Foundations on a 1950's Garage???

ritesh

I have just purchased three garages from my council in Hertfordshire in view of opening them up and converting to a an office gym (planning permission granted). I will be replacing the roof with a warm roof construction and adding a cavity wall and bifold doors.

We checked the foundations of the single skin garage by digging a trial hole and was pleasantly surprised to find that they had been built on proper concrete foundations and also to find that they had used DPC :-)

However, in order to add the cavity wall (which will be tied into existing brick wall) we will need to add proper foundation footings for this as the garage hard stand is only 4 inches thick (as advised by building control and structural engineer).

Hope this helps

cyclonebri1

You are on a loser in my view, to bring that up to current BR spec will almost impossible, maybe your parent did it without consent.

I'm with the knock down and start again sector..

Dig a hole against 1 corner of the garage to expose the foundations and take a peep. Then imagine how much space you will have left after the walls are thickened up to meet spec.

ritesh

cyclonebri1 wrote: »

You are on a loser in my view, to bring that up to current BR spec will almost impossible, maybe your parent did it without consent.

I'm with the knock down and start again sector..

Dig a hole against 1 corner of the garage to expose the foundations and take a peep. Then imagine how much space you will have left after the walls are thickened up to meet spec.

Certainly not impossible at all! You will almost definitely need to insulate and easiest way would be to apply a liquid damp proof membrane over the wall, put in a stud wall with insulation, new roof and a new screed floor with insulation. For insulation I would go with Kingspan/Celeotex

Can you explain why you think it is impossible?

cyclonebri1

ritesh wrote: »

Certainly not impossible at all! You will almost definitely need to insulate and easiest way would be to apply a liquid damp proof membrane over the wall, put in a stud wall with insulation, new roof and a new screed floor with insulation. For insulation I would go with Kingspan/Celeotex

Can you explain why you think it is impossible?

You misquoted me I said "to bring that up to current BR spec will almost impossible, maybe your parent did it without consent."

Ok, take into account the level of insulation now required in the floor slab, the floor will be about 9" below the rest of the house so that needs addressing the amount of insulation required in the walls, and that will include a cavity or insulation to bridge any studding away from the "wet" existing single brick wall., the wall with the door will have to be brought up to the same spec, roof will need ventilation addressing etc etc

As I and others have said, yes it is possible, but most would start again.

My opinion, yours is different,;) end of.

Anyway, it's no good asking here, talk to the building inspector OP