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#1 Alternative to Deck-O-Seal

Save Hundreds &
Do It Yourself

Don’t waste money on a service industry guy to replace your mastic,
watch my video’s and Do It Yourself

What's  Pool Seal™

Pool Seal™ sets a new standard for swimming pool mastic or expansion joint sealant. Finally an alternative to, Deck-o-Seal®

A 2 part poly activated compound, which forms a lasting seal, repairable , natural looking (with our exclusive topping) seal between your pool coping stone and deck.

An absolute value over the industry’s product of choice, Pool Seal™ last’s for years,  solve your pool deck coping sealant problems easily and economically with Pool-Seal.

Created exclusively for the pool owner in mind to “Protect Your Pool Today & Protecting Your Cash from the Industry Forever” .


To offer the Do It Yourself minded homeowner an inexpensive way to repair the pool mastic around their pool. The stuff that’s between the coping stone and your deck, it has a lot of names pool caulk, pool grout, pool mastic and so on. The industry widely chooses to use Deck-o-Seal mainly because the single major swimming pool wholesaler SCP only carries Deck-o-Seal in their inventory. Deck-o-Seal also is very difficult to work with it has a fast pot time. Which means it sets up very fast and the hotter it is the faster it sets up. Generally speaking, you NEVER use 100% of the 96oz you purchased. With that being said it’s NOT the only game in town


Polyurethane – Based Joint Sealant

POOL-SEAL SL5 a two-part, elastomeric, polyurethane-based joint sealant designed for concrete and stone expansion joints. POOL-SEAL SL5 is used for caulking and sealing joints subject to concrete movement to provide a firm, flexible, weather-tight seal. Ideal for sealing joints around swimming pools, and is applicable for both interior and exterior use.

  • Provides permanent and uniform watertight seal.
  • Topping Stones included to provide attractive look and will not allow discoloration of seal from the sun.
  • Prevents uncontrolled cracking by allowing expansion and contraction during temperature changes.
  • Stays flexible … won’t become brittle or crack due to ultraviolet exposure.
  • Not affected by pool chemicals.
  • Retains joint soundness in service once it’s cured and can be stretched or compressed up to 50% without tearing away from edge (if installed ½ inch deep)


Polyurethane -Based Joint Sealant


Pool-Seal SL7 is a single component (NO MIXING REQUIRED), self-leveling, premium-grade polyurethane sealant with an accelerated curing capacity.

  • 1-component, NO MIXING REQUIRED
  • Self-leveling, pourable
  • Accelerated curing
  • Extremely elastic & High durability
  • Resists aging and weathering
  • Excellent adhesion
  • Convenient, easy-to-use packaging
  • Not affected by pool chemicals.


Meet A Few Of Our Happy Customers:

Got this instead of deck o seal.  Glad I did. It was easy and works as published so far. Looks great.

Jim R.

Burleson, TX

Pancakes! As easy as making pancakes! I have a 20 tear old pool and the mastic around the coping has shrunk and separated from the concrete. I called the pool company to get an estimate of repair and what kind of product they used. To save a lot of money I searched the internet and tried Deck-O-Seal. I followed the instructions and the product never set and I had to remove it (what a hassle), the company blamed it on the batch being expired. I got full refund and then ordered Pool Seal. I spoke with Robert first explaining my prior dilemma. He assured me this would not happen. I received my Pool Seal and it was as easy as making pancakes, just mix and pour, then sprinkle and I was done. Sets up within 24 hours, Awesome product!

Mike V.

Riverside, CA

This material is awesome!  The kit could not be more user friendly to use with step by step easy instructions.  The stones I ordered were even delivered in a easy application bottle so I would not make a mess.  End product looks great and functions really well.  I had a thin spot and easily repaired it with the extra material I had.  I highly recommend this product to anyone.  My pool builder and cleaner are very impressed with the product too!

Steven S.

Carlsbad, CA


If you want to hire a professional to seal your pool, we can also come to you.

Pool-Mastic serves the Dallas area.

Contact for a quote.

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Save Money and Do It Yourself