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About gwebstech

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  1. Hi yes it is trench fill But in my notes from the architect it says that its cavity filled with concrete to either 225mm below DPC or 150mm below, im not sure which is rigt and why it states 2 differing options thanks
  2. Hi all Im getting ready to pour my concrete into the trench weve dug. The trench is about 1m deep, the building notes say 700mm conrete into that, then build the substructure from either 7n concrete blocks and or engineering bricks. Seeing as laying the initial first courses in the superstructure is slow and time consuming (ie expensive as i cant lay bricks well) im wondering what the maximum depth of concrete i can pour in? i know the engineering bricks/blocks have to be filled with concrete to strengthen them, but am i determined by where the DPC will be and the concrete cavity fill has to be a certain depth below the DPC? Can i put more concrete in and save a couple of courses of bricks? thanks
  3. I was looking today and there is nowhere that out phone line comes out of the floor, our phone connection point is on the wall above the skirting so would our line have come through the cavity?
  4. Hi all Im juat wondering if anybody knows of a tool or calculator where i can compare ie 50mm foil insulation to 100mm rockwool im thinking of insulating a loft and it will need 400mm of rockwool but i know how horrible that is to use, even with masks etc and was considering spending more and using foil boards for example but i dont know what to compare. id imagine 250mm foil boards is as warm as 400mm rockwool but i need to work it out thanks
  5. so, the gas. elec, water companies want all their pipes ducted from the road right up to/inside the house then?
  6. brilliant, i hear brillo pads work well too
  7. and when you guys have used ducting to get xyz in the house, what did you fill it in with? otherwise it wont pass an air tightness test surely
  8. Is this on a new build? why not just run it underground on the outside of the house and up to the meter box on the outide of the wall?
  9. Thanks for the bruilliant reply Declan, ill check those products out. I know the toilet waste has to be in situ, the waste water ie from sinks will go in pipes coming out of the walls. as will the other 2 toilets will be coming out of the outside wall and down. im assuming that the gas and elec they would go to the meter boxes on the wall and were covered with a protective pipe like on my house (built circa 2001) thanks
  10. Hi all What sizes are the water pipe that will come into the house for a new build connection? i need to knwo what size ducting to buy to route the water and electricity cables through thr concrete floor. Is it just the elec and water that needs the ducting? thanks
  11. Hi all Ive been given my building regs spec by my architect, and he says that 100mm kooltherm is fine for the concrete slab, (its a new build) he says a recent project used it and it got a B energy rating. Ive looked at the prices and its circa £30 sq.m where i can get celotex 150mm for about £22 sq.m ! so a saving of about £600. do i need to look at which has the highest R value to see which gives best heat insulation? the kooltherm R is 5.5m2k/w and the celotex is 6.8 m2w/k or do i need to look at the thermal conductivity? thanks
  12. Hi all After reading the specs for this new build im hoping to get cracking on, it says to use easi joists or wolf system joists, anyone recommend a firm thats relatively cheap for these? thanks