Thanks Guys,
I had considered that but I was worried about the thickness, the wall is
about 18cm thick whereas the mortar seal around the frame would only be
3-4cm - it only needs to resist for 30 minutes (the spec of the door)
and it should be ok but I thought I would ask the oracle here first. ;-)
IanW
On 22/01/2010 13:47, Rick Beckrich wrote:
> I would agree with Jez. Might suggest stuffing some fibreglass insulation
> into the gap before applying the mortar. (To prevent the 'mud' from spilling
> out the backside.)
>
> Rick
>
>> My 2 swiss cents
>>
>> If regular mortar is considered good enough between the bricks/blocks then
>> it ought to be good enough in the gaps around the frame.
>>
>>
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