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I have built a kitchen ext and at the same time continued the glass roof of the conservatory over the top (walls are brick cavity). The wall between the conservatory is single skin brick which I now need to insulate on the kitchen side. I will batten off and fix kingspan but have two...

Just need some advice. I have just cut out a 3.4m section of the back wall of my house to take two 203x103 UB. Once in I will not be able to access the inside as they are at joist level and right up against a joist (joists parallel with beam). Do they need any form of fire protection or...

Hi Just a quick question, whats best to use around the perimeter of the slab? I got 100mm kingspan under slab and ask Trvis perkins for some perimeter insulation and they delivered: FILLCRETE EXPANSION JOINT FILLABOARD STRIP 12X100X2440 I thought fillaboard was only for expansion...

Hi all hope someone can help with so guidance. I'm doing a small kitchen extension on the back of the house, where it joins the conservatory I was going to leave it as a single skin wall (see pic). I'm doing things right so involved building control and of course as the conservatory is...

Can I confirm what I need for the slab for my kitchen ext (2.5m x 3m). It will be inspected by BCO. 150mm hardcore > sand blinding > 1200g membrane > 100mm Kingspan > membrane > 100mm concrete slab. I was not goig to have a screed as the floor will be tiled. Does the colour of the...

Hi, I’m doing a kitchen extension which is brick and thermolite (100mm insulation) cavity walls with a glass roof (flowing from conservatory). When I spoke to Building Control about this they told me on the phone I would need to show the house was no less efficient after the extension than...

I had building control out today to inspect my foundations which were passed. Next is the slab, I had intended: 150mm hardcore > sand blinding > membrane > 100mm Kingspan > 100mm concrete slab. The BCO said vapour barrier between the kingspan and slab. Is this normal? im guessing it...

I have been searching everyware for information on minimum door sizes but can't find anything. I'm completing a side extension that upstairs makes the bedrooms bigger and adds two en-suites. The main family bathroom (as with all the door in the house) has an oversize door fitted in both...

I currently have a 40amp MCB fitted in my CU for my immersion heater. I don't use the immersion heater as I use gas so its only a back-up. I'm changing the MCB's for RCBO's because I'm having an exstension built and need to bring them upto code. I thought an immersion was normally...

I need to disconnect my Air Conditioning unit without loosing all the refrigerant and need some advice. When the guy connected up my split unit I knew I would need to disconnect it after a couple of years so asked him then. He said the easiest way was to turn off one valve and run the unit...

Quick question, I'm building and extension, when I extend the cuircuits (lighting and sockets) I need to get them to comply wit the latest regs. I undestand its now a requirement to have RCD protection to all cuicuits. I have a Hager CU with no RCD. Would it comply to change the MCB's...

I am putting in a foul for a new bathroom in an extension I'm having built. Building Control have been booked but I'm a little concerned and need some advice. This is how it goes: I have an inspection point in the back garden, I have taken a run off one of the capped outlets, the pipe...