Some of the boards have dry rot and others are gapped too far apart not meeting the local building codes per Winnebago County in Illinois.
All of the counties in Illinois & Wisconsin do not allow gaps of 1.5" to be reshingled on dwellings.
A good roofing contractor like My-Pros will always do a decking inspection before a new roof is installed.
Framing nails are used to put the new sheets of decking into place.
After all of the new sheets of decking are installed My-Pros must install new gutter apron flashing.
After all of the edge flashing has been installed My-Pros will start working on the ice/water shield and underlayment before laying down the new roof shingles.
My-Pros will never install a new roof over bad decking. Whether the decking is bad because it's rotting away or it was not installed to code, installing a roof over it could jeopardize the structural integrity of a home.
This customer wanted to leave the old decking boards on the roof to maintain her budget, but we couldn't let that happen. So we explained to her that risking the long term stability of her roof wasn't worth saving a few bucks in the short term. Finally, she agreed to let us give her the sturdy roof decking she deserved.