Andeh

+1 for a 50/60mm flow screed and adding an extra 25 or 50mm odd to insulation.

We have a Vent Axia MVHR installed, and we have 3 x boost switches for the bathrooms to manually boost if (after your poo!). The MVHR was installed several months ago, and will be commissioned in a few weeks time. The MVHR installer is shrugging off the boost switch connections as he only ever installs the master one which comes with a Rj11 type connector & claims he isn't an electrician. Pisses me off this, but he won't budge. As a result my electrician needs to pick up the slack. However, my electrician is scratching his head a bit on the wiring for it, with the attached diagrams being all that is offered in the manual. Each boost switch needs 4 core cable, which is routed back to the MVHR. However, on the MVHR unit there is only 2 terminals per switch. Can anyone shed any light on this please? Boost switch: https://www.tradesparky.com/ecommerce/downloadasset?productAssetId=571966 Vent Axia Manual: https://www.vent-axia.com/sites/default/files/439817_ad.pdf Thanks!

Thanks guys, hopefully get this resolved on Monday.

Oh bugger! So had we plugged the inverter into the fuse box, the system would probably have worked.. DAMN! 2 weeks of stress and £275 on a spare inverter.

Could you expand on that please? Neither of us are solar experts, and I feel may have made a mistake here....

Hi Dave, thanks....now this sounds really interesting.... as the Inverter wouldn't switch on when he first connected it up, and we bought a replacement thinking it was broken. However, we never connected it into the Grid....so I wonder if the inverter never switched on because it didnt see a grid connection???

Best I have right now. We think the inverter packed up, so have replaced it with a new one due to be delivered today and fitted tomorrow... Hence it all looking messy.

Thanks Steamy. Yes, he is not a solar expert, just a good electrician reconnecting the system up. So the Solarpanels feed just flows into the fusebox? As we have 3 phase, and this is a single phase inverter....he is just going to connect the Solar into our 1st Phase (which feeds the house)... is that all that is required?

Our electrician thinks we need a switch to divert the power between PV & mains into the fusebox. Ie when the day is sunny we switch the PV on to feed the fusebox, then at night switch it so that its 'off' and the mains power is 'on'. He says manual ones are cheap and automatic ones are £80 to £400. It's a old 13 year old system we are keeping due to the favourable FiT, and he dismantled it off our original roof 2 years ago (i know FiT rules have changed, but we dont have the funds to upgrade it). The system consists of a old Solarmax 4200s, couple of large isolation switches and a grey meter box. I couldnt get my head around this, as I have never heard of anyone needing to manual engage their solar system & switch back & forth from manual grid. He brought up a couple of google image search showing 'control boxes' connect to solar installs, but wasn't totally sure either way. I dont feel like he is up selling me & he is happy to connect it all in and see what happens. He is a good guy, albeit it bloody expensive! Any advice, or suggestions as to what he is referring to?

We have the on roof system, it works OK but is noticable in how far it sits off the roof. We do have an old frame that was designed to sit under tiles bolted to the trocal feet which really spaces it off the roof a lot. One to sort when we replace the solar panels in future. We can't replace solar panels due to original feed in tariff we are trying to maintain.

That's my love of expanding foam, figured it wouldn't hurt to try and insulate the pipework as we want warm towels but not an uncomfortably room warm.... Every little helps!

And a pic of the tray and stainless steel plate.... Tiler redid the boarding as it wasn't quite square.

Tiler did the room like the attached pic (whole room is blue, the floor just has the anti crack mat laid in top of it), but the plumber is doing the Drains. The wetroom tray only came with the large plastic former, then a metal stainless steel glue in plate for the Drains to be mounted into...which is what the pics show. Tiler using the white spacer as a guide in pic below. The kit just contained the metal grate rubber gasket then 4 of those white spacer things. Tiler did everything, but has left it like the previous pics.

It is useful to have enough space around the edges to access them for annual cleaning!

We have a wetroom going in our bungalow. It's build up is: 1) Block beam 2) insulation 3) concrete slab 4) wetroom tray (white plastic preformed) 5) Self leveller or equiv, something which blends the tray in with the rest of the room 6) blue tanking fluid x 2 7) Slip membrane 8) Tiles What I don't understand is what the drain details will be, how it is sealed up with so many layers? Usually I've seen some sort of bowl that is silcioned to it, but I don't see one in the drain kit on site. Pic attached! Thanks

Very bland!! I'm amazed

Pretty sure I just entered house name as the project name, and filled the rest out as normal. They never queried it, and so far so good.... Progressing fairly OK. Though I did need to raise it as a complaint in the end as I signed the contract and they sat on it for 4 weeks...

EDF confirmed same standing charge, same rates and tariffs when I asked them about our upcoming 3ph install

Hi all, My Google-fu is letting me down. We have sliding doors with a desire for level threshold inside/outside... The sliding door though has a 10mm lip that hangs down over the runners, preventing the tiles from butting up against the sliding door frame. The sliding door frames sits on a block 'wall' which sticks out about 50mm,preventing normal depth Drains from sitting hard up against the frame. Builder plans to install a blade drainage profile several cm off the doors to prevent any rain deluge flowing up(ish) the patio incline, which will drain into a normal drainage channel. I would prefer to avoid having a random 15mm gap for door slidding before tiling continues then another 15mm gap for the blade drain I would prefer a two in one, a narrow AND shallow drain that can sit below this sliding door lip that also provides emergancy water drainage during storms. Does anyone know of a sort of 40mm wide and 40mm deep type drainage channel?? Many thanks,

We're still working through this. Our ASHP is single phase 12kw Samsung. Solar inverter is an old old one, but also single phase. Reality is one phase will have PV, ASHP, and house. Other phase double garage and garden and final phase single garage and chargers. So PV sits in the main phase we will draw it from. Electrician says he will fit a diverter that will switch PV to whatever phase needs it... Not sure if that exists without being expensive, need to look into it more.

I'm sitting on an accepted quote of £1900 to swap out single phase to three phase next month. However I am sure I stumbled across a thread on here a few weeks ago suggesting grid improvements would be free of charge as people move to bugger renewable and home charging. I can't find the thread though, and check if I'm eligible and could potentially save some money. Am I going mad, or does anyone know if a thread like this?.. Thanks

We had an issue with some AC pipes that meant we had to cut 3 x MVHR 90mm pipes to access them (AC pipes tucked tight above them) I now need to re-join the 90mm MVHR pipes. Does anyone know the name/link to where I can find three male to male fittings, that will not be blown off if the air pressure gets too high!? Many thanks,

We took the same approach and, touch wood, agree.... Peace of mind is worth investing in!!

Being surprised at how expensive it is is the default emotion in the self builders world these days. I'm afraid you will become numb to it very quick. Carting away dug out ground is also expensive.