New Shingle Roof Looks Wavy

Rafters if too far apart may result in the plywood sagging or if the plywood is too thin for the weight it may sag.

New shingle roof looks wavy.

When heated by the sun the strip will cause the shingles to lay down and bond together. Causes of a wavy roof. Quality of the roofing work in general can also cause a roof to look wavy. Not a roofer so not sure what they are called after a couple of sunny days hey flattened back down.

Could someone give me any advice before i pay several thousand dollors. 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. When some of the crowns are up and some are down then the roof has a wavy look but it is still structurally sound. I m fishy about the explaination.

Although roofing isn t necessarily complex it is extremely precise. This is why working with a trusted professional is so important. A bad measurement improperly sized shingle or low quality roof can simply result in an uneven and wavy appearance which essentially means you got a raw deal. Sometimes you just get a bad apple.

This is normally not a problem unless you experience windy conditions that can catch the shingles. These buckling shingles are usually noticed in a straight line pattern or across the roof in ripples that look like they have air bubbles stuck under them. Shingles not sealing most asphalt shingles have an adhesive strip. Applying a temporary adhesive will do the trick.

Inspect the plywood from the attic and look for cracks sagging or rotting. Damaged decking could also cause a wavy look to shingles. I just have my old roof removed and new roof installed by a contractor but the new roof looks wavy. New shingles that are not precisely aligned can also cause a roof to look wavy.

I will hold judgement. Having wet or poorly placed felt paper under your shingles can cause your roof to be wavy. Thankfully this is usually corrected with a little time and heat. The contractor told me it s because it s winter now and the shingles are shrunk and they will flat when temperature gets quite warm.

Before new shingles seal down they can look a little lumpy and uneven but once the roof gets hot. Would like to see a couple of closer up pics of the vent stack. This type of roof wave is usually only seen after a new installation. I have seen roofs look a little wavy from the hooks the roofers slide under the shingles to support the boards to help them stop from sliding off the roof.

A new roof will be required after stripping both layers of shingles to achieve a quality flat look. When the shingles heat up they become flexible and the adhesive bonds the shingles in place. One wrong measurement improperly cut shingle or low quality materials can simply result in an uneven appearance. Roofing isn t complex really but it is exceptionally precise.