P700 puckboard for roof

[dieselmax]

hi guys i need a little help here i'm going to build a roof for my p700-4 soon and will be using puckboard (hdpe) but i'm not sure if 1/8 will be ridgid enough or will i need 1/4" thick. hoping someone with knowledge in this product can chime in. tia

 

[Gator]

I've used a lot of HDPE and UHMW. Enough to say that 1/8" will have a big sag in the middle. If you don't add a support under it almost any thickness is going to sag (especial with thermal expansion).

My advice (worth less than a cup of coffee)
1. use 1/4" or thicker
2. add something across the middle for support
3. Secure it near the front but let the back slide by slotting the holes or oversize the holes and leaving the bolts loose.

 

[dieselmax]

Thanks for the info Gator i will buy a couple sheets of 1/4" good reason for a day trip to the U.S.A 1/2 price compared to canada

 

[dieselmax]

i kmow its been a while but thought i'd share a quick pic of my roof