Expansion Joint Sealant Application

During the construction of pools, it’s essential to create controlled expansion joints. These gaps serve a crucial purpose, allowing for settling and providing space for your pool deck to move without causing damage to the pool structure. One of the most critical controlled expansion joints exists between the swimming pool coping and the surrounding decking.

When the pool is initially installed, a white foam expansion joint is placed before pouring the decking. This foam material serves as a placeholder for creating the expansion joint around the pool’s perimeter. However, it’s important to note that this foam does not seal the joint and tends to deteriorate rapidly. As a result, it should be removed and replaced with a urethane sealant.

The ideal choice for sealing the expansion joint is a self-leveling engineered urethane sealant designed specifically for this purpose. This high-quality material ensures a long-lasting seal. Our team specializes in the installation of these coatings and sealants around your pool area, not only preserving its original appearance but also enhancing it while providing protection.

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Effective Maintenance

Ensuring proper maintenance of the expansive joint encircling the pool, situated between the coping and decking, is of utmost importance for several compelling reasons. Failure to maintain this gap adequately may result in:

  1. Exposure to the elements, leading to potential separation and cracking of the tile and coping.
  2. Attracting debris, weeds, and insects, creating an unsightly and unhygienic environment.
  3. Safety concerns for individuals, particularly fingers and toes.
  4. Aesthetic issues, with white foam visible or, worse yet, gaps and crevices around the pool.
  5. Erosion beneath the decking and the pool’s beam due to constant exposure to water from swimmers and natural elements.


  • $8.50 per linear foot if no sealant is currently applied.
  • $10 per linear foot if existing sealant is being removed and reapplied.

*Additional charges may apply for exceptionally wide gaps and multiple issues.

Expansion Joint Sealant Application Services

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