Why Does My New Roof Looks Wavy

Underlayment is what we call the product placed between the decking and and the shingles.

Why does my new roof looks wavy.

This type of roof wave is usually only seen after a new installation. When heated by the sun the strip will cause the shingles to lay down and bond together. The decking is where the roof is laid. A new roof that is of a heavier material if the original roof was wood shingles a light weight material and it was replaced with concrete tile a heavy material then the roof may sag or be wavy because it was not structurally designed to carry the heavier load weight.

The carpenter may have failed to put all of the crowns up on site framed roofs. If the decking is damaged it can cause the roof to look wavy. Waves not only ruin any aesthetic appeal your house may have but chances are also high that there s damage occurring to the roof which is why your roofing tiles or shingles are beginning to look warped. Poor framing practice is one of the more common reasons for roof waviness.

This is your number one best case scenario and also the most common because the paper should flatten out completely within a few weeks. 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. A new roof will be required after stripping both layers of shingles to achieve a quality flat look. Having wet or poorly placed felt paper under your shingles can cause your roof to be wavy.

Damaged decking could also cause a wavy look to shingles. Causes of a wavy roof. Cracked or damaged rafters or trusses. Shingles not sealing most asphalt shingles have an adhesive strip.

It is not uncommon for a new roof to look a bit wavy until this permanent seal is created. If any of this is found be sure to have a roofer replace any plywood with the required thickness of board that is code for where you live. This is a bad move a roofing company should not lay new roofing shingles over shingles that are wavy. Decking needs to be installed at the proper thickness according to area building codes and if it isn t it will be more prone to damage.

Quality of the.