Roof Appears Wavy

If your roof is sagging wavy or bowing there are six important things in the attic to check from a structural standpoint.

Roof appears wavy.

Although we generally think of our roofs as one of the major components of our home that keeps us dry we also need to think of them as a key structural component. If you notice the wavy look it could be due to a number of reasons. Purchase only high quality roof shingles from a good source. Causes of wavy roofs roofs may become wavy over time or they may have been built that way to start with.

While a wavy roof is aesthetically unpleasing does it affect the performance of the roof. Despite the roof being sized and installed in accordance with the building code waviness between framing members may occur. Thankfully this is something that can be fixed with just a little time and heat. Typically after a few warm summer weeks the shingles will lay flat and you will no longer notice the wavy look.

After installation your shingles should be aligned in straight rows without any wavy appearance. 10 25 2009 02 35 pm 4. As always contact a professional for a thorough inspection and roofing consultation. Defective shingles there is always the possibility that the cause of a wavy roof is the result of a manufacturer defect.

I often see sagging roof rafters that have been overspanned and sometimes plywood roof decking that has delaminated can result in a wavy appearance. If the material was damp if the day was humid or if the paper bubbled up a bit then it can produce a wavy appearance on your new roof. On our 06 camelot i noticed the fiberglass roof looked like the ocean. You can check for damaged shingles or any other damaged areas of the roof including a wavy roof.

Here is what you need to know about the causes of a wavy roof. This will not affect the performance of the roof. When i say warms up i don t mean real hot just in the mid to upper 70 s although direct sunlight. Most that become wavy do so over time.

This is your number one best case scenario and also the most common because the paper should flatten out completely within a few weeks. The waviness generally does not cause a roof to leak but it may be architecturally unsightly or occasionally can indicate a problem. The felt paper used on the decking was potentially wet or bubbly when laid down. Frost patterns on a roof can give the appearance of waviness without the condition existing e g.

Cheap shingles are often thin and easily torn and they don t often adhere to rigorous quality controls and inspections. To determine if a wavy roof is more than just an eye sore you must determine the reason for the wave. Causes of a wavy roof. If the roof had more than one layer of shingles that could be a cause.

Frost outline on sheathing joints and over roof framing members.