Mathew Newton Wrote in message:
On Monday, March 18, 2019 at 11:17:13 AM UTC, Mathew Newton wrote:

The manufacturer has confirmed in one of the questions that it sticks to foam face boards too.

*foil* faced boards...


When insulated plasterboards are stuck to interior walls the
manufacturers guidance was - ok fine but put at least two long
"frame fixings" through the top 1/3rd of each 8 ft board to
restrain them in the event of a fire

I would be doing something similar in your situation. Screws into
the lintel sounds good to me plus foam if you like but brace it
well whilst it cures or it will bend the insulation &/ or
plasterboard whether it's "low" expansion or not...

DAMHIKT
--
Jim K


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