Sandybay

Thank you very much Temp, That was explained very clearly, I shall now try to explain it to my wife ?.

Thinking about project managing our new build later this year, If you employed a plumber for example, and he looked over your plan worked out everything required for your house, would he purchase materials or would I? And if he did, would he still charge the vat on the materials and his labour, for me to claim later, or would he knock off all vat before I get the bill?

Thanks Temp, Good to hear you can run a dual heating system from an oil boiler efficiently ?

Thanks both, Suppose looking into the future will probably go ashp, but good to know that can use oil boiler too.

Hi, Is it possible to run under floor heating system and hot water, from an oil boiler and what are the pros and cons versus Ashp to do the same?

Good to know, thanks.

Hi, Thanks for letting me know that, good to have an Idea of what components are best, certainly wouldn't want cheap pipes, no changing them easily!

Hi, Looking ahead into my build, I was thinking what would be a recommended brand of under floor pipe and associated parts required to complete a system pump manifold etc. Or are all similar?

Hi, That was last year, before the virus.

I had an old 60s bungalow with asbestos cement tiles, with correct ppe on I removed them almost entirely whole, double bagged them and the local dump had a special skip for them was probably around 1,5-2 tons. Saved a fair bit I reckon. To spend on something else!

If you don't have any experience block laying can easily go wrong, the mortor consistency if absolutely critical too wet there's no going back! Setting out for a foundation requires a high level of accuracy. But one tool that can help a lot is the bricky tool, Providing your strip foundation is level, the bricky tool will lay a perfect bed of motor for each course of blocks. https://www.amazon.co.uk/dp/B0083LQXDG/ref=cm_sw_r_cp_apa_i_TSj.FbYYF40MA?_encoding=UTF8&psc=1

That's interesting, Thanks.

Hi, will be 150mm deep trusses, sarking and water proof membrane under slate, Not planning to use loft, at moment but would have potential to provide extra space/ rooms at some point.

Hi, I have an insulation question, hoping to start my Icf bungalow build next year, was planning to spray icynene inside of slated roof, around a 220 sqm roof was quoted £7000,but have now thought I could save quite a bit by using 140mm celotex between trusses and foam them in place for a good seal. Is this almost as good as spray insulation? Thanks.

Thanks very much @newhome, That's great information for me, am going to phone them straight away, that's a significant saving over SSE.

Have a similar situation myself have Two meters THTC from SSE, problem is one meter is called a variable rate and is specific to SSE (for the heating side of usage), and when I go on comparison websites no companies are able to supply due to meter type they say. Asked for a single meter to be fitted as it would work out cheaper with another supplier due to SSE high prices, but have not heard back probably due to covid.

Hi, Maybe this would work on damp concrete surface. https://www.wickes.co.uk/Ka-Tanking-Slurry---Grey-12-5kg/p/139057

Good to get some prices, you might want to include hire of a concrete pump truck, another Icf company worth a check is JUB. There blocks come with external wall insulation included in the block, so no need to fit after, that's what I am planning to use next year. Check out @Simon R.

Yes the quote I mentioned earlier, included two site visits and the job, approximately 70 miles from nearest available screed.

Thanks for your reply its helpful, so have to have a think, still waiting on another quote for liquid screed.

Hi, Have to decide on how to finish the floor, not started the build yet so just checking things, had one quote for liquid screed 50mm,145sqm floor, £3,700 ex vat. Don't have anything to compare it to but thinking concrete would be better deal.

I think there could be a cost saving in using 100mm concrete as finishing screed on top of under floor heating, compared to 50mm liquid screed. Is underfloor as effective in concrete? Will be for an Icf build.

A question about insulated raft foundations, why do some have the dpm bellow the raft and some have it inside the raft? And are the Eps rafts not waterproof anyway?

If you cut your chainsaw file in half, It's easy to sharpen your chain by putting the file in a battery drill just be sure to maintain the correct angle on the chain teeth.

Nice work,you will have top spec build by the time your finished! Well done.