Waterproofing installation guidelines are the same regardless of whether the structure is a balcony, terrace, deck, or flat roof. So while we refer to balcony waterproofing installation on this page, all these structure types are included. To make sure you are satisfied with our work, we follow a consistent, proven waterproofing process. But before that process begins, we need to make sure some things are in place and ready for us to get started.
Balcony waterproofing requirements
Some basic requirements must be met before we can install our industry-leading waterproofing system.
Structurally sound working surface
The working surface must be structurally sound and free of mold. This is usually not an issue with new construction. But, it can be a problem with older structures. Begin by examining the balcony for wear, tear, and damage. Look for signs of mold and cracks. While cracks are easy to spot, mold can be harder to see.
If you find visible mold spores, it can mean that mold is spreading throughout your home. It is critical to identify any roof leaks because where there are leaks in Texas, there is going to be mold. This is especially true along the Texas Gulf Coast and in East Texas. You can also locate mold by smell. If your balcony or any living structure under or adjacent to your balcony smells musty, that is a sign of mold. With long-term exposure to mold, your family might even suffer from breathing issues or chronic headaches. So it is always best to find and kill any mold before the waterproofing process.
In addition to having a sound, mold-free structure, make sure the surface is clean with no heavy dust, residue, or debris present.
¾-in. CDX plywood substrate on ¼-in.-per-ft slope
We prefer installing our waterproofing system on ¾-in. CDX plywood. It can be either tongue-in-groove or blocked-seam. CDX plywood is not waterproof, but it provides some water resistance and works well as a substrate.
Ponding can be a serious problem in balconies. To minimize ponding and potential water ingress, we require installing the substrate with ¼-in. fall per linear foot away from the main wall.
Temperature and weather limitations on balcony waterproofing
While Texas weather can be unpredictable, temperatures are typically on our side. We will not install our waterproofing system if it is colder than 40°F (4.5°C), if it is raining, or if the substrate is saturated. The good news is that we can typically install within a few days after the CDX plywood has the chance to dry, even if it gets direct rain.
In the Austin area, there are 229 days of sunshine per year. In San Antonio, there are 224. Even in humid Port Arthur and far East Texas, there are 212 sunny days per year. So the odds of weather delays for balcony waterproofing companies are minimal.
Stay off of it for a day
The last requirement is one of the most important. Avoid excessive foot traffic on the waterproofed surface for 24 hours after installation is complete. This ensures a strong, even seal and gives you the best shot at a totally waterproof balcony for years of enjoyment.