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I’m not a plumber firstly, but here goes. I’m doing a loft conversion, the new bathroom toilet is directly above the existing downstairs toilet. The plastic soil pipe in the downstairs concrete floor comes up about 9 inches from the wall. (I don’t want to take the soil pipe through an outside...

when I can actually get hold of him I will ask if it is a radon gas barrier, I’m in the south east, I’m not sure whether I’m in a radon gas area or if it’s required. yeah my rear wall is 6.3 m long and my bifold is 4m long. So they’ll have to go under, also works out that I’ll need 3 air...

I am building a level threshold for my bifold on my extension, having an air brick Telescopic vent just below dpc, would clash with the insulation on my block and beam floor. My architect has detail a cavity tray above the air brick, even though there’s a bifold directly above it? Is this required?

How would you do it? Do you have any details you know of online? This is what I’ve seen

My first question is, my architect has not included a level threshold detail for my bifold doors. Can I differ from the drawing without having it approved? Can my BCI just approve a method? can someone explain or show me the detail for a level threshold? (Beam and block floor) I would’ve...

Hi I’m about to commence on a rear extension. The block and beam layout has to be drawn up and sizes spec’d by the beam supplier, and then sent through to our BCO. my question is, where the beams key into the existing wall, can they simply rest on the outer brick skin? (On a DPC) or do they...

Forgive me if this sounds like I’m taking advantage of the current coronavirus outbreak, but due to this my brother is on universal credit. This has made us eligible to get the full government grant. I ended up calling propela about their “masonry creme” product, their data sheets don’t show any...

I reckon the insulated plasterboard required would be quite thick, and would make window reveals ridiculously wide.

Do you know if they supply a data sheet to show how much it does actually improve the u-value?

Hi thanks for the advice, is “poly beads” the brand name? If not what is the name and where can I buy this?

Hi guys/gals I’ve just had a plans appraisal back from our independent buildings inspector regarding a rear extension and loft conversion. He’s asked my architect to explain how the existing gable end wall will be insulated to ensure a u-value of 0.28W/m2k. Obviously the most practical way of...

I’m doing a rear extension on my bungalow, the floor is going to be block and beam. My question is... where the beams key into the existing cavity wall, do they have to knock through so that they sit on the inner load bearing skin? Or can they rest on the outer skin? any advice would be...

There are no trees or hedges, not sure on shrinkable or not. ahh okay, I just thought concrete bearing onto brickwork sounded odd to me.

Hi I’m building a rear extension on my 2 bed bungalow. The existing foundation is a strip foundation, and it’s a fair way below ground level, I’d say 900mm. Because the ground is clay, we have a spec of a 600mm x 1000mm trench fill foundation. My question is, can this new foundation rise above...

Thankyou for the response, my regs drawings are specing dense concrete blocks, I don’t know if I can change this or discuss with BCO. do you use this product regularly?

Ahh yes the radon gas may be the case, but it do us also suggest weep holes? in regards to the rolling threshold, is this sort of detail what you mean?

I’m building a rear extension on my bungalow. The block and beam floor has been designed so that the beams run parallel with the rear facing wall. So i understand that usually if they were running perpendicular, the beams would key into the existing wall and be supported by the load bearing...

Is a cavity required below a bifold door? My architect has sent me drawings and it’s showing a cavity tray with weep holes below the bifold, I’m presuming it may be there to send any water that goes through the frame/sill to the outside (he’s currently away) here’s the part of the drawing...

Yeah, I think it was more the fear that they may notice the dimensions of the foundation dug where it meets the existing house, as they wouldn’t match up accurately to the cavity wall position. maybe too the “toe” of the foundation showing 300mm instead of 150mm. maybe I’m just looking into it...

if this is the case how would you overcome the thermal bridging, I doubt insulation back plasterboard would sort it?