What causes a Flat Roof and how to solve it?

Flat roofs are a popular roofing option for many households, as they provide a low cost and low maintenance roofing option. Unfortunately, flat roofs can be prone to damage, ranging from leaks to sagging. If you are in need of flat roof repair, it is important to know what to look for and how to best address the problem.

It protects the interior of a building or structure from heat, water, snow, and other weather elements. Flat roofs have a pitch of approximately ten degrees or less.

Flat Roof Causes


One of the most common issues with flat roofs is a leak. Leaks can be caused by a number of factors, including the age of the roof, poor installation, and poor maintenance.

If you notice any water damage or water stains on the ceiling, it may be time to take a closer look. In some cases, a simple patch or sealant may be enough to fix the problem. However, if the damage is more extensive, you can replace the entire flat roof.


Another common issue with flat roofs is sagging. Sagging can be caused by a number of factors, such as poor installation, poor maintenance, or extreme weather conditions. If the sagging is severe, you may need to replace the entire flat roof. If the sagging is minor, you may be able to repair it with a few simple steps.

First, inspect the roof for any weak spots or wear and tear. If you need to, reinforce these areas with additional shingles or plywood. Finally, check for any loose nails or other damage and repair or replace these as needed.

Extreme Weather

Finally, flat roofs may also become cracked or weakened over time due to extreme weather conditions. If you notice any cracks or weaknesses, you may need to replace the entire flat roof. However, if the crack or weakness is small, you can usually repair it with a patch or sealant.

Flat Roof Repairing Process

Figuring Out Roof Damage

• Measure the distance between the two walls closest to the leak.
• Analyze the roof's slope above the measurement area.
• Roof punctures, tears, or cracks should be identified.
• Make sure the roof seams are free of cracks and holes.
• Clean the damaged area by sweeping away water and debris.
• You should dry any areas you intend to treat before treating them.

Small Cracks Sealing Process

• Utility knives can be used to slice open blistered spots.
• Make sure the membrane rests flat around the damaged area.
• By troweling roofing cement on top, create a layer of protection.
• The cement should be covered with a piece of fiberglass mesh.
• Make sure there is a thick layer of cement covering the mesh.
• Prevent sun damage by covering the cement with gravel.


• You can easily patch up your roof with a roof repair kit.
• Utility knives can be used to cut out the damaged area.
• Roofing cement can be used to fill the hole.
• Cover the cement with a patch.
• A layer of roofing cement should be applied to the damaged area.
• A patch should be cut to fit over the cement.
• The new patch should be applied over the original patch.
• A final layer of cement should be applied to the patch.

Wrapping it Up

Flat roof repair is an important part of keeping your roof in good condition. If you suspect that your flat roof is in need of repair, it is important to take action as soon as possible.

To learn more, watch the following video tutorial.

Video Source: Flat Roof Doctor

Whether you are dealing with a leak, sagging, or cracks, addressing the problem quickly can help prevent further damage and ensure that your roof remains in good condition for years to come.

What causes a Flat Roof and how to solve it?