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i think those check valves in the taps are more like improving existing when fitting new tap to old external feed. Think the regs mandate an inline DCV. be fine though, you'll only give the family the runs if a dead rat crawls up it, not the whole town so it's not too bad ;) I jest, neat install

My bad explanation, I mean - if the fan has a perm live it may not be able to be isolated. you would want a switched live either switched from the light switch (not required if the fan is humidity controlled) or switched by a wall isolator outside the room

Hello. The humidistat fan needs a switched live because there is no way to isolate it locally at the fan because it is automatic. So you need to have a separate pull switch installed for manual isolation (or a high level fused wall switch outside the bathroom). Other fans with timers or PIR (or...

Is it near the blocked chimney breast? Or against another wall? Chimney breast needs ventilation. Is the chimney pot still open? Is it cavity wall?

To answer your question no, typical domestic boilers don’t need fire compartmentalisation therefore you are not penetrating a fire barrier by chopping into the cupboard for the duct. But as above your idea is not the best from a ducting perspective regardless. (One per room at the very least)

Don’t buy a peddle dashed house? Do you live in Cornwall by any chance..

If you look in Wickes or B&Q these days that is the size of the rest bends they offer, which do include a resting heel, less often seen are the proper long radius rest bends.

Yes that's fine as it's roddable it's perfectly acceptable

I would suppose the top and bottom (side) edges of beams are not totally straight, as made in the roll forming process, only the middle web would have a true dimension 'flatness', hence spacers ensure the beams would remain parallel when tightened together. Notwithstanding above, builder did...

Should be 1" mdpe & plastic meter I expect, how did it go? Realise this is an old post sorry just interested...

I have a random IV in my plumbing box with an unusual fitting on one side, maybe it is for these new fangled microbore tap cons

You need a backplate elbow tap, and a mdpe compression male iron for the plastic, and probably a reducing bush to suit the different threads, (unless you get the comp MI with correct thread to suit the new tap. And as above, lag the pipe for frost protection. Oh wait one post wonder, should've...

Not because of damage but because you do not want potable water to be warm, ever.. (Legionella etc) You can insulate both both of the pipes to minimise heat conduction, ideally separate penetrations though yes.

Changes in direction should be roddable, at least one of those should be as its 180. Assume you've already got the pan but they are available with handed outlets (IE exits to the side not out the back) I have no other contribution sorry lol

We had rainwater tanks in our old garden that looked like that, house was 1800's though. Only one way to find out... (Send the youngest boy in)

it just helps stop the bricks getting wet all the time, which can lead to issues such as frost damage etc

I think just the plain old intellect to acknowledge it isn’t a real problem! It didn’t start ruining people’s lives until about the 50’s when it magicked out of nowhere... Yes just as above posters link!

Wall penetration should be mortared IMHO. Replace.

Interested in this topic also I am..

Touche