Just wondering what the best way would be to render the front of my steel framed garage, I have got OSB3 to attach to the steel purlins, should I board it, then baton it, install render carrier board and render with silicon render or use some sort of steico wood insulation board attached to OSB and render, any help would be greatly appreciated!

Kind regards,

Kevan.

defo go with counter battens over a breather membrane and then carrier board rather than rendering straight onto insulation or osb mate. ventilated cavity behind the boards gives you a proper barrier so any moisture gets vented out and wont rot the timber or warp the osb over time

6 hours ago, MickTheBrick85 said:

defo go with counter battens over a breather membrane and then carrier board rather than rendering straight onto insulation or osb mate. ventilated cavity behind the boards gives you a proper barrier so any moisture gets vented out and wont rot the timber or warp the osb over time

Thank you,

Yes, I’ll do that, should I put any form of insulation between the OSB and carrier board, my shed has insulated cladding so this area would be the only area that would not be insulated, the gap shall be about 35mm between the boards!

Presumably the insulated cladding is designed to make it reasonably comfortable (i.e. not freezing) to work in. If that's the case why would you leave one elevation of 4 uninsulated? If the cladding boards have c70-100mm insulation then why think of only a max 35mm of insulation on one elevation? How's the air-tightness? Will the doors be insulated and well draught-stripped?

If, of course, it's only for storage of vehicles then maybe the insulation matters less?