insulation

  1. C

    Insulation of exposed wooden floor FROM BELOW

    Evening all, Firstly, Happy New Year! I’m planning on insulating underneath the floor boards in my living room. 1900s terraced house so adequate crawl space to do from below, plus I don’t want to damage the floor by lifting up. From research I understand best practice is a vapour barrier...
  2. oursurveysaid

    Insulating Loft Futureproofed for Converting

    Hi. I need to increase my loft insulation but would like to have the loft converted in a couple of years. What would be the most efficient way to do this, reducing waste if it’s converted? It’s currently boarded, which is useful, so I think I’d rather insulate at roof level. Would PIR boards...
  3. J

    Insulation, metal roofing and moisture

    Hi everyone, I'm building a heated garden office with a box profile metal roof. This space will be heated during winter months. I've got 145mm rafters with glass wool in-between. 15mm OSB ontop of the rafters, then Breathable roofing membrane. I've then fixed the metal roof directlu ontop of...
  4. A

    Sealed loft insulation bags

    Hi, Can't seem to locate this product:- ""Knauf Space Blanket" that was on the market at some point https://www.diy.com/departments/knauf-space-blanket-loft-insulation-roll-l-4m-w-1-14m-t-200mm/182138_BQ.prd Can anyone point to a place where I can buy them or similar? thanks Adam
  5. cwhaley

    Floor Poured before BCO Inspection

    We've got the shell of an extension at the back of our house, completed by a builder. Roof, walls, concrete floor, etc. -- just no windows or doors. Throughout the build communication was absolutely rubbish with me constantly having to chase things up, and taking time off work for no-shows...
  6. R

    How to spray expanding foam into tight gaps?

    Hello all I hope you can help me. I do a little DIY, but I have a lot to learn. The current cold snap has made me realise how leaky my house is and I am on a mission to try and patch it up. I have noticed in our kitchen that there is lots of cold air coming in between gaps between the floor and...
  7. KanielDemp

    Heavy Loft Condensation

    Hi all I hope you're all keeping well This is my first post and I'm hoping to get some advice on a case of extreme condensation in my loft. I've read the various threads I could find, but wanted to get your take on the solutions I've been offered by several roofers before taking the plunge. I...
  8. 0

    Flat roof on single storey extension has no insulation

    Hi, I've just had a steel put in to remove a pier between the kitchen and a single storey extension. I've been in the property a year and always thought the kitchen got far too cold. Turns out, its because there is no insulation in the flat roof on the extension. This was all signed off with...
  9. I

    Insulation and ventilation

    Hi everyone, I'm trying to insulate the gap between the sunken gas box that depresses into the wall outside and the inside of the property. It looks like whoever did it smashed the bricks and so there is a void.... Can you advise how to do it. Thankyou The first 3 pictures are under the kitchen...
  10. O

    Wall insulation with Rockwool

    Original plan was to use Kingspan but current pricing is a bit ouch so I'm looking at building a 3 x 2 framework parallel to the full brick solid outside walls then filling the void with Rockwool (got a lot of timber and rockwool so those price hikes aren't a big worry). Question- am I ok with...
  11. J

    Using tile backer foam board for internal walling of single skin block wall.

    I am curios if this is doable or would work. I have a small single skin block shed. Now I am wondering if you can use foam tile backer board like Q Board dot and dabbed to the wall as both the vapor barrier, insulation and paneling without using plasterboard? This panel is meant for wet rooms...
  12. commando3

    Garden Room insulation.

    Im currently building a garden room but I have a question about the insulation between the wall studwork. Im using 4 x 2 cls24 timber. If I use 100mm pir boards for insulation how do I go about the electrical wiring channels for the cables and sockets? Can i cut into pir boards? Or, should I...
  13. N

    Loft boarding with 400mm insulation

    Is it possible to board a loft that has 400mm of insulation? The joists are 120mm high. LoftZone would raise the boards to 404mm, leaving only a 4mm air gap instead of 50mm. Loft Leg XL would raise it to 425mm, leaving only a 25mm air gap. Could I put a block of wood between the joists and...
  14. leaf17

    Soundproofing workshop

    Hi guys, Hoping for some advice on how I can retro-soundproof my wood workshop. I say soundproof, but what I really mean is limit the sound to a level where my neighbours don't complain! As you can see on the images below, it's a very simple timber-frame shed. It was built to a cost and I...
  15. N

    Conservatory Roof Insulation

    I've moved into a place with a first floor (don’t ask) 3m x 6m conservatory. It’s brick/breeze block up to the timber windows which are double glazed in a timber structure up to the timber rafters. It’s got a polycarbonate roof. My problem is the usual one with conservatories – being either too...
  16. L

    Insulating a sloped roof on 1st floor - sanity checking

    Hey everybody, ~1950's two storey hip roofed house, with part of the roof extending down through the 1st [UK] floor: The original rafters are suprisingly small (45 x 70mm), despite some of them going nearly 8m to the apex. The main hip section of the house has been insulated for a while, but...
  17. M

    Insulating the roof of an old house

    Hi, I'm looking at buying a small house the roof of which has been re-tiled some years ago with concrete tiles but there is no felt under the tiles. It's a storey-and-a-half house so the upstairs floor is in the roof space/rafters, and I want to insulate this roof space to use as bedroom space...
  18. Gary 41

    Loft insulation - over joists or cut-to-fit?

    Hi, New member with an odd query. I am having to do my own loft insulation in my apartment building on the top floor. (*I have permission from building owner). The professionals won't do it because they cannot install a hatch in between the joists (too small), and the only access point is...
  19. pabutterworth

    Insulate under raised garden office

    Hi, I have an existing garden office thats raised from the ground. It's reasonably well insulated in the walls but the floor gets very cold. The rafters underneath are accessible, and I was wondering how I could insulate from below. Would I have issues if I cut some insulated panes and pushed...
  20. P

    Cavity

    Hi all, I wonder if anyone can advise. We bought a 1930s property and decided to sleeve off/bridge the airbricks that were already there to ventilate the underfloor. I heard that the cavities need ventilation too? Will bridging the airbricks afect the cavities? We are planning on installing...
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