The Dangers of Leaks
Peaked roofs and flat roofs both aim to keep water out of your property, they are installed differently. A qualified commercial roofing contractor in Houston can install a flat roof correctly so that there will be no leaks. If installed incorrectly, a flat roof has the potential to leak. However, the danger of leaks may be hidden by the initial appearance, and bubbles will form under the surface of the roof. The leaks may go unnoticed for weeks or months.
Specific Knowledge Needed
A flat roofing contractor needs to understand water, and how it can seep into a building around the accessories installed on the roof. This understanding is vital if the roof is to be installed or repaired properly. Heating, ventilation and air conditioning units, vents and utility lines can all provide weak spots where leaky spots can form, especially in commercial buildings. Correct installation is needed to stop leaks forming around roof penetrations such as these.
Old Roofing Should be Removed
When replacing your roof, you may need to completely remove the old roofing structure. A qualified commercial roofing contractor will be able to inspect the underlying structure to ensure that it is still sturdy enough to support a new roof. Without an expert inspection, your new roof could be damaged by old nails, pipe supports, or other debris left over from the old roof.
The Different Roofing Materials
Formerly, most flat roofing contractors used to tar and gravel to seal the roof, using tar paper to create an initial barrier. Once the tar paper was laid, the seams were sealed and the edges were sealed with additional cold tar. Hot tar was then spread across the roof. Alternatively, the tar paper was directly covered with hot tar, using a broom to work the tar into the seams and joins, and into the areas around the roof penetrations. This was in small sections so that the tar did not lose its heat before the end of the section. Gravel was then spread evenly to give the roof strength and resilience. This also gave the workers a place to walk without damaging the new section of the roof.
Nowadays, roofing contractors have other options for roofing such as a plastic membrane. This is rolled onto the roof to provide a strong moisture barrier to protect the roof from the weather. While these are easier to work with, plastic membranes are very light and working with them on breezy days can be difficult. Plastic membranes still need to be sealed at seams, joins, overlaps, and around roof penetrations to guard against potential leaks.