Dave Jones

As its actually nice today, tried out running the heatpump in reverse to cool the house. To keep above dewpoint (home assistant takes care of this) set at 16C, had the slab down to 16 within 4 hours and the house is noticeably cooler when walking inside. Have 5 panasonic fancoil units in the bedrooms which will test once the painters are done.

your overthinking it. If you have it QS'd thats the price for the work. Not QS + another 30 or 40% because they had long tea breaks a couple days. Fix the quote to the QS and pay to the QS in arrears monthly. Have the chap who did the QS do the visit each month and give you a report of what you need to pay. Fair to everyone and you all know from the start where you stand.

just do this. they wont file anything clowns are all talk.

yeah thats not half. A true half needs 2 cuts per brick. There are companies who will cut bricks for flemish bond etc, if you need more than 2 packs like we did its cheaper top buy an electric wet table saw. we bought a 110v redband table saw. amazing bit of kit, must have put 4000 bricks through it.

no sit the billfold's on top of the marmox, they are a thermal break. mass fill cavity, insulation over top, screed on top of that.

75mm of eps is basically nothing. you need roughly double the thickness of eps to achieve same as celotex.

marmox blocks under the bifold. dpc and conc the cavity behind it. run flooring/screed over the top.

do your own perco test, its dead simple. Heres mine, warranty and BCO fine with it. ]

excess solar through heat pump into slab. the eddi has a feature where it can decide if its more cost effective to drive the heat pump over an immersion for example.

free heating can be leveraged.

new regs now so will see many more as hard to get decent SAP with gas now.

method of heat source is irrelevant. What is the heat loss calcs for your desired internal temperature. Size a unit accordingly.

the correct way of doing this is to put a cavity tray at ground level which 'lifts' the DPC 225 or however many blocks higher. Builder cant have been upto much if they didnt know that.

have a look at other applications submitted and copy one of them.

100mm pipe centres and no zones!

hard to tell but it looks like some repointing has happened in cement mortar, this will trap water in and force it through the inside. very common with 9" solid walls which yours almost certainly is from that period. Check its all lime for starters. May have a slate dpc but unlikely, our 1899 has nothing including no footing. Brickwork should resist being soaked and dry out, if water cannot escape through the front due to modern cement it will go through to the inside.

start with the heatloss calcs.

wheres the cavity closer ?

how far away new meter, can you not just get longer tails and leave everything as is ?

100mm pipe centres for low flow temp and max efficiency. obviously zoning will drop efficiency a fair bit.

your SE will have contacts.

not really. in England, BCO take the planning ref and issue paperwork against it for new build.

anything in ground that has been inspected constitues a 'start' normal way to lock in planning commencement is a short run of footings/garage. locked in forever.

no, stone it up well and you can drive 8 wheeler over it no problem.

sister up with 3x2 so you have a good fixing both into the old joist and for the new flooring. start from highest point and level to that everywhere with a laser.