an excellent choice for tilt-up and in-place concrete. When applied according to specifications, Seal-Krete Original will completely waterproof both substrates. All chemicals and form release agents must be properly removed before application.

12. Can Seal-Krete Original All-Purpose Waterproofer be used on split-face block?

Due to the porosity and profile of this substrate, we do not recommend application of Seal-Krete Original. For split-face, decorative and fluted block, use Seal-Krete Heavy-Duty Waterproofer, a 25% solids version of Seal-Krete Original. This product was formulated specially for lightweight, low-density block.

13. Can I use Seal-Krete Original All-Purpose Waterproofer to seal my canvas awnings?

No. Seal-Krete Original is not recommended on canvas or any type of fabric as a clear sealer.

14. Can Seal-Krete Original All-Purpose Waterproofer be use as a primer on ornamental lawn statues before repainting?

Yes. Seal-Krete Original can be used as a primer to bind chalking and fading paint before painting lawn statues.

15. Can I apply Seal-Krete Original All-Purpose Waterproofer to my asphalt shingles to lock down the granules and prevent them from being carried away by wind-driven rain?

No. Seal-Krete Original is not recommended for application on asphalt shingles.

16. Can Seal-Krete Original All-Purpose Waterproofer be used on terracotta, barrel tiled roofs as a sealer to reduce mildew?

Yes. Seal-Krete Original can be used on barrel tile to seal out the porosity of the substrate and to curtail mold and mildew formation. Application of Seal-Krete Original will also facilitate both maintenance and cleaning of the tile.

17. Can I use Seal-Krete Original All-Purpose Waterproofer to seal my asphalt driveway?

No. Seal-Krete Original is not recommended for application on asphalt substrates.

18. Can Seal-Krete Original Waterproofing Sealer be applied as a primer sealer on Durarock before tiling shower stalls?

Yes. Seal-Krete Original Waterproofing Sealer can be used on Durarock before installation of tile and grout in a shower area. SKO will serve as an adhesion promoter for the thin set used to set the tile.

19. Can Seal-Krete Original Waterproofing Sealer be used on chalking and fading vinyl siding prior to painting?

Yes. SKO can be used as a primer/sealer before painting vinyl. It will also serve as an adhesion promoter for the topcoat of paint.

20. Can Seal-Krete Original Waterproofing Sealer be used on E.I.F.S.?

Yes. SKO can be used on E.I.F.S.

21. Can I use Seal-Krete Original Waterproofing Sealer on DRYVIT?

Yes. Seal-Krete Original Waterproofing Sealer can also be used on DRYVIT.

22. Is Seal-Krete Original Waterproofing Sealer safe to use in cafeterias and commercial kitchens?

Yes. SKO is USDA criteria for a structural surface coating that may come in contact with food.

23. Can I use Seal-Krete Original Waterproofing Sealer on drywall before painting or wallpapering?

Yes. Seal-Krete Original Waterproofing Sealer can be used as a primer/sealer on drywall prior to painting or installing wallpaper.

24. What is the ratio for mixing paint with Seal-Krete Original Waterproofing Sealer?

The ratio for mixing paint with Seal-Krete Original Waterproofing Sealer varies, depending on the desired aesthetics. SKO can be tinted anywhere from a transparent stain to a solid hide. For transparent stains, mix paint to sealer 1:4, respectively. For a solid color, mix paint to sealer 1:1.

25. Is Seal-Krete Original Waterproofing Sealer breathable?

Yes. Seal-Krete Original Waterproofing Sealer will allow for vapor transmission while completely waterproofing approved substrates from the elements.

26. We recently moved into a new home. The previous owners had both dogs and cats. We are replacing the old carpeting and would like to seal the floor. Will Seal-Krete Original Waterproofing Sealer work for this application?

While Seal-Krete Original Waterproofing Sealer can be used to seal concrete floors, it is a breathable coating and will not encapsulate the odor of pet urine.

