Builder hasn't put DPM or insulation on floor of utility room/loo garage conversion

[drabish]

Hi all

We're in the process of having the back half of our garage turned into a utility room and loo. The garage is up against the house but not of the same construction (single skin), and as part of the job we've had a door knocked through into it.

It's become apparent that the builder doesn't intend to put down a damp proof membrane or any floor insulation, so any flooring in this space would go on top of the original garage concrete floor, which has damp patches around some cracks. Some timber involved in the construction is also in contact with this concrete floor.

Does this meet building regulations? I'm a bit confused about what standard non habitable spaces like utility rooms are held to. If it's not up to building regs, could somebody please link me to something that unambiguously says so?

As a follow up question, is there a way to put this right without tearing everything out and starting again?

 

[JP_]

If part of your house you want it damp proof and insulated.
And that is very wet - are you sure just from rain and not a leak?

 

[big-all]

no expert but it all depends on what you ask for
you ask for a utility room with a toilet in a garage then thats what you have
did you state fully insulated and up to bc standard then suspect a much higher quote ??

 

[^woody^]

It's not building regulations compliant, and it should be.

Has an application been submitted, and inspections made?

A builder that does nor fit a DPM in room conversions is not a builder. So what othert things will he decide not to fit? Ventilation, compliant drainage and electrics, wall DPM and insulation?

There are liquid DPM products that are laid on the surface. Likewise for insulation.

 

[JohnD]

Your pics of the wet floor show that there is a source of water. My first guess is a leak under the floor, unless you can see a roof leak or puddles coming through the wall.

Of course you need to find and repair the fault before any new building work. It will be harder and more expensive afterwards.

Covering it up will not repair it.

 

[drabish]

Thanks all.

I've told the builder to stop work and the local council building control are coming round tomorrow