When someone walks on the roof the panels deform and have no internal strength to return to their old level which is why the roof looks wavy after the roofers finished.
My new roof is wavy.
This type of roof wave is usually only seen after a new installation.
This is normally not a problem unless you experience windy conditions that can catch the shingles.
It could be any number of reasons discussed above but it doesn t look overly wavy imo.
Good call on the pipe river.
This is a very unfortunate issue for everyone involved.
Poor framing practice is one of the more common reasons for roof waviness.
When some of the crowns are up and some are down then the roof has a wavy look but it is still structurally sound.
The following are some of the more common causes for a wavy roof.
Damaged decking could also cause a wavy look to shingles.
When referring to asphalt shingles felt paper is what is typically used in this application.
This is a bad move a roofing company should not lay new roofing shingles over shingles that are wavy.
A layer of felt paper acts as a base and goes down before the shingles for every installation.
Having wet or poorly placed felt paper under your shingles can cause your roof to be wavy.
Underlayment is what we call the product placed between the decking and and the shingles.
It is not uncommon for a new roof to look a bit wavy until this permanent seal is created.
The problem is you had a contractor do it and not a roofer.
If the felt paper was bubbly or wet when it was applied then it will cause the roof to look wavy.
What happens here is that a contractor laid out your new shingles directly on top of your old ones creating an unnatural waviness that just isn t going to go away.
Why does this roof look wavey.
The problem is not the.
If you have recently had a roof installed and it has started to look wavy there are the possibilities.
There was an issue with the felt paper before the shingles of a roof are put down felt paper is laid down first.
Applying a temporary adhesive will do the trick.
Multilayer roofs it is always better to tear off your old roof and install a new one.
A new roof will be required after stripping both layers of shingles to achieve a quality flat look.
Cracked or damaged rafters or trusses.
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.
The carpenter may have failed to put all of the crowns up on site framed roofs.
Inspect the plywood from the attic and look for cracks sagging or rotting.