It is typical for the roof to be in this condition for 30 60 days while other phases of the construction are completed.
Rain on tar paper roof.
Any repairs would be his problem.
Normal delays and the rain you indicated will not affect the structural properties of the panels.
Roofing felt is made of compressed polyester or fiberglass fibers.
It s your roofer s responsibility to try to make it water tight.
Bitumen or asphalt is distilled from petroleum and is what makes roofing felt waterproof.
Over a long and i mean long period of time the sun heat will dry out the.
By carlye jones roofing felt also known as tar paper serves as both an extra layer of protection between the shingles and the plywood and as a temporary moisture barrier until all the shingles.
I wouldn t trust it in the rain but it s not my job.
Certainly it would have been better to have covered the roof with a tarp or roofing felt before it rained.
When shingles are placed on top of rippled tar paper voids are created which act as little greenhouses that collect heat and break down the shingle from the underside.
Traditional roofing felt also called tar paper or underlayment is felt saturated with bitumen also called asphalt.
It sounds like the tarpaper covering this is the old tar paper correct.
Osb like all other wood will expand.
When tar paper gets wet it buckles and ripples.