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There are a row of leylandi about 5 meters away from one of the corners. We had to dig down and put in 2 meter deep foundations to prevent root invasion they said (5 meters, as if!) but this had nothing to do with heaving and shrinkage of the clay. Surely though if the rain water cannot...

Hi, As you may have read from my previous questions, i'm currently building a 2 story extension. Ground floor garage with bedroom above. We have just got upto damp course and are planning putting the garage floor in next. For obvious reasons I want to put in a solid concrete slab for...

Thanks for your help in this. I can now at least see in my head what needs doing and in what order. Again many thanks Dave

O.k Had another look at it and i guess I can keep my garage floor level just below the airbricks. I guess I was being greedy and trying to get an even transistion between garage floor and drive. I'll have to make do with a small step / incline. But..... Another query if I may be so bold...

Doesn't the garage floor level need to be 100mm below habital floor level only if you have internal access to the garage to prevent spills/fumes passing through the threshold. I won't have internal access to the garage so can't my floor level be higher. The problem I've got is the garage...

Hi I'm currently building an extension on the side of my house. The ground floor is a garage with a bedroom above. My question is this. The existing external house wall has 4 airbricks inserted in it directly below the DPC across its length. I want the garage floor level to be above the...

Hmm don't know about being called a one post wonder :twisted: Just come off night shift and only managed to get back onto my PC Anyway. The beams only have to span a gap of 2.5m. At the front this will be above the garage door. At the back, the side wall steps in from 4m wide to 2.5 m...

Hi, I am in the process of designing and building a 2 story extension on the side of my 3 bedroom detached house. The extension wil be 4m wide x 7.5m long at ground floor (for a garage) and 4m x 6m at first floor level. The 1.5m extending bit on on the ground floor will be stepped in to 2.5m...