No proof = you need building regs or someone to sign some paper? Or photos will suffice?We did
Dead easy we just used that 12cm thick polystyrene slabbbig, jablite?
I did lag the plastic pipes as well haha
AS weve no proof tho it doenst show on EPC
Cant go pullign the floor up as we replaced the floorbaords with oak flooring lol
Is it really worth insulating under ground floor (1900s terrace)?
- Thread starter Scam
- Start date
I think the blue stuff is essentially a breathable mebrane/roofing membrane. It works like a hammock to hold the insulation roll in place, as if it dops down it wont be working and will likely get damp. The breathable membrane will allow air to circulate under the joists should any moisture get into the void. You could maybe skip doing it if you used PIR/Polystyrene insulation, but you'd need to get a really tight fit between the joists and there's no garantee it wont fall down.
Slight update. The local carpet shop we'd gone to for our loft/stairs thought they had laid the existing carpet, so we asked them about the downstairs flooring. They looked up the old owners, sure enough they laid the flooring downstairs too. Even better, what we have is still current and supplied. Long story short even if our builder can't bodge it from the flooring taken out of the bathroom, we'd be able to get them to sort the flooring where our walls are coming out in the kitchen. For that reason we really don't think we can justify the cost of taking it all up to insulate and re-floor. It'd be minimum £4k I reckon for the kitchen/dining only and that would leave us with different flooring in the lounge and hallway. Unless of course we opt for the same flooring again which wouldn't be our choice, and also makes it seem even more silly to spend £4k+ just to insulate and end up with the same flooring!
Associate
I used some butterfly netting then insulated under the floor of the living room, along with cavity insulation it's made a massive difference! Looking forward to winter..
Any pics? Interested in a similar thing.
Soldato
Still think you are mad and will live to regret it when your floors ar cold to stand in and energy prices keep going north. Basically you are polishing the outside of your house for show and ignoring the important bits! I would also have no faith in someone ‘patching up’ the floors when the walls come down to an acceptable standard particularly with a floor you already admit isn’t what you would choose! Stick what you can’t afford now on an interest free credit card you heating bills and warm feet will thanks you!
Well, we don't recall the floors ever being cold even when the house was. Did you not read above? Completely replacing all roofs, insulating, felt, new tiles etc. and insulating the first floor, and kitchen rear external walls I wouldn't call just "polishing". That's going to make a very real difference, oh and we're going from crappy plastic windows and original sash window in the dining room to brand new windows and french doors too. As for patching up, we'll leave it for the builder to decide if he can do a good enough job but I suspect he will suggest we get the flooring company back to do it properly which is fine. I'd have no issue spending <£1k to sort it.
Got pics of when we did it somehwere, wonder if they woudl accept that.
No chance of pulling floor up like, T+G and hidden nailed oak floorboards haha
Mind you I was in BnQ yesterday and had a quick neb...
Must've been the 10cm deep stuff we used, I remember the delivery and thinking wtf am I gonna do with all this lol
pretty sure we paid about 12quid per slab... £51 per board in BnQ!
Associate
Hopefully these give an idea, don't have any better pics.
Used a hammer tacker to staple some netting that was cut to the right size already, to the underside of the joist (be warned the tacker does enjoy jamming for fun when using it upside down just to annoy you)
I have some dwarf walls, so had to split it into 3. One section i took up floorboards and pushed the insulation through. Worked OK.
But i think the 2nd section was quicker, did everything from underneath, didn't take any floorboards up.
We'd just had the room decorated so it was totally empty, knew if this insulation wasn't done...then it would never be done!!
Joist spacing was all over the place, so some sections didn't need any mesh.
I purchased 100mm thick sheep's wool for my 1900's semi., Got about 68m2 with a roll of netting for £930 in 2019, i then took what felt like two years laying it from underneath, mostly because it was such a small gap at the front of the house.
The understairs hatch has say 3-4 ft bug the front was down to face being in the dirt / joists and really struggling with moving.
Tbh i should have went with 200mm but didn't.
The understairs hatch has say 3-4 ft bug the front was down to face being in the dirt / joists and really struggling with moving.
Tbh i should have went with 200mm but didn't.