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Hello Peeps I'm not 100% sold on this screed idea ... Nearing the end of my garage conv (hoorah) and for the floor base I've laid sand blinding+dpm+100mm PIR celotex over the existing garage slab, now ready for 75mm sand/cement screed. All as per architect plans. Now that I can see the...

cheers tony1851, much appreciated for info I went with rafters facing opposite - this passed inspection OK :D yet to nail the end rafters home but plan is to butt these right up to the gable blockwork and single-nail from other side, therefore no need for fiddly cuts of insulation like you...

Hi marlb, I'm due to build my extension roof in the next couple of weeks. drywall screws are what I intend to use. out of interest are your rafters only 4" deep? Mine are 6" which allows for 90mm celotex boards inbetween and 50mm under

Hi all I'll be framing my new extension roof this weekend. I have a couple of questions regarding the rafter positions, which the plans do confirm but I would appreciate a 2nd opinion as to whether best practice is being used. I have the two gable ends already built and a 9x3 ridge beam...

thanks noseall, I'd forgotten my cold-deck insulation will bring the ceiling 4" down the purlins :lol:

'lo ... 2nd opinion needed pls? have regs signed off for 1 storey ext. having gable roof of ridge beam + purlins all 75mm x 225mm timbers still considering a vaulted ceiling (as no rafter ties needed anyway) - but obviously purlins will be seen internally and 9" deep. is this acceptable...

mulling this over a bit , there should be very little space for much rainwater to wriggle down onto the dpm if it has a nice thick concrete slab on top and compacted hardcore underneath. so I'll start afresh and lay the hardcore + DPM + concrete now and before the roof is up. this gives me a...

thanks ree. it wasn't the rainwater affecting the concrete I was worried about. if I seal the area with DPM before the roof is up (I am a slow worker) won't the floor area just fill with rainwater that can't drain anywhere? also that I didn't mention, there is a substantial amount of...

quick question ... building a floor sub-base ... can I lay a DPM over the new concrete - rather than between it and the hardcore? would I still need a barrier between the hardcore and concrete (i.e. because of sulphates)? ... reason is, the concrete floor will be built before the...