27. Can Seal-Krete Original Waterproofing Sealer be used on concrete floors in wild animal enclosures?

Yes. SKO can be used to seal concrete floors used to house wild animals as long as the floors are clean and dry prior to application. On smooth trowel floors, Seal-Krete Gator Hide, a non-skid additive, should be mixed with Seal-Krete Original Waterproofing Sealer to improve traction. Both products are environmentally safe and completely harmless to animals.

28. My contractor got over spray on the windows of my home. How do I remove the Seal-Krete Original Waterproofing Sealer?

To remove SKO, soften the coating with Simple Green® or Water-based Goof-Off® and carefully remove with a straight-edged razor. Windows should subsequently be rinsed with clean water and soap to remove any residue.

29. My contractor accidentally got over spray on the hood of my car. What can I use to remove SKO from the paint?

We recommend that you have your car professionally buffed and waxed to remove the sealer. Some cleaners contain harsh chemicals that will mar and dull the paint finish. Removal of SKO from a vehicle should be done by a professional.

30. My hardwood floors are dull and warn. I’ve stripped the floors and would like to apply a coat of Seal-Krete Original Waterproofing Sealer on them to restore the wood. Is this recommended?

No. Seal-Krete Original Waterproofing Sealer should not be used as a clear finish coat on horizontal wood floors.

31. Can I apply SKO on my exterior flagstone patio?

No. Application of Seal-Krete Original Waterproofing Sealer is not recommended for exterior horizontal surfaces. Use Seal-Krete Garage Floor Sealer or Seal-Krete Masonry Sealer for this application.

32. I’d like to apply a clear protective coat over my painted patio floor. Can I use SKO over a painted, horizontal surface?

No. Seal-Krete Original Waterproofing Sealer should not be used over a painted, horizontal surface. Use Showroom Finish for this application.

33. Can I use SKO on my concrete paver driveway?

No. Seal-Krete Original Waterproofing Sealer should not be used on horizontal pavers as a clear sealer. We recommend Seal-Krete Garage Floor Sealer or Seal-Krete Masonry Sealer for this application.

34. I have clay pavers set in mortar on my lanai. Can I coat them with Seal-Krete Original Waterproofing Sealer?

No. SKO is not recommended on clay pavers due to the high density of this substrate. Use Seal-Krete Multi-Surface, clear satin finish, or Seal-Krete Showroom finish, hi-gloss urethane-fortified acrylic sealer.

35. We recently had new concrete countertops installed. Can we use Seal-Krete Original Waterproofing Sealer to seal and protect them?

No. SKO is not recommended to seal concrete countertops.

36. What type of warranty is available for Seal-Krete Original Waterproofing Sealer?

Seal-Krete offers a limited 5-year warranty on approved substrates. These substrates include, but are not limited to, several types of brick, concrete block and masonry. Please call our Technical Department for specific details regarding warranty.

37. Can Seal-Krete be used as a pH buffer for new stucco and plaster?

To properly prepare new stucco and plaster for painting prior to the 30 day cure, seal the substrate with Seal-Krete Original Waterproofing Sealer after 10 days. Seal-Krete Original will buffer the alkalinity of the new stucco or plaster, lowering the pH to a level between 7 and 9 when applied per specification.

Please refer to the pH buffer for new stucco document for more info.

EPOXY-SEAL Concrete & Garage Floor Paint

1. What is Epoxy-Seal?

Epoxy-Seal is a blend of acrylic and epoxy resins specially formulated for concrete/garage floors.

2. Is Epoxy-Seal a two-component system?

No. Seal-Krete Epoxy-Seal is a one part system and is ready-to-use.


3. What are the color choices for Epoxy-Seal?

Epoxy-Seal comes in armor and slate gray. Color cards with additional color options are also available with the white and deep tint bases of Epoxy-Seal.


4. Will Epoxy-Seal yellow?

No. Epoxy-Seal is UV stable.


5. Where can Epoxy-Seal be applied?

Epoxy-Seal can be used in interior and exterior high traffic areas including garage floors, driveways, shop floors, basements, pool decks, walkways, patios, porches and more. Epoxy Seal an also be applied on interior and exterior walls including concrete block, stucco, brick and T-11 siding were a harder more durable scrub resistant finish is desired.


