Building Control Approval - Loft Conversion

iamcornholio

cyclonebri1 wrote: »

Ok of course the work was subject to required approval otherwise why building control?

You lost me!

For the other bit, how much work to be involved in regularisation of unauthorised work will depend on what it is.

Even when building work is done via an application, the inspector only looks at a few things. You may be surprised to learn that for a loft conversion, the only statutory inspections (ie when the inspector must come out) is commencement, then occupation, then completion. That is it, and most people don't realise that.

But with regularisation, the inspector will want to see a few more things - especially inside the floor, and ceiling. He will be looking for structural support and insulation.

If he can see what he needs to without disturbing finishes, or via a few discrete holes then that is fine. But there is the risk of opening up things and causing damage even if everything is built OK.

cyclonebri1

iamcornholio wrote: »

You lost me!

For the other bit, how much work to be involved in regularisation of unauthorised work will depend on what it is.

Even when building work is done via an application, the inspector only looks at a few things. You may be surprised to learn that for a loft conversion, the only statutory inspections (ie when the inspector must come out) is commencement, then occupation, then completion. That is it, and most people don't realise that.

But with regularisation, the inspector will want to see a few more things - especially inside the floor, and ceiling. He will be looking for structural support and insulation.

If he can see what he needs to without disturbing finishes, or via a few discrete holes then that is fine. But there is the risk of opening up things and causing damage even if everything is built OK.

That's the point, the floor, the roof, the structure , ie, the whole entity, they check

iamcornholio

Yes that is the point ... they will check more on a regularisation application than if you just made an application in the first place

beaker141

I did a loft conversion - BC did at least 4 visits, 1 of these was to check insulation thickness in the roof prior to plasterboarding.

I'd suggest a fair thing to check is the depth of the floor, ie the thickness. Dependant on wall spans etc but your not going to get away with anything less than 6inch joist thickness, it ifs more like 4 inch then its probably still ceiling rafters.

Similar with the roof, where the velux window is. I used Celotex/Kingspan and used 110mm in the rafters and then a further 25mm over the top, therefore I'd expect the internal reveal by the velux to be 6 inches.