Can you bond EPDM to EPS?

[KevGillan]

Hi there

I'm building a shed/workshop with a gently sloping living roof. I'm imagining the roof build up to be:
- rafters
- 18mm OSB
- 50mm expanded polystyrene
- EDPM liner
etc..

I know there's a water-based adhesive for EDPM so does anyone know if it'll cause any problems for the EPS? Will it stick?

Any thoughts much appreciated.

Cheers
Kev

 

[KevGillan]

I've just spoken to a supplier on this and they say the water-based adhesive needs to go onto a porous surface. AFAIK solvent based adhesives would do nasty things to EPS. So the answer is no?

Any advance on no?

Cheers
Kev

 

[freddiemercurystwin]

50mm eps will not do much anyway, you could go for 90mm plywood backed celotex. Though the sheets are about £50 each I suspect so maybe overkill for a shed.

Or just screw down a suitable roof deck board through the insulation.