We often illustrate in our articles the more pleasant projects we renovate but today we are going to take on a tough project that has numerous issues. Looking at the before photograph of this pool deck, you can see where there is a deep crack along the left side of the pool. The reason for this crack is that they didn’t place a control joint around the pool to allow for movement. Normally, you would have a coping stone around the perimeter of the pool that separates the pool deck from the coping. Then this joint between the coping and pool deck is caulked to allow for expansion and movement. Which obviously didn’t happen here and therefore, when the deck began to move, it caused the deck to severely crack and that is one of the issues we need to address in the solution for renovating this pool deck.
But the failures didn’t stop here. There were no control joints placed in any of the pool deck causing the entire deck to crack up in random direction which presents a problem with any type of repair because there is no rhyme or reason to the pattern of the cracks. In theory, a control joint is placed in the concrete in hopes that when the concrete moves, any cracking would occur in the control joint. Well with no control joints, the concrete will crack in random directions all over the concrete slab. Lesson, control joints are your friend. This concrete was also poorly finished and even with all of this cracking, was not a desirable look for any pool. So, let’s take on the challenge and make this pool deck beautiful and most importantly functional.
Dealing With The Existing Cracks: While this pool deck is fairly old and has settled about as much as it is going to, the probability of these cracks mirror back through any resuracing application you apply is very likely. But the cracks are also random throughout the pool deck without rhyme or reason and we will need to incorporate that fact into our proposed solution.
To deal with the cracks, we have chosen to make them a part of the solution. Taking a negative and turn it into a positive. So for the cracked deck along the perimeter of the pool where there should have been coping stones installed separate from the pool deck and then a caulked control joint placed between the coping and the pool deck to allow for movement. Therefore, we used a crack chaser diamond wheel to clean up the existing crack. Then we used the same crack chaser and carved up the coping area into individual stones to look like large coping stones. We then caulked between the pool deck and the newly renovated coping stones.
Random Pool Deck Cracks: As mentioned earlier in this article, we have cracks running in different directions all over the deck and we know that if we don’t deal with these cracks, they will probably mirror back into the resurfacing application we install. The decision was made to open up these existing cracks with a crack chaser and make a random stone pattern all over the deck using these existing cracks as a starting point. Turned out great! After carving the deck up into a stone pattern, we injected epoxy into the cracked joints to make them stronger. Now if there is any movement, it will be in the stone joints and will not be visible.
Resurfacing The Deck: We chose to install a Quartz Aggregate System to finish this deck for its durability, ability to hide imperfections of the existing deck and for its slip-free surface. We ground down the entire pool deck with a walk behind concrete diamond prep machine. Then applied the Quartz application in a color selected by the client and sealed with a high solid tinted polyurethane tinted. We then took the crack chaser again and opened up all of the joints of the stone pattern to make them crisp. We then took an exterior concrete dye and painted all the joints with an artist brush to have a contrasting grout joints around the stones for an awesome, durable and properly functioning pool deck. This is where structural know-how and art come together to provide the ultimate in concrete restorations.
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This article was provided by:
Daniel Yalacki of Concrete Restoration Systems by Malibu Pools