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How critical is it that that a extension is perfectly square? I am in the process of building my own kitchen extension i am about half way up, I started with the corners using a builders square and i am checking that is vertical as i go but thats proving quite hard because some blocks are...

Hi all, is there a joining tape for partial fill cavity wall insulation, if so does anyone know where i can get it? Thanks.

Hi is there away to calculate how many air bricks i should have in a kitchen extension 20ft long 11ft wide with wooden floor? Thanks

do i need to run dpc up the exsisting wall, behind where i have fixed my furfix ties? if so how far up the wall.

Under building regulations can an air brick be fitted under dpc level?

i am building a kitchen extension and have just reached damp course, i now have to put in vent bricks. i am told that these have to sit on top of dpc, the problem i have is that i had to step up dpc so now the new vent brick wont be completely under floor level, i would have to cut out a section...

Hi can someone please tell me how im supposed to fill my cavity up to dpc level, I have been told that it should be a lean mix of contrete sloping towards the outside leaves. Is this correct and what is considered a lean mix? Thanks