Temperature loss overnight

With the outside temp dropping to -3 overnight my main living area drops from 20 to 16° over 7hrs

I don’t use my gas central heating just the log stove so the rest of the house is probably 13 ° dropping to 11 ° in the kitchen which is furthest away from the heat source

I’m guessing the heat is probably lost mostly through the concrete floor with no insulation just carpet, underlay and  20mm double glazing

I do like cool temp bedroom upstairs and it’s probably 12°

How much heat does a current new build house lose with kingspan under the floor slab and 6″ timber kit build ?

House is 63 years old brick to brick cavity wall with no white foam

Worth getting hold of a thermal image camera/phone to see where your losing heat?

120 year old house here, even the insulation ****** out heat loss. Were probably being watched by Martians as an example of a poorly insulated home.

is this a troll post?

Why would you buy a load of “kingspan” if your house is about to fall down?

We’re in a recently built house, insulated floor slab, timber frame, ASHP and UFH – despite being 500 miles further north than our previous Edwardian house of similar size; energy price inflation and not having gas our monthly energy bills are much the same. The house is a lot warmer too – it maybe drops a degree or two overnight, but it’s not cold.

20 to 16 overnight doesn’t sound desperately bad, we are currently renovating and our main room goes 20 to 12, possibly single figures if minus outside. We have no insulation other then 300mm in the loft. Currently we only have a wood burner for heat so are raising the temperature up every evening to 20 in one area only.

From previous experience in our last house, we made a 2 degree difference by incremental gains. So underfloor insulation, draft proofing, better curtains. That took us from 20 to about 17/18 by morning.

better curtains

Living in Spain, where every house has proper external blinds, you have to wonder why they haven’t caught on in the UK… Decent thermal blinds make a massive difference, and you actually get a properly dark bedroom at night! (And there’s nothing to stop you getting curtains, too, although at that point they’re not really necessary).

How much heat does a current new build house lose with kingspan under the floor slab and 6″ timber kit build ?

Calm down Matty maybe a bit technical that question for you

How much heat does a current new build house lose with kingspan under the floor slab and 6″ timber kit build ?

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< s t r i n g >>>>>>>>>>>>>>>>>>>>>>>>>>>>>

How much heat does a current new build house lose with kingspan under the floor slab and 6″ timber kit build ?

How long is a piece of string?

There are various energy standards – both in different UK nations and whether developer has built to highest standard by choice or basic standard as required, is the new build this year or 5 years ago. Then there is ‘as built’ compared to ‘as designed’ – some are shit at doing insulation and airtightness properly. Then you have UK location and local microclimate, solar gain etc. Then of course you have users – half of whom these days do not understand curtains, moisture levels etc etc.

I too am wondering about this – we are kicking around a small downsize and newer house. The developers make laughable claims over energy efficiency and renewables, but they just do not stack up.

That said, I am intrigued to find out how our current, leaky heat, 1970’s semi would compare to a similar sized ‘A rated’ new build with some solar panels…

We’re in a 1850s stone house. Double glazed 30 years ago, and some insulation in the loft space.  But otherwise absolutely no ‘modern’  means of insulation hard flooring over bitumen that sits on top of concrete and stone floor downstairs, carpets upstairs.  Walls 2-3ft thick so no cavity to fill, and the place is too small to realistically dry-line (as its too hard to swing a cat as it is).

Ours would typically drop fom 19 to 16.5 overnight downstairs (8 or 9 hours from when the central heating goes off).  (Similarly don’t want a hot house to live in – 19 or 19.5C for us is absolutely fine.  20 and Over feels too hot for me.

TBH that loss sounds fine by me. Our heating goes off early evening around 6pm (17-18c max) and it takes an age to cool down upstairs. I sleep without covers on most of the year !

That overnight temperature drop sounds similar to ours. When it’s minus single digit outside we go from 21c to 16c over night. We’re in a 1930s detached house, with 30cm of loft insulation and double glazing, but no other insulation.

I keep wondering about getting the cavities insulated, but you hear so many horror stories about damp problems in older houses that I’m not sure it’s worth the risk.

A 4 degrees temperature drop overnight in a freezing ambient temperature isn’t that bad. I’ve seen my modern B rated house drop 2 degrees overnight on a freezing cold night. We have insulation under the concrete slab, insulated timber frame, really thick loft insulation and double glazing.

I do notice cooler air at the windows so I think I could reduce my temperature drop by fitting fully insulated curtains and blinds on every window. I only have them on some. I think I’ll look for thermal velux blinds too.

+1 for not being sure you have a problem there mate.

Are you feeling too cold?

I live in a recently built EPC-B house and 20C to 16C in the living room overnight doesn’t seem particularly unusual to me. Though the biggest loss of heat is the letterbox on the front door because it’s a stupid custom job that I’ve not been able to source a replacement for without buying a new door.

I can’t help with the overnight temperature drop but last year we used 5.2 mWh & generated 8.2 mWh.
‘A’ rated house, insulated raft with a timber frame with 300mm blown cellulose, 3G windows, very airtight, MVHR, 24 solar panels. The house is in west Cornwall (so frost is rare), 175m2 or so & kept at a constant 20/21°.

When my flat gets to about 17 or 19 degrees Fahrenheit I stick the heating on, bringing it up to about 65-70F. But I’ve never felt the need to have the heating on during the night.

Sounds better than mine. We leave the heating on at night now around 12ºC and it often kicks in. So that’s going from about 20 to 12 before the night is.

(Project insulation is in the beginning stages of progress).

A good winter duvet makes all the difference. Then a big cup of tea/coffee in the morning while waiting for the radiator to heat up.