PeterW

Go the whole hog and run a pair of ducts as the mat and the thermostat wire should really be separated. Also run ducts to wall points for electric towel rails too, and terminate in “dry” areas where a switch can be added if needed.

Be aware with top hung ones that there is a ratchet spring in them and you need to push the unit out to its highest setting once installed to engage the springs. If you don’t do this, the sash just drops straight back down.

Air test not needed but given that you can open a door in a howling gale and nothing moves, it would suggest that it’s working. Only issue has been where there was some wind washing in a small enclosed attic space and it moved a little and tends to rustle a bit. Sorted when the insulation settled down.

Yep.

That’s a lovely shape and could be triangulated simply by a truss manufacturer to make it into a single span truss. You would only then need wall plate detail.

Is he using the same tw&t that installed the UVC..?? If so, it needs a picture drawn in crayon with no more than 3 colours....

If he breaks into the main he will get exactly the same issue as he has now. Tell him to bite the bullet and put a 250 litre cold tank in the attic. Must be that size as if all the showers are running on that UVC then it will be chewing the incoming supply.

emergent bat survey can only be done between May and September, roosting survey can be done all year round. Costs about £1200 for both.

Welcome ..! A first post with photos ..! That looks really nice ..! How much more left to do ..??

Decent Stanley knife and a straight edge and take your time to cut it and it will cut clean.

Green scourer and some white spirit and then a good couple of coats of patination oil. Do not use sandpaper ..!!

Another for Pear Stairs. The online modeling allows you to change just the width and for a double winder I needed to vary the depth to make the staircase fit a gap and still meet the Regs. The designer (Steff from memory) reworked the design about half a dozen times to make the width, depth, going and slope all fit. Was very impressed with the whole end to end service.

I couldn’t condone it but a well placed air rifle pellet usually sends the right message .... especially from the angle that it came from a neighbours house ....!

PVGIS - 5 gives you the option to optimize the azimuth and orientation - just check the box and let it do the calculation. You can set one or the other so split the load and put 8 each side, do a -90/90 for east / west and combine the results. Unless you are going to go with tracking then it’s law of diminishing returns as you will gain 0.5-1% at most.

PVGIS used to be the best but @Ed Davies may know of a better one.

I think that is very true. One I’ve dealt with for a while knows that corners are not being cut and that if something isn’t right then it will be coming back out to be redone ..!! Also there is no hiding stuff either as he’s happy that the job is as open as possible - the flip side to all this is when you do hit a snag, a quick call gets you an answer.

@ProDave are you not using the stats provided with the tank ..?? What are you using as an overheat stat ..?

I changed the spec and had a single immersion moved to the bottom of the tank to make sure the E7 charge does the whole tank.

You’ll find that you’re not getting full temperature as the way the coils work - and the sheer size of the coil - then it needs a slightly higher temperature to get the cutoff.

Looks brilliant - just grout the corner gaps and just stand a pot of kitchen utensils in the corner and no-one will know ..!

DWB supply 3x2 and Z Clips for both top and bottom noggins with all of their engineered floors along with enough Egger D4 to bond pretty much everything to everything ..!!!

+1 to that although if I had some 4x2 floating about and the joists have the central blocks then I would fit them as they also make a nice easy central run to take cables down ..!

If it’s fairly smooth then you can use something like the 3M command strip hooks as they don’t mark when you remove them.

I think it is a section header @Dee - just click on the black triangle to the left of the header and it will drop down the next layer of sub forums.

I’m with @Nickfromwales on this one. I’ve set one of these up to go to 52c on the ASHP but boost to 65c overnight on E7 using the immersion. That will take about 85 mins with 3kw immersion and cost around 35p at low rate. Using the 8.8kw Stiebel in-line during peak time would allow me to only use it for 10 minutes for the same cost so that’s a very short shower. I would also have a cold tank and still need to boost every time for hand washing etc. so it will cost more over the day too.