It s also important to confirm that the ledger is bolted tightly against the house along its entire length.
Uneven roof and deck warping.
Initially bad ventilation warped this roof deck.
The thick duralife fascia boards should then be installed below the decking boards and fastened to the outer rim joists using 8 x 2 stainless steel capped.
One can see clearly lots of ripples bumps all over the roof but one section is much worse than the rest.
In some places the fascia boards warped to such an extent that the screws sheared off leaving a gap of over an inch.
Otherwise wrinkling of the materials can create a warping effect.
Occasionally the buckling is caused by poor workmanship wrong materials or possibly by a problem with the structure itself.
If a roofer installs a roof deck without ensuring the rafters are even warping often occurs.
Roof shingles are not lying flat.
They give the roof a finished look while forming a protective seal.
The plywood might also become warped itself if it becomes wet which could happen in the case of a roof leak.
While a wavy roof is aesthetically unpleasing does it affect the performance of the roof.
Underlayment must be dry and flat for roofing to stay in place.
An improperly installed roof deck or the sheets of plywood that are underneath your roofing material could result in the plywood shifting.
Poor spacing between roof deck panels can also lead to the same problem.
Ripples or waves on the roof surface are a sure sign that the shingles or decking has probably buckled.
The shingles on your roof serve a dual purpose.
Simply pry up one or two rows of decking install the flashing and replace the deck boards.
It immediately detracts from the appeal and look of a home.
A wavy roof is an unsightly thing.
Lumpy bumpy or curling shingles that do not.
Those ripples bumps can be pressed down easily which suggests that there is space between the shingle and decking i e shingles are not properly supported by the decking where there are ripples.
To determine if a wavy roof is more than just an eye sore you must determine the reason for the wave.
If you see even the slightest warping or wave to your shingles contact us as soon as possible.
Why this should cause mold warping and uneven color i don t know.
Deck boards including perimeter boards used for picture framing should be installed so they extend past the outer rim joists by less than 2 lengthwise and 1 width wise.
Frost on the plywood.
Wood is soaked and leaking.
Roofs buckle because either the roofing underlayment has wrinkled or the wood deck itself has shifted for some reason.
Investigating a warped and wavy roof.