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79 Posts
Hi,
I am in need to replace my roof soon. There are many problems, and the roof is probably more than 20 years old. Too many shingles are curling up/wearing out and the whole roof is just wavy. Just this winter, I had to climb up there (it's not too bad, about a 6 to 7/12 pitch) and patch a hole, which I have no clue where it came from (maybe the neighbor's tree). I used some metal flashing and roofing tar under the shingles since the plank was totally gone. I doubt this repair job will last long. I have patched a lot of other things on this roof as well, including the electric mast, and tarring many shingles back down. The shingles on the back utility room is also disintegrating. The gutters are in rough shape, so I'm planning to install the gutters after the roof goes up.
Now onto the questions. I've found one company who I saw a lot of people used around town. I thought they may be ok, better than the guy who gave me a 1-hour powerpoint presentation and quoted me a ridiculous price. However, they said they are going to use 1/2" OSB on top of the current wood planks and patch any bad spots with new planks. First of all, I made this a point to him and he did not care, nor was he willing to quote me a price for plywood instead. And he said up front that removing the planks will be a lot more labor/cost. I told him I heard that OSB should not be used around moisture, and from experience OSB just soaks up water like a sponge. He told me the roof should not get wet at all from the felt paper protecting it. I said, yeah, it shouldn't, but it WILL as we all know...
In the end he quoted me a price where I have to go buy ~60 boards of plywood and deliver it to the job site, and he'll put them up. I'm pretty sure OSB is bad for roofing, has anyone heard otherwise? I also asked him that day whether or not they are using Exterior-grade OSB, and he said no. Of course this guy gets an A on Angie's List regardless. He did quote me a lot lower than the first guy though.
Oh and another question, to remove the waviness from my roof, am I correct in assuming that removing all the old material is necessary, and using 5/8" plywood with H clips is the best way? Or am I going overboard, and using 1/2" is fine? I'm not an expert which is why I am asking you guys! Oh and .. is this possibly a DIY project with my dad? He's saying "if we go up there we can get it done in 2 days!" :vs_worry:
Thanks,
Mike
I am in need to replace my roof soon. There are many problems, and the roof is probably more than 20 years old. Too many shingles are curling up/wearing out and the whole roof is just wavy. Just this winter, I had to climb up there (it's not too bad, about a 6 to 7/12 pitch) and patch a hole, which I have no clue where it came from (maybe the neighbor's tree). I used some metal flashing and roofing tar under the shingles since the plank was totally gone. I doubt this repair job will last long. I have patched a lot of other things on this roof as well, including the electric mast, and tarring many shingles back down. The shingles on the back utility room is also disintegrating. The gutters are in rough shape, so I'm planning to install the gutters after the roof goes up.
Now onto the questions. I've found one company who I saw a lot of people used around town. I thought they may be ok, better than the guy who gave me a 1-hour powerpoint presentation and quoted me a ridiculous price. However, they said they are going to use 1/2" OSB on top of the current wood planks and patch any bad spots with new planks. First of all, I made this a point to him and he did not care, nor was he willing to quote me a price for plywood instead. And he said up front that removing the planks will be a lot more labor/cost. I told him I heard that OSB should not be used around moisture, and from experience OSB just soaks up water like a sponge. He told me the roof should not get wet at all from the felt paper protecting it. I said, yeah, it shouldn't, but it WILL as we all know...
In the end he quoted me a price where I have to go buy ~60 boards of plywood and deliver it to the job site, and he'll put them up. I'm pretty sure OSB is bad for roofing, has anyone heard otherwise? I also asked him that day whether or not they are using Exterior-grade OSB, and he said no. Of course this guy gets an A on Angie's List regardless. He did quote me a lot lower than the first guy though.
Oh and another question, to remove the waviness from my roof, am I correct in assuming that removing all the old material is necessary, and using 5/8" plywood with H clips is the best way? Or am I going overboard, and using 1/2" is fine? I'm not an expert which is why I am asking you guys! Oh and .. is this possibly a DIY project with my dad? He's saying "if we go up there we can get it done in 2 days!" :vs_worry:
Thanks,
Mike