Thanks for the reply Buddy - the problem is I'll have no way of knowing if it's installed correctly. I want to be a good neighbour but I really don't want my wall insulation compromised. The insulation in these houses is poor as it is especially in the north facing front wall as it is insulated with wool whereas the rear south facing wall of these houses are insulated with the white polyboard - why the original builder didn't use the white polyboard on the north facing front of the houses I don't know - must have been a good reason.you have noting to worry about if it's installed correctly
Once there is adequate ventilation, you shouldn't have the mould and condensation. There is a glue that is pumped in with the beads, which means that they won't be pouring out of every hole.I'm nervous about this due to what I read on previous thread on AAM (mould, condensation, beads coming out of every oriface etc..)
Neighbour on other side is the end house and is set back about 7 feet from my house (still joining but her house is less deep and wider).Also, as you are in a terraced house, what about the neighbour on the other side of you - how is the bead and wool insulation going to be managed at that junction?
Apologies, I made an error in the post. The white polystyrene board is in the north facing front wall and is about 30mm thick (the wool is in the rear south facing wall). Thanks for asking about the thickness because that made me check the air vent and so I realized my error. When I put my hand in it appears that the white board doesn't touch either the inner block wall or the outer brick wall (bigger gap to the outer brick wall). I assume now that the polystyrene board cannot be removed prior to filling the cavity with beads and hence the beads will be pumped into the gap between the white polystyrene board and the outer brick wall.Do you know the thickness of the white polyboard?
In your case the cavity doesn't appear to be suitable as the polystyrene board is in the middle of the cavity
It should have been installed tight against inner leaf.
Bead install needs a minimum gap of 40mm to pump correctly
I spoke to one of the SEAI 's technical team and told them that the gap between the outer brick wall and the polyboard was 30mm in the only place I could check it i.e. the air vents. They confirmed that a 40mm gap is the minimum acceptable and they do not support the case for beading in this case as it could be problematic. I'll inform my neighbour of this and if he still decides to go ahead, then I have a decision to make as to whether I agree to the "Brush" being inserted or objecting to the him going ahead with the job at all.I wouldn't be confident the board would be pushed back by pressure of the bead as the board is normally wedged into a wall tie, and pressure of bead would not be enough to push it back.
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