Pool mastic replacement in DFW
Cracked or missing sealant between your coping and deck lets water in behind your pool. We replace it before it turns into a bigger repair.
The small joint that protects your pool
Mastic is the flexible sealant in the joint between your pool coping and the deck. That joint is there on purpose: the deck and the pool shell move separately as the ground shifts, and the gap gives them room. The mastic fills the gap and keeps water out of it.
Sun, pool chemicals and years of movement eventually dry mastic out. Once it cracks or pulls away, rain and splash-out run straight into the joint and behind the pool. In North Texas, expansive clay soil and winter freezes turn that water into loose coping, cracked tile and damage to the pool itself.
Replacing worn mastic is one of the simplest and least expensive ways to prevent those repairs. Mastic work is part of our pool remodeling service, and we also do it on its own.
Signs your mastic needs replacing
- Cracks or splits along the joint
- Sealant pulling away from the coping or the deck
- Gaps or missing sections
- Hard, brittle or crumbling mastic
- Weeds or grass growing through the joint
How we replace it
- 01Remove the Old JointWe cut out the failed mastic and clear dirt and debris from the gap.
- 02Prepare the GapThe joint is cleaned and backed so the new sealant bonds to both sides and can flex.
- 03Install New MasticFresh mastic goes in around the whole pool, finished to blend with your coping and deck.
Mastic questions.
What is pool mastic?
Mastic is the flexible sealant in the expansion joint between your pool coping and the surrounding deck. The joint lets the deck and the pool move separately, and the mastic keeps water and debris out of it.
How do I know my pool mastic needs replacing?
Look along the joint around the pool. Cracks, gaps, sealant pulling away from the coping or deck, hard or crumbling material, and weeds growing through are all signs the mastic has failed.
What happens if I don't replace failed mastic?
Water gets into the joint and behind the pool. In North Texas, shifting clay soil and winter freezes turn that into loose coping, cracked tile and, over time, damage to the pool itself. Those repairs cost far more than new mastic.
When is the best time to replace pool mastic?
Any time it has failed, but before winter is ideal. Water that freezes in an open joint does the most damage, so replacing worn mastic in the fall protects the pool through the cold months.
Can mastic be replaced without a full pool remodel?
Yes. Mastic replacement can be done on its own. It is also commonly done alongside new coping, tile or deck work, since those all meet at the same joint.
Seal it before winter.
Free consultation anywhere in Dallas–Fort Worth.