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12 votes
Accepted

Is it normal to see light between the plywood on a roof deck?

There is actually a requirement that the plywood sheets are not tight against each other. The normal spacing is about 1/8 inch or the thickness of a nickel. Some installers use Plywood clips to keep ...
RMDman's user avatar
  • 30.9k
4 votes

1.5" galvanized vent pipe as a fall arresting anchor

If you want roof anchors for personnel fall safety, buy and install roof anchors that are designed for the exact job. They are made, they are common, and they can be permanently installed for use when ...
Ecnerwal's user avatar
  • 218k
2 votes

Replace Playground roof

Any roofing material can work. The problem with a question like this is there are all sorts of factors that come into play: aesthetics, price, durability, and ease of installation being the biggest ...
UnhandledExcepSean's user avatar
2 votes

Too Much Gap Between Roof Decking?

There are supposed to be expansion gaps between sheets of plywood on a roof. I can't tell from these pictures whether those are the right size (3mm or 1/8 inch) or too large, but the sheets should NOT ...
Ecnerwal's user avatar
  • 218k
2 votes

What to do with nail holes from removed zinc strips?

Don't add nails. That would add complexity, which is counter to a good seal. Just force roofing sealant* into the holes and leave a dab on top, then press the shingles down. It's best to do this kind ...
isherwood's user avatar
  • 139k
1 vote

How do I vent shingle roof with no attic with valley thats gets ice dams?

How do I vent shingle roof with no attic with valley thats gets ice dams? Venting and ice dams are mostly unrelated issues. Ice dams form because the eaves on your roof are over less-heated (outside) ...
Matt Simerson's user avatar
1 vote

How do I vent shingle roof with no attic with valley thats gets ice dams?

Tell your roofer to install Water shield and ice dam underlayment under the shingles. At least in the valleys and 6 feet up the roof. ( Preferred the whole roof.) Then if you do get an ice dam the ...
RMDman's user avatar
  • 30.9k
1 vote

Rework Roof Design to add bedrooms

It appears you have a pyramid style roof. It also seems like it ties into the lower part of the house. I also have done upwards and outwards add-ons. You need a good residential home architect. ...
DMoore's user avatar
  • 49k

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