Concrete Pool Deck Sealers  /  Products  /  DECK-O-SEAL – Polysulfide-Based Joint Sealant

DECK-O-SEAL – Polysulfide-Based Joint Sealant

DECK-O-SEAL - Polysulfide-Based Joint SealantSeal all cracks and joints with DECK-O-SEAL two-part, elastomeric, polysulfide-based joint sealant. DECK-O-SEAL is used for caulking and sealing joints subject to concrete movement to provide a firm, flexible, weather-tight seal. It is ideal for sealing joints around swimming pools, and is applicable for both interior and exterior use. DECK-O-SEAL is highly resilient and has excellent recovery characteristics after extended periods of compression or elongation.

  • Highly resilient with excellent recovery characteristics
  • Provides permanent and uniform watertight seal.
  • Prevents uncontrolled cracking by allowing expansion and contraction during temperature changes.
  • Stays flexible … won’t become brittle or crack due to ultraviolet exposure.
  • Resists abrasion, weathering and moisture … elevated temperatures will not cause discoloration.
  • Not affected by today’s pool chemicals.
  • Retains joint soundness in service once it’s cured and can be stretched or compressed up to 25%.

View DECK-O-SEAL Technical Specifications   |   Mixing Video

DECK-O-SEAL Coverage Chart

Next Steps: Contact Us | Locate a Distributor


Bob Hilber March 18, 2011 at 9:34 am

I live in San Diego, CA. Where can I purchase your products?

Admin March 18, 2011 at 1:41 pm

Thank you for your interest! To locate the distributor nearest you, please call our Pomona office at 909-469-2606.

Pete Quinn March 29, 2011 at 1:12 pm

I was told by the pool supply store where I bought Deck-o-Seal, that for expansion joints that have no expansion board and are deep (4″-5″), that all I had to do was pack the space with sand until I attained the proper fill level to accommodate your product (1/2″). After reading your instructions, it states that the joint must be free of any loose materials, would this include the packed sand base I made or will Deck-o-Seal self-level over the packed sand without any adverse impacts? Thanks.

Admin March 30, 2011 at 3:35 pm

Pete, we would not recommend filling the expansion joints with sand. We would instead recommend using a backer rod material to control the depth of the joint. Backer rod is a round foam rod that is placed in the joint and held at the proper depth by friction. If your joint is 1/2″ wide use at least a 5/8″ to 3/4″ rod. Thanks for your comment and interest in Deck-O-Seal.

D Austin July 20, 2011 at 1:18 pm

I was reading one of your comment/reply regarding putting sand in the joint. I also, was told by the pool company that built our pool that they always fill the gap with sand. However, the sealent has come completely out in about half of our pool, and what I thought was material from dog toys, evidently is the backer rod. It’s a round white foam. Do I need to use that instead of the sand?
Also, should I remove the remaining sealent and do the entire pool? Thank you

Admin July 23, 2011 at 11:47 am

What is commonly used in pool construction is a white or grey foam that is 1/2″ thick and 4″ wide and is placed against the coping before the deck is poured. When the deck is poured, this foam creates the expansion joint. The top 1/2″ on the foam is removed and DECK-O-SEAL is then placed into the joint. It is common to place a little sand on top of the foam, controlling the depth of the joint and to fill any voids that would allow the DECK-O-SEAL to escape from the bottom. We have also seen installers place newspaper in the joint to control the depth and to seal the bottom of the joint. On remodel, the same techniques are used as well as using backer rod. What we do not recommend, however, is to fill the entire joint with sand. Also, if sand is used, be sure and clean off all sand that is on the sidewalls of the joint.

U.S. Green Building Council Association of Pool & Spa Professionals Independent Pool & Spa Service Association National Plasterers Council

For further green and LEED information on DECK-O-SEAL products, visit the W. R. MEADOWS Green Page.