Does anyone have any recommendations as to what insulation material to use and where to get the netting from?
14 Jan 2010, 11:27 AM
I see that the link did not open, but try this instead...,
then click on suspended timber floor
There are some good images, and the neting is called polypropylene netting, available at most DIY stores or farming outlets
14 Jan 2010, 11:35 AM
Hi Marc sources of netting as Fridiheim suggests - the stuff used for fruit cages or other agricultural purposes.
14 Jan 2010, 3:27 PM
the Knauf suggestion is the one I would have made.
15 Jan 2010, 12:59 PM
If I insulate under the floor on the ground floor (I don't have a basement/cellar) do I need to contact building control?
15 Jan 2010, 2:51 PM
Well, marct, if you dig around the foundations then a structural engineer should be asked for advice.
15 Jan 2010, 5:06 PM
The reason for asking was I read something about fire safety. Trust me I won't be digging around any foundations. :)
15 Jan 2010, 11:01 PM
Normal quilt and strawberry netting is what I use.
I always put a vapour barrier on top of the joists and trap it behind the skirtings for air tightness.
18 Jan 2010, 10:14 PM
I have the netting and some B & Q loft insulation. I plan on giving it a go this weekend.
Thanks for the advice everyone.
18 Apr 2010, 10:43 AM
Ive got a similar job on the go at the moment. Ive put all of the insulation under the floor via a htach and am going to fix it from below. The void is about 500 deep so it is possible to crawl about. I laid a new wooden floor over the existing boards a year ago and sealed all of the joist between the old tongue and groove with anything I had to hand. The reduction in drafts had an immediate effect. Just the insulation to do now. Not looking forward to it.
23 Apr 2010, 4:04 AM
For insulating truss floor systems, it's better to install netting or foam board insulation to the underside of the floor trusses. Then, fill the space created between the netting or insulation and sub-floor with loose-fill insulation.
24 Apr 2010, 2:32 PM
I'm building a new timber frame bungalow myself and need to insulate the low pitch/flat roof, floor and walls. Where do I find a cost comparison v thermal efficency table. I'm currently looking at rockwool v glass in rolls. Could the roof covering be an insulated metal sheet? The house is built on 1 metre high posts and I can get to the underside of the floor. I plan to finish the underside with 5mm ply to hold the insulation. The 1 metre supports will be infilled round the sides to make the underfloor space warmer and dry. Do I need to cover that final underside ply with say a polythene sheet to keep out moisture? The build is in Brittany and build regs. are fairly relaxed! Any help/suggestions will be most welcome.
1 May 2010, 5:18 PM
I am just getting the plans drawn up for a house that I intend to be concrete free, I also want it to be almost self heating using the sun to warm a good thermal mass. It will be built from hemcrete but I, and the architect, are puzzled about the structure of the floor and what we put the timber frame on. Any tips would be very welcome. Thanks.
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