Internal stud wall resting on screed or concrete slab?

Jim1000

hello Folks,

I have to erect an internal stud wall and am almost ready to screed. Just wondering whats the norm. I will have a few inches insulation and then 3 inch screed. Can I build the stud wall on this? Or should it be built before insulating and screeding and be resting on the concrete slab, which is not really concrete and very old and uneven by the way.

Thanks for your time

Jim

Kevin McCloud

Build the stud on the finished screed, fix it to the screed appropriately.

Calahonda52

Have u a dpc layer?

or as discussed below DPM My bad.
Must remembrane that.

Jim1000

yes

Calahonda52

Good, so just make sure not to puncture it when if drill fixing the stud wall, easy to drill into screed and then drill breaks through and u are down through insulation and dpm in a flash

Jim1000

wpw cal , you are a man of foresight. I would have forgotten that. Thing is, as its a flowing screed the screeders have stipulated I lay the dpc over the insulation. This means it will be only 60mm below the surface. The fixers need to be longer than this so whats my option?

Jim1000

wow calahonda , you are a man of foresight. I would have forgotten that. Thing is, as its a flowing screed the screeders have stipulated I lay the dpc over the insulation. This means it will be only 60mm below the surface. The fixers need to be longer than this so whats my option?

Kevin McCloud

Laying dpc on top of insulation that is a new one, are the screeders from mens shed or the pub?

johneym

the op has said its flow screed. as this is practically a liquid a layer of plastic or dpc 1200 guage is required over the insulation to stop it flowing all over the place.

Jim1000

mens shed

BryanF

Jim1000 wrote: »

wow calahonda , you are a man of foresight. I would have forgotten that. Thing is, as its a flowing screed the screeders have stipulated I lay the dpc over the insulation. This means it will be only 60mm below the surface. The fixers need to be longer than this so whats my option?

DPC goes below the insulation: DPC = damp proof 'course' taped and sealed

what the fixers are referring to is a simple polythene sheet to protect the insulation from the screed

are you sure you're up to the task of managing this project?

dodzy

BryanF wrote: »

DPC goes below the insulation: DPC = damp proof 'course' taped and sealed

what the fixers are referring to is a simple polythene sheet to protect the insulation from the screed

are you sure you're up to the task of managing this project?

Ah yes, can't beat boards DIY to give you a kick in the teeth when you are looking forward to a challenge. It's a stud partition, not a spaceship. I'm sure the OP will manage it just fine with info provided thus far.

Kevin McCloud

BryanF wrote: »

DPC goes below the insulation: DPC = damp proof 'course' taped and sealed

Incorrect, what you are referring to is DPM. DPM = damp proof membrane. DPC is used in the blockwork to stop damp rising.

BryanF

Kevin McCloud wrote: »

Incorrect, what you are referring to is DPM. DPM = damp proof membrane. DPC is used in the blockwork to stop damp rising.

yep thanks dpm. Regardless its under the insulation it should go.

Calahonda52

Jim1000 wrote: »

wpw cal , you are a man of foresight. I would have forgotten that. Thing is, as its a flowing screed the screeders have stipulated I lay the dpc over the insulation. This means it will be only 60mm below the surface. The fixers need to be longer than this so whats my option?

3 inches is 75 mm so that is plenty unless u are hitching your horse to it
Assuming the sole plate
http://en.wikipedia.org/wiki/Sill_plate

is 100 mm wide then you have loads of room to put two fixings side by side at each spot, like the nails in the rest of the frame.