6. What type of roller should I use to apply Epoxy-Seal?

Based on the type of surface you will be coating, we would recommend one of the following rollers:

  • Smooth-troweled surfaces: 3/16” – ¼” nap roller
  • Broom-finished surfaces: 3/8” nap roller
  • Rough or textured surfaces: ½” nap roller


7. How can lap marks be avoided when applying Epoxy-Seal?

Unless a “wet edge” is maintained during application, working back into a semi-dry or dry area can double the film thickness and result in lap marks. To avoid lap marks, paint in small sections so there is less time fore each section to dry completely before you start in on the adjacent one. Avoiding applications in direct sunlight will also minimize lap marks, since heat speeds up the drying time.


8. What should I do if I have lap marks in my recently applied Epoxy-Seal?

If lap marks have already occurred with the Epoxy Seal, a second coat, spread evenly, and applied while maintaining a wet edge is necessary to make the surface more uniform.


9. I have just painted my patio with Epoxy-Seal and some areas are shinier than others. What should I do to correct this?

Flashing is a term used to describe shiny spots that occur due to improper or non-uniform sealing of a surface that is porous or varies in porosity. The Epoxy-Seal will tend to penetrate or soak in the porous areas more than the dense areas causing apparent shiny spots on the dense area. If the surface is extremely porous or if adhesion is of concern, the surface should be primed with one coat of Seal-Krete Lock-Down Concrete Bonding Primer prior to application. Otherwise, another finish coat of paint spread uniformly will generally correct the condition. Some unevenness can be expected on rougher surfaces, additional coats of paint tend to achieve better uniformity.


10. I have painted my garage floor with Epoxy-Seal and some areas have more gloss than others. What is the cause and how can I correct it?

Uneven brushing or rolling during application can result in varying film thickness and uneven gloss. Thinner films will generally be lower in sheen than thicker areas. The Epoxy-Seal must be spread uniformly to avoid this.


11. I thought my garage floor would have a satin finish after applying the Epoxy-Seal. Most areas do not have any sheen at all. Why is this?

High moisture conditions such as high humidity, dew and rain during drying can flatten satin to glossy finishes. These conditions can also cause whitening of finishes. If either of these conditions occur, application of another finish coat under more favorable conditions will be required.


12. My garage floor was painted in sections with the Epoxy-Seal and the paint varies in color. Why is this?

Colors can vary in appearance if all paints are not intermixed before application. By inter-mixing the paint, you can avoid variations in the finished paint film.


13.What is the proper preparation steps before applying Epoxy-Seal?

Click here for the Epoxy-Seal prep quide
Click here for Clean-N-Etch floor cleaning video


OIL STAIN REMOVER Concrete & Garage Floor Paint

1. Will Oil Stain Remover remove oil stains from sealed concrete surfaces?

No. Oil Stain Remover is recommended for removing oil stains from bare concrete substrates. Sealed surfaces should be treated with a recommended degreaser; otherwise, the sealer could be stripped from the area as well.


2. I applied another degreaser to an oil stain that had been on my garage floor for a long time. It did not remove the stain. Would you recommend Oil Stain Remover to remove old oil stains from concrete surfaces?

Yes. However, oil stains that have deeply penetrated the concrete often require more than one treatment and additional scrubbing to effectively remove the older, more stubborn stains.


3. I purchased Oil Stain Remover to treat the oil stains on my garage floor. Do you think it would also remove paint overspray from the floor?

Yes. Oil Stain Remover will actually strip the paint overspray from the garage floor.


4. How long does it take Oil Stain Remover to turn to powder?

Oil Stain Remover could take 4 hours or more to dry to a powder. Dry time of the material depends on ventilation of the area, porosity of the concrete, humidity and temperatures. It performs best in moderate humidity with temperatures above 70 degrees F. Dry time will be significantly longer in temperatures less than 60 degrees F.

For more information contact our technical department.

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