Common Flat Roof Problems – Family Roofing

Posted on by David Reid

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At Family Roofing, we take great pride in our experience, expertise, quality and customer service. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. Our reputation is based on service, safety and quality, regardless of how large or small the job.

 

 

Common Flat Roof Problems

In general, flat roofs offer plenty of advantages for homes designed with such a capability. Flat roofs are cost effective, easily accessible, and, energy efficient.

However, flat roofs are far from perfect.  In exchange for this architectural style and other benefits, you get a bevy of concerns that wouldn’t be a problem with a traditional shingled roof. To get the most from your flat roof, these are seven common problems to bear in mind:

1. Ponding water

Most flat roofs aren’t truly flat—they have just enough pitch (or slope) for water drainage.  However, there isn’t much margin for error.  If the flat roof is damaged in any way, or if ice is damming on it, water can begin gathering into small ponds and lead to more serious problems, including leaks inside the house, moss and algae growth, and additional damage to the roofing system.

2. Debris

The lack of a slope allows leaves, branches, and other debris to collect more easily on a flat roof and block drainage.  Moreover, a big uncleared pile of leaves holds in moisture that can freeze, thaw, and refreeze throughout the winter.  This cycle will wreak havoc on the roof underneath.

3. Alligatoring

Alligatoring refers to a flat roof that has begun to crack and bubble, resembling the skin of an alligator.  Usually, sun exposure over time is the cause of this problem.  If left untreated, an alligatored flat roof can lead to additional cracks, leaks inside the home, and a complete failure of the roofing system.

4. Buckling

Houses settle and shift over time.  As a result, so does the roofing membrane between a house and the roofing material.  Since a flat roof’s membrane is one continuous sheet, this shifting can cause it to buckle.  A poorly installed flat roof can also contribute to buckling, which can also lead to greater problems, and possibly a roof replacement sooner rather than later.

5. Wind

Roofs must be able to withstand the elements, especially wind.  If a shingle or two is blown off a conventional roof, though this is not ideal, the rest of the shingles are designed to hold in all but the windiest conditions.  Since flat roofs are one sheet of material, a little wind damage can turn into a lot of wind damage with just a few additional gusts.  The whole roof can fail and necessitate immediate replacement.

6. Leaks

Ponding water, alligatoring, buckling, and the natural elements can all contribute to a leaking flat roof.  However, leaks can still develop without these issues.  For example, damaged flashing can cause leaks as easily on a flat roof as on a sloped roof.  Poor installation, substandard materials, or simple age can also factor into flat roof leaks.

Extending the life of the flat roof only requires the homeowner’s extra vigilance and a commitment to scheduling regular maintenance.