Wood under roof shingles?

Question

What is the standard type of wood layed on trusses underneath roof shingles?

What other factors to include in reroofing a house?

Answer 1

They should use 5/8 minimum or preferred 3/4 plywood. This is the best. Some roofing companies try to shave costs with particle board, but I would recommend against it.

Check how many layers of shingles are present now. If there is only one layer, there is no problem laying another layer. It is done on a regular basis. If there are two or more, all these layers should be removed. The easiest way is with a potato fork, or garden fork.

Once the layers are removed, roll out tar paper as the base starting at the edge of the roof and the next layer toward the peak. Shingles go on the same way so the overlay allows water to drain to the edge.

Good luck!

Answer 2

Depends on the region of the country you live in. ie. North or South. Snow load zone or Wind zone on the coastal areas. I can't say for the North, but in the southern regions of the US most builders use 7/16 OSB. Rafters on 16" center or 24" center? Is the wood underneath 1" plank boards or plywood? Were the old shingles wooden shakes or asphalt shingles? Were the trusses engineered trusses or stick built? Depending on the age of the roof, some of the very old shingles had asbestos in them, if that is the case you would probably need an asbestos abatement crew remove them. More than likely though they do not contain asbestos. Other factors that would run your price up is the roof pitch, how cut up the roof is(ie. hips,valleys,open valleys,laced valleys,cut valleys.) Do you need ice dam membrane on the eves? architectural shingles or standard three tab? what type of vents,powered vents,ridge vents,whirlybird kind or low profile? Do the vent pipe boots need replacing? Skylights? Doghouses or Dormers or Chimneys that will need excesive amount of flashing around them? There is a lot more than just figuring shingles.

Answer 3

the best is 3/4 exterior grade plywood check the local building inspection office for the local codes also the contractors desk at the depot ask them also , nails or screw flashing pans in the valleys freeze block on the lower 3 feet the ridge vents new vent pipes for the sewer gas roof felt or tar paper under the roof shingles now buy the 40 to 50 year shingles and have it all delivered to the roof by the home depot guys for free as thats abig order also theres a dumpster parked on one side of the house and cheap tarps all around the house but nailed to the roof edge and dropped into the dumpster see you peel the shingles off witht eh flat potatoe forks you buy two and then use a bar or a hammer to take the nails out and then shovel the refuse tiot the side withe the dumpster it costs half the price of putting on the shingles to remove them and twenty to 30 a sheet to replace the olde wood sheathing on there .. but heres the easy way get a book at the library on roofing from the B&T section and read up and go to the depot with a measurement of the roof and use starter strip and precut caps and estmate all the supplies about 10 percent over measure the sides of the roof lenght by height for each side they can estimate the supplies for you ,,

Answer 4

3/4 inch OSB is the norm. Thats usually all you'll have to worry about. Unless the roof is very old and has leaked for many years.You might run into trouble with yer trusses being rotten, then.

Answer 5

3/4" Plywood is the standard up here in upstate New York.
Then roll out your tarpaper barrier, then shingle it up.

Answer 6

5/8ths or 7/16ths OSB Board!! But Check City Code!!! J

Answer 7

7/16 osb is norm. for most decking. if not that, it should be 1x6. 1x8, or 1x10. look in your attic and see if the decking is in 4'x8' sheets or boards. if it is sheets,(unless you are in heavy snow areas) get 7/16 osb.for bad rafters, you can use 2x6 boards to scab onto bad rafters. there are several factors that may or may not come into play. too many for unexperianced roofer. if you cant get a contractor, e-mail me for my phone # and i'll walk you through it. good luck.

Answer 8

No your suitable risk for a brief restoration may be in case you comprehend the place the leak is. you may desire to purchase a tube of tar and unfold it on your roof the place you think of the leak may be. you may get it in a can like paint or what i like to apply is in a tube like calking.