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  • FIRST POST
    • female-diyer
    • By female-diyer 9th Aug 18, 1:21 PM
    • 1Posts
    • 0Thanks
    female-diyer
    Suggestions for real CHEAP insulation
    • #1
    • 9th Aug 18, 1:21 PM
    Suggestions for real CHEAP insulation 9th Aug 18 at 1:21 PM
    I am planning to board out my summer house and thought that it might be an idea to pop some insulation between the structure and the internal boarding. Kingspan would be great but its looking like costing over 250 to use this. Rockwool is cheaper but such a nightmare to work with.
    Can anyone suggest anything cheaper. Whilst I want some insulation its only to take the chill off during the winter if we wanted to use it (we do have use of a small heater in there when its really cold). Also I feel a little reluctant to spend a lot of money for a room that isn't really going to get used that much!!!
    Any suggestions greatly appreciated for you money saving savvy people!
Page 1
    • Hoploz
    • By Hoploz 9th Aug 18, 3:14 PM
    • 3,842 Posts
    • 3,386 Thanks
    Hoploz
    • #2
    • 9th Aug 18, 3:14 PM
    • #2
    • 9th Aug 18, 3:14 PM
    Newspaper? Old duvets or mattresses? Eggboxes? Polystyrene packaging?

    All these could be collected over time or by asking friends and family.

    .... Whether they'd be very successful or not I cannot tell!
    • PasturesNew
    • By PasturesNew 9th Aug 18, 3:15 PM
    • 65,230 Posts
    • 382,802 Thanks
    PasturesNew
    • #3
    • 9th Aug 18, 3:15 PM
    • #3
    • 9th Aug 18, 3:15 PM
    I've no idea how safe/ideal it is, but my dad used big bubble wrap in his shed about 30 years ago.
    • Davesnave
    • By Davesnave 10th Aug 18, 6:44 AM
    • 26,849 Posts
    • 96,569 Thanks
    Davesnave
    • #4
    • 10th Aug 18, 6:44 AM
    • #4
    • 10th Aug 18, 6:44 AM
    Stuffing insulation into a gap meant to contain air isn't always a great idea unless the outer layer is entirely weatherproof and/or there's a vapour barrier.

    The former not-too-practical owner of my property stuffed rockwool into the gap formed when he lined his shed with plywood. It did not end well, though he wasn't around to see the end.

    Maybe 25mm polystyrene inserted with something to brace it just clear of the outer wall and base would be OK and not too expensive?
    Last edited by Davesnave; 10-08-2018 at 7:02 AM.
    "We won't get fooled again...."
    • ComicGeek
    • By ComicGeek 10th Aug 18, 8:12 AM
    • 339 Posts
    • 269 Thanks
    ComicGeek
    • #5
    • 10th Aug 18, 8:12 AM
    • #5
    • 10th Aug 18, 8:12 AM
    If you're not going to use the heater much, why bother trying to insulate the roof. Without doing the floor and walls as well, and making sure that it's more air tight, I can't see how a little bit of cheap insulation is going to make any difference.

    You might save yourself a few pence of electricity each time you use it, so how many times would you need to use it before you make the money back? And as it's not a structure that is intended to be insulated, you may spend much more maintaining/replacing it in the future.
    • dboswell
    • By dboswell 10th Aug 18, 8:18 AM
    • 306 Posts
    • 66 Thanks
    dboswell
    • #6
    • 10th Aug 18, 8:18 AM
    • #6
    • 10th Aug 18, 8:18 AM
    Gumtree - I got rid of quite a bit of excess insulation - kingspan, rockwool from a previous extension. Happy for someone to take it for free.
    • Davesnave
    • By Davesnave 10th Aug 18, 9:16 AM
    • 26,849 Posts
    • 96,569 Thanks
    Davesnave
    • #7
    • 10th Aug 18, 9:16 AM
    • #7
    • 10th Aug 18, 9:16 AM
    If you're not going to use the heater much, why bother trying to insulate the roof. Without doing the floor and walls as well .
    Originally posted by ComicGeek
    So far as I can see, OP didn't suggest she'd only do the roof.
    "We won't get fooled again...."
    • tonyh66
    • By tonyh66 10th Aug 18, 11:37 AM
    • 1,291 Posts
    • 896 Thanks
    tonyh66
    • #8
    • 10th Aug 18, 11:37 AM
    • #8
    • 10th Aug 18, 11:37 AM
    have a look at jablite insulation, its just polystyrene but much cheaper than celotex. As said earlier you need to leave a gap between outside wall and insulation.
    • armchaireconomist
    • By armchaireconomist 10th Aug 18, 12:27 PM
    • 342 Posts
    • 418 Thanks
    armchaireconomist
    • #9
    • 10th Aug 18, 12:27 PM
    • #9
    • 10th Aug 18, 12:27 PM
    Rockwool? I've just installed some of the semi-rigid RWA45 slabs and they're no bother atall. Very little itch and easily cut to size with a long bladed kitchen knife.
    • flashg67
    • By flashg67 10th Aug 18, 6:12 PM
    • 2,658 Posts
    • 1,739 Thanks
    flashg67
    polystyrene packaging wrapped in bin bags to keep out moisture?
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