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Why does cool deck crack?

2/10/2024

 
Cool Deck, like any concrete surface, is susceptible to cracking due to various factors, with thermal expansion being a primary cause. When concrete is exposed to temperature fluctuations, it undergoes expansion and contraction. If the expansion joints are not correctly spaced or if they are insufficient, the concrete may develop cracks as a result of these temperature-induced movements.

In hot weather, the concrete can absorb heat and expand. If the surface temperature is significantly different from the interior temperature or if there are inadequate measures to accommodate this expansion, cracks may form as the concrete cools down.

The key factors contributing to cool deck cracking include:
  1. Insufficient Expansion Joints: Improperly spaced or inadequate expansion joints can restrict the concrete's natural movement during temperature changes, leading to cracking.
  2. Temperature Fluctuations: Significant temperature variations, especially in hot weather, can result in thermal expansion and contraction, contributing to cracks if the concrete is not designed to accommodate these changes.
  3. Inadequate Substrate Preparation: Poor substrate preparation, including improper cleaning or surface irregularities, can impact the adhesion of the cool deck material, potentially leading to cracks.

To minimize the risk of cracking, proper installation, attention to expansion joint spacing, and consideration of temperature fluctuations during the application process are crucial. Additionally, regular maintenance and addressing any signs of cracking promptly can help prolong the life of the cool deck surface. If you need a Cool Deck contractor contact us. 

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