Quote:
Originally Posted by Marke
Guys while patiently waiting for my pier I have decided I may as well keep going and build a ROR obs to keep it cosy  . I am currently in the planning phase and looking at my options to clad. Currently the plan is to clad it first in ply then screw the colour bond cladding over the ply. Are there any drawbacks to this or any thing else I should be adding between the colourbond / ply or the ply / frame ?
Thanks..
Mark |
Hi Marke. I can give some advise from my experience as a Roof/Cladding and gutter installer in the Building and Construction Indusrty. If you fix your cladding directly to the ply ( there lies another problem, get to that in a sec), the condensate/moisture will have a great deal more area to become trapped therefore rusting out your cladding(zincalume/colorbond) sheets a lot quicker. I would recommend sarking as an excellent moisture barrier which has some thermal insulating properties. By placing insulation batts into the framing cavity then sarking over the top of the frame before you fix the cladding make an ideal combo.
Getting back to the fixing problem. When fixing into timber, the fixing needs a minimum of 25mm into the timber for strength and a 10x 25 or (12x 25 type 17 thread would be highly recommended for it thread type) timber tek screw would be advised for the fixing. And if you were to use ply at that thickness, i doubt that it could be flexed enough to form a curve to suit the frame. If you are fixing the cladding into metal top hat/galvanized c-section as the frame, then smaller fixings can be use such as 10x16 metal tek screw or rivets( personally rivets are not a great fixing choice as they rust quicker if they are not stainless and any expansion and contraction in the cladding material can cause them to pop out. Im my opinion it would be better to clad directly to a timber or metal frame, insulate the frame cavity and then sark the outside of the frame. Good cladding material is S-rib corrugated, Panelform and Ribform can be curved well. MiniFlute (miniorb) can be curved too but the price is higher. Either in colorbond or Zincalume and paint yourself.
If you get some plans ( some plans are on a IIS thread i think) i can help with further advise.
I hope this has helped, feel free to ask any more questions
Edit- here is a link for walling profiles
here