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3 votes
Accepted

Roofing plywood - proper staggering / cutting of sheets

Per https://www.nachi.org/inspect-roof-sheathing.htm Plywood panels should be laid with the face grain perpendicular to the rafter boards. The panels should be installed over two or more spans, with ...
  • 15.2k
2 votes
Accepted

Why is my roof leaking when it isn't raining?

We had a bunch of builders take a look and the consensus was that the timbers in the roof structure were "sweating" in the heat. This was apparently caused by a combination of the outer ...
2 votes

Roof truss downward load

I am in the States, so I needed to covert kilos to pounds. 200 pounds of bikes hanging from 5-2X4" truss chord bottoms, approx. 10 ft (3 meters) to the truss plate, breaks down to 40 lbs to each ...
  • 32.2k
2 votes

Roof truss downward load

Attach "Z" bars to the block wall on the left and the block pillar on the right. Then span a 2x8 or 2x6 beam across. Hang the bike rack from the beam and the weight is supported by the block ...
  • 5,460
1 vote

Pressure treated plywood sold as exterior-rated but stamped as exposure 1 - safe to use for outdoor deck/roof?

The link is to pt for ground contact plywood. If that is what you purchased and received then it is suitable for a treehouse. I would not rely on it for a roof without some secondary covering such as ...
  • 5,460

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