However the new shingles will keep to the form of the old layer.
How to fix a wavy roof.
If the felt paper was bubbly or wet when it was applied then it will cause the roof to look wavy.
However some areas allow multilayer roofs which can save homeowners the cost of a tear off and debris removal.
A wavy roof is rather alarming and unfortunately there are actually quite a few potential causes.
When it comes to wavy or warped roofs it s best to call in a professional roofing contractor like aabco roofing for a thorough roofing consultation and inspection.
If you can get at the underside of the roof from the attic you can install 2x4 blocking to push the plywood up where it is dipping to help straighten it out.
Typically in this case the problem will resolve itself with just a little time and heat.
Having wet or poorly placed felt paper under your shingles can cause your roof to be wavy.
A good contractor will never just add a layer of shingles over an existing layer of shingles they ll remove your old shingles first.
Hardware details of the roof expander.
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.
Thankfully this is usually corrected with a little time and heat.
Thankfully this is the most common cause and also the easiest to fix.
This is the best case scenario for a wavy roof because typically the paper will end up flattening itself after a few weeks of summer weather.
However that pronounced wave will nearly always signify one big thing.
Your roof is buckling or bulging somewhere or the materials simply aren t lying flat.
A few reasons why your roof is wavy wavy or warped roofs don t happen naturally.
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 your roof is sagging wavy or bowing there are six important things in the attic to check from a structural standpoint.
This type of roof wave is usually only seen after a new installation.
Multilayer roofs it is always better to tear off your old roof and install a new one.
Applying a temporary adhesive will do the trick.