Insulated plasterboard fixings

[carlos21]

Looking for thermally broken fixings that stop cold bridging,

I used some hammer in nails that went into a large rawl plug and had a plastic cap on the nail, but i wasnt that impressed with the thermal break to be honest.

Anyone use some they were happy with?

 Thanks carl

[Gus Potter]

Have a look here, they may have something that floats your boat. 

 

https://www.ejot.co.uk/

 

If not on their website use that old thing called the telephone and give them a call. 

[saveasteading]

10 hours ago, carlos21 said:

but i wasnt that impressed with the thermal break 

What is the context? What is being connected? Materials, and why you are concerned?

[carlos21]

Sorry for slow reply

Iam fixing insulated plasterboard to stonewalls mostly and some on concrete blocks.

The fixings i have used in the past created tiny black spots from condensation from cold bridging.

[Gus Potter]

Fixing insulated platerboard directly to stone walls is likely to give you a pile of problems further down the line. Fixing to concrete blocks has similar risks.

 

Best thing you can do it to post more info. Just draw a sketch on A4 paper, photograph it and post. You won't get tested on your drawing skills.

[pudding]

Can you just use Spray foam adhesive?

[Super_Paulie]

I used foam onto my concrete blocks but regs said I needed to use mechanical fixings as well. If you're not getting it checked I'd just use the foam personally.

[ADLIan]

Please do not omit the fixing(s) - it's only one or 2 per board (check MIs). In a fire any plastic insulation attached to the plasterboard will melt or soften and the plasterboard may fall off the wall. This exposes more fuel to a fire (combustible insulation) and blocks possible escape routes. Additionally it could be a major hazard for fire fighters if they have to enter the building if people reported in there.

[carlos21]

Thanks for the replies, sorry slow to get back, yes i will and have used mechanical fixings in conjunction with spray foam, i find the foam great on uneven stone.

In terms of whether its a good idea to put insulated pb onto stone, im still not sure and have spent a long time thinking about it, but i wasnt sure about the whole lime render thing either.

I wont be doing large areas mostly just window reveals.

On a side note does dot n dabed normal plasterboard need mechical fixings too.?