Roof Appears Wavy

Frost outline on sheathing joints and over roof framing members.

Roof appears wavy.

If the material was damp if the day was humid or the paper bubbled a bit if could produce a wavy appearance on your new roof. This will not affect the performance of the roof. Causes of a wavy roof. Let s take a look at some of the typical causes of a wavy shingles especially after a new roof is installed.

This type of roof wave is usually only seen after a new installation. Frost patterns on a roof can give the appearance of waviness without the condition existing e g. It is not uncommon for a new roof to look a bit wavy until this permanent seal is created. This is normally not a problem unless you experience windy conditions that can catch the shingles.

If you have recently had a roof installed and it has started to look wavy there are the possibilities. Despite the roof being sized and installed in accordance with the building code waviness between framing members may occur. Underlayment is what we call the product placed between the decking and and the shingles. When heated by the sun the strip will cause the shingles to lay down and bond together.

The felt paper used on the decking was potentially wet or bubbly when laid down. Shingles not sealing most asphalt shingles have an adhesive strip. When referring to asphalt shingles felt paper is what is typically used in this application. When some of the crowns are up and some are down then the roof has a wavy look but it is still structurally sound.

Poor framing practice is one of the more common reasons for roof waviness. Having wet or poorly placed felt paper under your shingles can cause your roof to be wavy.