insulated patio sheets

[Shane083]

I have a patio in my back yard waiting to be put up, it is the sandwich type sheets. Question is, does anyone know what the maximum overhang i can have off the end of the beam. The sheets are 1mtr wide, there are 7, i have 2x 6mtr beams, just wondering if i can overhang 500mm off each end or do i have to hack the beams up to get the 7mtrs?
Cheers Shane

[Nomad]

I am not a builder but thought 500mm or 600mm would be fine. Are they Ritek panels...............have a squiz at this for detailed info or give them a call.................... http://www.ritek.net.au/PDF/Ritek_Roof_TechnicalDetail.pdf
http://www.ritek.net.au/PDF/Ritek_Roof_E2010.pdf

Proud to say I marketed the Wattle Street project.........

[Rumpig]

500mm overhanging the edge of the beam is quite a bit, if it was the end of the sheets overhanging it wouldn't be a problem, but the edge is a bit far IMHO. i wouldn't have it overhanging past the 2nd ridge that you would screw the roof sheet down to the beam with, but you may find by doing that it could void and engineering that comes with not having it overhang the beam. the last 2 i erected i overhung the sheets about 50mm past the end of the beam, but like i said, i wouldn't go past that 2nd ridge for stopping wind upliift of the sheets. the sheets cut easily if you buy the correct cutting blade for the job (you'll likely have to cut one side then flip over and cut the other for depth reasons), though the polystyrene does make a mess in the yard.

[Horizon]

Hi Rumpig
It all comes down to how think your panel is.
You should be able to talk to the manufacture of the panel for info or you may even find some span tables online.
500mm over hand on the gutter ends should be ok if you are not dancing on the roof but check the span table first.

 
Skip

[Shane083]

cheers guys, thats what i was thinking rumpig, 500 is a bit much, i have to keep the overall length 7 mtrs so cutting them is out. i'll give the manufacturer a call later.

[britts]

It all depends on how thick the panels are the thicker the panel the further you can overhang. Check with your manufacturer

[Rumpig]

It all depends on how thick the panels are the thicker the panel the further you can overhang. Check with your manufacturer

he's talking about overhanging the edge of the sheet past the end of the beam, not the end of it. the sheets would be designed to overhang the ends 500mm past the beam no problems, but with wind uplift they need to be tied down, so 500mm is more then i would expect the sheets are designed to overhang the edge of the beam for proper wind tiedown. having installed a couple of these set ups myself i know how little holds them down for tiedown, so i would be highly surprised to hear that 500mm (half the sheet width) overhanging past the end of the beam will be ok. i'm happy to be corrected, but 20 years of building houses for a living tells me that's not a good thing to do, and it's not something i'd do on my own house