There are some people that will certainly tell you that this is largely a cosmetic issue and in at the very least some cases it can easily be.
Ripples on roof.
Rippled shingles can quickly over time lead to a leaking roof.
Occasionally the buckling is caused by poor workmanship wrong materials or possibly by a problem with the structure itself.
This will shorten roof s life.
First of all all agree that theinstallation of a roof with ripples bumps is defective.
If the shingles are lifted too much preventing.
Ripples can also expose the wooden portions of the roof to moisture that could lead to deterioration as well as rotting.
If the ripples had of been in a straight vertical line i would have guessed something with the sheathing installation but these ripples are on an angle.
Roofs buckle because either the roofing underlayment has wrinkled or the wood deck itself has shifted for some reason.
Ripples or waves on the roof surface are a sure sign that the shingles or decking has probably buckled.
The attic looked good in most respects although the different types of trusses they used for a simple hip roof was unusual.
Moisture is the number one detriment to your roof.
Depending on exactly how serious these ridges and ripples are.
Any flat roof i ve inspected with any type of material if there are ridges ripples they are deteriorated much more than the rest of the material so if i see ripples on a flat roof generally it is not cost effective to repair them i simply tell my client to expect those areas to fail at a faster rate than the rest of the material and replacement will need to done at a premature age of the material.
The entire roof work was done within one hot day.
Understanding the core of the problem and how you can fix the issue is important.