A well-designed outdoor space should provide safety and beauty for years. However, surfaces, especially those exposed to New Orleans’ fluctuating weather, can crack if not properly maintained. That’s where expansion joints come in, offering a simple yet effective solution.
If you’re looking for durable, crack-free surfaces, get in touch with the top masonry contractor in New Orleans, LA.
Phone: (504) 285-6050
Email: contact@neworleansmasonryla.com
What Are Expansion Joints?
They are intentional gaps placed in surfaces to accommodate natural movement. Just like concrete, materials like brick and stone expand and contract with temperature fluctuations, moisture exposure, and ground movement. These joints absorb that movement, which reduces the risk of cracks. Without them, the stress caused by environmental changes can lead to visible and costly damage.
Why Do Pool Decks Crack Without Expansion Joints?
Although masonry is durable, it is not immune to movement. Here are the three most common stress factors:
- Heat and Temperature Changes
- Water and Moisture Exposure
- Ground Movement
How Expansion Joints Help Prevent Cracking
They work as follows:
1. Relieve Stress From Expansion
Instead of bricks or pavers pushing against each other and cracking under pressure, the joint gives the material room to breathe.
2. Control Movement
In order to keep your deck level and prevent damage from spreading over the whole surface, expansion joints direct where movement can happen.
3. Protect Mortar Joint
Mortar may crack due to pressure. Properly spaced expansion joints help preserve the integrity of the mortar.
4. Help Manage Water Runoff
Flexible materials also help direct water, keeping it from pooling under the deck where it could cause soil erosion.
Where Are Expansion Joints Placed in Pool Decks?
The placement depends on the design, material, and environmental conditions. In general:
- They are placed between sections of stone or brick that exceed a certain length (often every 8–12 feet).
- Near steps, drains, or fixed structures like walls or the pool edge.
- Around curved areas or corners where movement is more likely.
A professional mason knows how to read the layout and predict movement points. And then place them where they know they will work.
Types of Joint Materials Used in Masonry Work
Various fillers are used based on your requirements. For pool decks, the material must withstand water, sun, and foot traffic:
- Flexible backer rods with sealants (silicone or polyurethane)
- Foam expansion joint strips
- Rubber or neoprene inserts
Need Expert Masonry Services in New Orleans?
If you’re planning a new installation or repairing an existing surface, proper expansion joints are a must. New Orleans Masonry Contractors provides expert solutions that are suited to Louisiana’s climate.
📞 Call: (504) 285-6050
📧 Email: contact@neworleansmasonryla.com
Can cracks be repaired without replacing the whole slab?
Yes, with techniques like epoxy injections or resurfacing. However, prevention is always better.
How often should joints be placed?
Typically every 8–12 feet, but it depends on the layout, materials, and conditions. A masonry pro can assess your space accurately.
How long do joint materials last?
With proper installation and quality materials, they can last 15–25 years or more.
Is it too late to add a joint if my deck is already installed?
Not necessarily. A professional masonry contractor can assess the surface and, if needed, cut a flexible space into the deck. This added joint helps relieve pressure and lowers the risk of future cracking.
