Search results

If you’ve got 100mm PIR in the cavity then you probably don’t need anything else internally.

I doubt the Planning Oficers even check the BR sign off. In all likelihood the only way they ever know if something has been built differently to the application is if a disgruntled neighbour makes a complaint. The officer signing off the Building Regs is only interested is whether it has been...

I don’t think it needs to be 1m away and non-combustible, it’s one or the other up to 30sq/m

I did pretty much the same as AV. I filled my 7” joists with loft insulation, then stapled breathable membrane underneath to hold it in place. I’ve just done a large vaulted ceiling with PIR and that was tricky enough to get fitting tightly without the access restrictions. Edit - How about a...

The Welsh Water guidance is pretty clear in that it’s a ‘No’ within 500mm and the accepted solutions are move the manhole or change the building design. And if you want to move the manhole you need to use their approved contractors. When you say ‘right up to’ is that literally kissing the...

I’ve just used them in 10mm steel. It was slightly quicker to pre-drill, but it was do-able with out. To drill the pilots I just used a 5mm Bosch drill bit from Screwfix and a Makita drill.

I went straight over the top. Took ages to dry.

We’re in the same boat as fourtytwo with an Openreach cable across our property. There’s enough slack on the pole to raise the cable a couple of metres easily, but OR want £900 to come out and provide a quote. Yes £900, not to do the job, but to put together a quote to then do the work. I...

I’ve just had a look through section 1 of the Scottish Techical Handbook but it has very few references to absolute figures or dimensions, instead referring to a series of British Standards - and I’m not trawling through them! The 665mm minimum is only that in as such as most BCO’s would accept...

Where does the DPC sit? It would be usual for it to be about the level of your purple line. If the Inspector is assuming that it sits on top of the eng bricks, then he probably thinks it’s too high. As Woody says which bricks go where is irrelevant. DPC level, and ground level as per Ivor...

There’s no regs for insulating between heated spaces - so if it’s the space between a kitchen ceiling and a bedroom floor (for instance) no insulation is needed. Floors is the bit directly above the ground, which needs to be insulated to stop your heat disappearing into the earth or air.

Well Part A of the Building Regs (pg 37) gives minimum foundation widths in varying ground conditions for differing loads. But, apart from building on rock, the table doesn’t refer to a wall width. If you want to build a 350mm wall on a 600mm foundation you’re either going to need to give your...

Mine wouldn’t accept a 350mm wall on a 600mm foundation, it had to be the full 650mm. Then when the SE specified a 140mm internal skin he wanted me to make it another 40mm wider.

I’ve just done a 150mm cavity with 100mm PIR. BCO wanted a 50mm clear cavity due to the coastal location. If I had a choice I’d do 150mm full fill with Rockwool.

As CDBE says, get your padstones in first and then it’s pretty easy. The only difference of opinion is that at a push I’d go slightly too short - the Fabricators can always make up a steel shim / packer if you’ve missed a critical height.

I’ve seen a couple of references to a 30mm overlap of the cavity. https://www.labcwarranty.co.uk/hubfs/Technical%20Manual%20v10%20Files%20and%20Images/Manual%20Sections/Section%208%20Windows%20and%20Doors.pdf

Surely it’s more likely that a 25mm thick timber is going to snap with the weight of 1.6m of fence blowing in the wind? These look like they might take a thread from both sides or just recess the stub into the timber...

Cold water tank in the loft? During the day it keeps getting used so the level remains low, but over night a leaky ball valve let’s it fill up and overflow. Overflow pipe not connected or broken?

Is it definitely a hazard? Which of the 29 sections do you think it fails on?

I'm pretty soon going to be at the point of forming the valley between my extension and the original house. The original house is straight felt, batten, tiled; the extension will be felt, counter-batten, batten, tiled - so I've got an extra 25mm of height to deal with. Will a standard GRP...