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House renovation with new extension New Floor / oversight on new extended room Replacement floor on existing part of house , with new oversight /membrane. Floor being hacked up Underfloor heating within new screed on all ground floor on one level Assuming Finished floor levels are correct and...

~Vaulted kitchen asymmetric roof single storey extension ~Block work with cavity supporting Catnic type RSJ ~Bespoke glazing (2 x triangular) on RSJ ~Sliding doors under RSJ ~Ali cladding C section over external of RSJ My concern pre door/glazing install is the detail on the RSJ with the...

I have a "classic bond' once piece EPDM roof I need to install an Ubbink extract ventilator through the roof. The base of this ventilator kit has a EPDM flange- Looks as if is supposed to be heat welded Can I seal / fix this any other way on the existing EPDM without using heat??

HI what size & type of cable is required if putting sub mains to an annexe & a garage . The main house is on external meter box Garage & annexe to have their own supply and consumer unit fed back from just before the house internal consumer unit (so all metered from main meter) Not sure what...

Small kitchen in a self contained detached annexe Best way of connecting / cable sizing for an Oven & Induction 2 zone hob Oven has plug on it and 2.2kw Hob is rated at 2.8kw. Is it best to run a 6mm to a single 32a dp switch , then a combined outlet plate behind oven or is this overkill ?

We have a 15 degree pitched warm roof with Sarnafil. It has 2 standard GGU MK06 Velux windows. WHAT IS THE CORRECT FLASHING ??? Or Correct flashing method?? My carpenter has built the kerbs ready, to which the Sarnafil fitters have covered right over the top I'm tired of going between Velux...

Timber Frame annexe has cladding, battens, breather membrane, OSB, then 150mm timber frame wall Inside: celotex between studs Then what's my best option as regards insulating, vapour barrier , service voids etc A multi foil insulting vapor barrier seems a good idea ??? If constructing...

I have a timber frame structure mounted on concrete blocks around the perimeter, which are bedded on a concrete base.The concrete base has a membrane but is cut off flush. as i'm doing a solid floor inc Ufh made up of 150mm celotex , a seperation layer then UFH stapled on top , before a 75mm...

Hi Garden detached room under construction . Warm roof will be used (18mm osb then 100 celotex then 18 osb) Query : Insulation with the eves at end of joist runs, as there are noggins etc please see attached Before answering - thanks

new built detached outbuilding/store/workshop modern build concrete blocks/cavity insulation/thermalite blocks inside (won't be skimmed or boarded) floor insulated mono pitched low pitched roof occasional heat but more about keeping stuff dry as opposed to getting moisture damage in old shed...