Even when properly installed and sealed, if the water is left to sit on a roof, it will find a way inside.
Common flat roof problems.
4 improper drains and screens.
When the materials that make up a flat roof begin to crack, bubble, or split, it’s called “alligatoring” since it begins to look like the skin of an alligator.
From cracked flashing (those thin, weatherproofed pieces of metal that are designed to keep water out) to broken shingles, tiles or slate there are nearly as many causes as there are roofs.
The most common problems are that rainwater outlets become blocked with leaves and other windblown debris.
Many flat roofs are not 100% flat.
Debris can cause major problems if it lingers on a flat roof throughout the winter because it can hold moisture.
With an aging, shifting and settling flat roof, the roof will not be completely level.
5 lack of wind protection.
These imperfections are common problems on flat roofs.
As with any exterior products , the sun is the most efficient destroyer of flat roofing materials unless it is a seamless and reflective coating.
3 seams in any material.
Also known as blistering, alligatoring is a common problem with flat roofs in which trapped moisture is allowed to build up beneath the surface, causing the membrane of the roof to detach from the layer beneath.
However, hefty rain, snow, or sleet can damage your roof or cause it to shift.
Common flat roof problems are:
Objects that penetrate the roofing surface, such as vent pipes and hvac ducts, also have flashing at the base.
Water that is left to pool or stand on a flat roof can cause problems as the accumulation of water or ice dam effects can lead to leaks throughout a building or house.
Instead, rainwater collects on the rooftop.
Another common problem with flat roofs is leaks.