Solve Your Concrete & Wood Problems Easily, Safely, Cost Effectively, and Permanently!
For concrete
Fortress Deep Seal
The best concrete densifier, hardener and waterproofing product. A one-time application that protects concrete and strengthens it, extending its life.
For concrete, brick & stucco
Shield Top Seal
A penetrating sealer that completely seals and waterproofs concrete, brick, cured asphalt, stucco and sandstone surfaces.
For wood
PetraWood
Internal wood sealer. The perfect one-time treatment for exterior wood: it keeps moisture out, strengthens the wood and extends its life.
Shop our sealers
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Fortress Deep Seal
Regular price From $56.99 USDRegular price -
Shield Top Seal
Regular price From $58.99 USDRegular price
Two products, one system
How Fortress Deep Seal and Shield Top Seal Work Together
Combination products tend to work against themselves. Using two separate products, Fortress Deep Seal and Shield Top Seal, gives each one room to do its job.
How our sealers work
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How Fortress Deep Seal Works
Read moreFortress Deep Seal permanently waterproofs concrete slabs and walls. Its proprietary catalyst forms a silica gel inside the concrete that dries hard like glass.
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How Shield Top Seal Works
Read moreShield Top Seal doesn't sit on the surface. It works its way into the concrete, creating a hydrophobic barrier, with no change to the look and no sheen.
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How PetraWood Works
Read moreThe catalyst in PetraWood reacts with the acids and alkali present in wood, forming an internal seal and water barrier.
Permanent Solutions are the Best Solutions
Why seal every year, when once is enough?
Resealing concrete or wood every year eats up time and money. Our sealers go on once and keep protecting for good, so you can stop worrying about it.
For dog kennel owners
Anyone Can Apply It
“I also was impressed with how easy it was to treat the concrete floor… The directions were detailed and it was so easy to apply.”
“If I can do it, anybody can!”
A Kennel Kit customer
My basement has cinderblock walls. Will Fortress Deep Seal work on it?
Concrete block walls made of cinderblock present a completely different challenge. Because of their porosity and the number of cracks and joints, additional materials are generally required to moisture proof them.
How do I know Fortress Deep Seal will soak into my concrete?
Splash a little water on it to see if it soaks in. If it does, then Fortress Deep Seal will, too. If previous waterproofers or paint prevent penetration, the old material must be removed first.
Should the concrete be wet or dry?
Fortress Deep Seal is best applied to damp concrete, although it will work as intended when applied to dry concrete. Shield Top Seal must be applied to dry concrete.
Can I apply in cold weather?
Do not apply if the surface temperature is below, or going to drop below, freezing within 6-8 hours after application. If a product freezes in the container, thaw it out completely and shake well before using; freezing will not harm the product.
How do I apply the products?
Roll, brush or spray any of the products. Use a 3/8" to 1/2" roller, or any pump sprayer (we recommend a fan tip, not a conical tip). See our detailed application instructions for each product.