Roof Appears Wavy

The felt paper used on the decking was potentially wet or bubbly when laid down.

Roof appears wavy. Despite the roof being sized and installed in accordance with the building code waviness between framing members may occur. If you have recently had a roof installed and it has started to look wavy there are the possibilities. This will not affect the performance of the roof. Shingles not sealing most asphalt shingles have an adhesive strip.

Frost patterns on a roof can give the appearance of waviness without the condition existing e g. A roof with a wavy look to it can be caused by a number of reasons but the problem may be short lived. It is not uncommon for a new roof to look a bit wavy until this permanent seal is created. 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.

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 is normally not a problem unless you experience windy conditions that can catch the shingles. When heated by the sun the strip will cause the shingles to lay down and bond together.

The carpenter may have failed to put all of the crowns up on site framed roofs. A layer of felt paper acts as a base and goes down before the shingles for every installation. When some of the crowns are up and some are down then the roof has a wavy look but it is still structurally sound. Underlayment is what we call the product placed between the decking and and the shingles.

Having wet or poorly placed felt paper under your shingles can cause your roof to be wavy. Frost outline on sheathing joints and over roof framing members.