Nickfromwales

You need a wife mate. Get on Tinder asap. We’ll provide character references.

It’s just about when 2 pipes need to converge, where you’ll need IC’s at each instance or any time there’s a change in direction. You can run one pipe from A>B for some distance, but getting most BCO’s to agree to it is another thing. IIRC the last one wouldn’t let us go more than 8m (in a perfectly straight line)….. so ended up with 3 IC’s between the house and the road.

You'll need 47mm for the cooker / hob cable

Indeed. The Durgo (AAV) needs to be above any 1st floor WC, and needs to be accessible; eg if it fails and starts letting any stink out. Ground floor WC's don't need an AAV if the 'drop' (invert) is less than 1300mm.

If you have the height, you could install resilient bars and then a layer of 15mm sound block plasterboard onto those. The RB's deal with foot traffic and impact etc. The builders wouldn't normally install insulation in a makeover / refurb unless building control had stipulated it, and it really should have been part of the spec that they tendered to so not really anyone's fault. Reality is that the void there is within the heated envelope, so insulation in that void would add nothing re thermal performance anyways, but you'd obvs have preferred it for acoustics. Avoid penetrating the PB for spotlights, or go for a very good quality unit which is sound rated (as well as fire). If this is life or death, you could drill the existing plasterboard and pump the voids with cellulose (Warmcell from PYC), then over-board and skim.

You'll need to work out if there's need for moisture control and where you're integrating that. For the timber floors I doubt you'll need any underlay, but some insulation may be of benefit. Can you provide some more details of what's there / what you propose?

What capacity tank are you thinking of using? At 5000L or under I'd really not bother.

If it's a good quality unit and is set to run at low speed / duty, then you shouldn't be able to hear it (if it's a unit that will be accepted by PH standards), and I've never had any issue with these being on a stud wall of a TF (mostly MBC or English Bro's). Most of my clients have said how quiet my installs are, but if you're at 75% duty on trickle vs my remit of 40-45% on trickle then this may be an issue. You don't need instructions, it's just a metal strip with a few holes in it. Then the unit hangs on it like a picture. You can fit qty 4 or qty 6 x 2" squares of 10mm thick neoprene on the rear of the unit which is likely more than suffice. Offer the bracket up and mark the holes, then see what you're screwing into there, beefing up according to what you need. Manufacturers and suppliers will just give you a generic reply re fitting, as you're not getting them to do it. Or you'll just get no reply at all.

Yes. Shingle goes under / around / atop, and then the sand blinding goes in. Groundworkers will just shoot through this, but if there's any major backfill over the shingle then they may well use a bit more type 1, then the sand (usually dependant on how far they have to walk to either pile of 'stuff' ).

Don’t bother with tripods indoors, they’re too susceptible to foot traffic.

I used the red line Bosch 3 80, sub £400 iirc, for years and years and then (when I got fed up of batteries being consumed) I went and got the Milwaukee Green 3 line with 4ah rechargeable batteries. Miles better and sub £600 iirc.

@Mulberry View Have you checked the pre charge pressure in the expansion vessel?

I’m one for caution but it’s just push fit with a retaining clip. Worst thing that can happen here is you get wet tbf. Drain down, get a towel, isolate the electrics to the boiler, and get it swapped out. You'll need a lint free cloth to clean out the receptacle and some silicone grease to lube the o ring on the new item. Slight twisting motion when you offer it back in. Same retaining clip will be fine.

Yup. 👍. SVP’s vent the accumulated gasses in the network sewerage system, and as you’re on an STP you don’t need to do that. As above, you can put it on an external facade out of sight or just route a branch off the STP and do a short stub stack / riser in the garden or landscaping, defo away from where you’re BBQ’ing lol, although these things don’t seem to stink as much as a sewer would.

Rail for me, EVERY damn time .