Roof Question

[rainjer]

Does it matter which way you put you 1 X 2 roff spars?



I was planning on laying them down & using 3/4" insulation. I have noticed most people building are standing them up.

[madjack]

...for strength you need to stand them up on edge...your firstpic..............................madjack

[Gage]

Well, my roof is built like your lower picture. And my roof is strong enough to hold someone over 200 lbs on it with no problem. And my cross framing is about 14" apart (spacing). I know this because it has happened. The roof not being flat adds extra strength.

So does that confuse you. One for each way.

Have a good day.

[len19070]

Either way will work, but with space at a premium I would go with putting them on the flat. Once that plywood gets a curve into it , it takes on new characteristics. Becoming much stronger.

Happy Trails

Len

[toypusher]

You may want to consider how much insulation you will get with each system. The roof gets most of the sun. I would and did opt to put them upright and add the extra insulation.

[madjack]

for us, the insulation factor was as much a concern as strength...we used bendy ply both in and out and have a large flat section of roof so we used some 5/4x7/4 red oak set 9in centers...the 9in centers was because the bendy has a tendency to wanna sag
madjack

[rainjer]

I might use this for my roof spars. They are aluminum. Strong & light weight & the price is right. Free.



I would install with the wide side to the inside of the trailer and pop rivit the paneling to the spar.

[DestinDave]

Rainjer... those look stronger than wood and probably lighter overall too, but, how would you attach them to the sidewalls?

[mikeschn]

Rainjer... those look stronger than wood and probably lighter overall too, but, how would you attach them to the sidewalls?

I would probably cut an inch off the end, except for the bottom part. Then I would bend it over, making a tab...

Another option is to glue a short piece of wood into the channel, and then predrill it before screwing into it.

Mike...

[rainjer]

couple ideas:



They are very light weight. They will also give me a place to run wires.

[mikeschn]

rainjer,

While your ideas will work... KISS is better... I still like the "glue a short piece of wood into the ends of the channel, and predrill it before putting a screw in...

But let us know how you do it... and Please... keep Madjack happy... you know... dem pics!

Mike...

[Arne]

Mike that is what I would do.. a wood stub expoxied and screwed at each end.... The roof panels would overlap the walls and should do the trick.. routing the wall would be a bit stronger, but would be more complicated.