Post and beam

Obviously the type of seal on a sliding sash window is going to be less effective than a traditional casement. But how much less effective? I have been investigating masterframe sash windows, they look good. But if they are not compatible with a highly airtight build then i need to abandon them as an option. Is anyone else using them and achieving good ACH figures or is the whole idea stupid?

How much? That was meant to be an exclamation of shock not actually a question.

Or get someone like Potton to turn the planning drawings into something that can be built. Although Potton are relatively expensive they would do all that is required to get the thing built right.

When the power company surveyor arrives i want to be as informed as possible. Do i need to ask for/demand a specific current capacity. EV capability or anything tht i am currently ignorant of. The house will be a 200m2 detached. I need an ASHP. If its not too expensive i might request an EV capability. Is there a specific location in the house that the CU has to go or is it down to me. What have i forgotten? Thanks in advance as always guys

Nice rendering

Yep, complete Bo!!ox. Is it likely that architects designed ' just enough' strength into Multi storey car parks.

Do you have a leak? Dirty water sounds a little worrying

Well there is the problem right there. Easy to say, not so easy to find one which is my issue in a nut shell. Since i posted last night i have e mailed 4 installers from the .gov website of accredited installers. Lets see what transpires Agree. Thats why i cannot see the £10k ish fee for doing so.

Fogg What i can say about my Potton experience is that the planning permission submission that they talk about is not part of their house design service. It is a referral to agents of theirs and cost me £2.5k. Then £6.5k for trial pits/foundations design.

I am having a Potton House built soon. Have planning permission and a design from their older style range. A couple of others on here as well. Your design is very modern looking.

I am starting to despair of the whole ASHP saga. See the Chelmer thread. £12300 + VAT for supply only. We all know that the parts are available to buy and what they cost. I am not capable of doing this job but there clearly are people that are. Where are you all ?

Its 201m2 when built. I dont believe it will need that size of pump. Yes it is. I am beginning to despair of this whole racket.

I have had a quote from them today, initiated out of this thread. ASHP(SAMSUNG 12KW) 350L cylinder, UFH hardware and a few design bits and sundry plumbing parts. Dont understand the plumbing bits but i'm sure they are necessary. £12300 + VAT supply only. So, very nearly £15k

Thats a real shame for the OP. My 'standard' permission requires start within 3 years. I asked, and digging the footings is the minimum recognised as starting.

No trouble at all actually. 10 weeks total, from submission to full planning. My sister and brother in law had permission on the same piece of land in 2016, that never went ahead. At that time east Herts were particularly difficult apparently. A single person by all accounts that has since retired. My brother in law was so worn down by the process that he accepted all of their restrictions just to secure some kind of permission. Smaller and simpler than he would ideally have liked but he was afraid to argue with them(Her)

Intrigued to know where but perhaps you dont want to say. We have recently got our planning permission for a house in Aston. Good to see a fellow Stevenage resident on the forum. Welcome. Can you just dig the footings for the permission which stops the timer doesn't it? And submit your extended application. Then, either way you wont run into the 2 or 3 year time limit.

Guys, i am not saying that they are unreasonable at all just putting the info out there. It does not suit my situation for the reasons i stated in my first sentence. This is the condition i have with my TF supplier and the timing. Not complaining about the TF company either, its just a co ordination issue for me.

They have so far declined to get involved. By the time i have the plans that they want i will have needed to make the call on which pump i need. In order to successfully quote for this property we would need you to provide architectural plans detailing ceiling heights, room dimensions, insulation, underfloor heating schematics showing pipe-run centre measurements and locations of manifolds, proposed floor finishes on UFH areas eg., Laminate, hardwood, ceramic tiles etc., proposed location of all radiators, glazing specifications and sizes of units of windows and doors, proposed site of ASHP and hot water cylinder, roof surface eg. Tiles etc. We would also require details of the electrical supply eg 1phase/3phase? Also we usually wouldn’t be able to design the hot water part of this system without knowing the standing and working pressures of the mains water supply as well as the flow rates of the water. We would need you to meet us on these requirements as we cannot specify an ASHP kw output for your property without calculating a full heat loss calculation for it.

Following the 'slow and low approach' to planning the UFH and Heat pump for my upcoming build i believe that close pipe centres at as low a temp as practical is the way to go. So, if i go with 100mm centres i doubt that i can accurately( if at all) lay the pipes required to a neat pattern. Not without the castellated panels anyway. I priced these this morning and it looks like it might be about £1.5k just for these. I understand that UFH installers are generally not keen on close pipe centres because it takes too long to lay. Does anyone know if this is actually true. Even if it is i think it might be better to just pay them what they need to spend the time to ensure a good job.

As per the OP figures, i have been quoted £21k ( excluding the £5k cash back) for a Nibe 11 kw by Nu-heat. and not much less for a Grant from 2 different suppliers. As it happens i spoke to a guy at the NEC show last weekend on the NIBE stand. I told him i wanted to buy his products but would not pay £21k ish. When he asked who the quote was from he just gave me a very knowing smile. He then said he would get me a quote from someone else from their suppliers list.

I have never previously heard of them but thought there was no harm in filling out their quote submission form. Who knows they may turn out to be good. Not too far from me in North hertforhsire.

The guy that did ours was in the house for no more than 15 minutes. I think it was/is pointless but a legal requirement.

F***, I just paid £90 for an EPC so that i can sell my current house before i start to build. That appears to be the going rate around here. Northern home counties.

This sounds like a lot. I have had a quote @ £7k All in but its for a branched system using Regavent and their own unit. I wont be using these people though, because A: If you see inside their unit it looks like total rubbish . B: They appear to insist on a branched system. C Having seen a partial install of theirs the ducting is held together with gaffer tape and untrimmed cable ties. So, i used the £7k figure, and costed a Brink 400, 90mm ducting and all the fittings @ approximately £5k. Which leave me £2k to install it myself and get some help in to finalise and commission/ get it signed off properly. Wish me luck

Hi Dude What do you think of them and their prices? I guess you re happy because you chose to use them. Anything else to say about the product.