The carpenter may have failed to put all of the crowns up on site framed roofs.
Wavy decking roof.
Thankfully this is something that can be fixed with just a little time and heat.
The problem is not the.
Thankfully these are also the easiest set of issues to remedy.
They have issues for a wide variety of reason including damage from wind storms overloading from ice and snow leaks etc.
Wavy or warped roofs don t happen naturally.
This is a bad move a roofing company should not lay new roofing shingles over shingles that are wavy.
Poor framing practice is one of the more common reasons for roof waviness.
Asphalt shingles are the most likely to be wavy asphalt will curl and warp significantly more than better quality sustainable products.
Even though your roof is on the top of your home there is a foundation to it.
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.
Typically after a few warm summer weeks the shingles will lay flat and you will no longer notice the wavy look.
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.
Asphalt shingles are low quality material and have a low quality look.
The most common causes of a wavy roof actually tend to come when the roof is new.
When some of the crowns are up and some are down then the roof has a wavy look but it is still structurally sound.
Causes of a wavy roof.
The foundation of your roof in comprised of the framing and includes the decking.
Compared to other types of steel roof deck type a has the lowest strength to weight ratio.
A layer of felt paper acts as a base and goes down before the shingles for every installation.
This type of steel roof deck has a 6 pitch and is available in a 22 20 or 18 gauge.
Instead type a steel roof decks are often used in repair and re roof projects.
The decking is the plywood that covers your entire roof and is the foundation for your shingles.
Type a steel roof deck is rarely used for new construction projects.
The felt paper used on the decking was potentially wet or bubbly when laid down.
First layer of shingles were wavy and the roofer laid directly over the existing layer.
There are a few reasons why it occurs but please remember that it is dangerous for you to attempt to diy or self inspect your roof.
Therefore giving them a good look is critical when addressing sagging bowed or wavy roofs.