This is what you need.
http://www.screwfix.com/p/ybs-superquilt-multilayer-insulation-1-5-x-10m/68120
Dont know where the 40mm comes from as its about 10mm
Ours is polycarb, we use it as a beer fridge in winter and a humungous cold frame in summer. That's probably not the solutions you're looking for but it's free and we could keep ten thousand bottles of beer cool
We had a superlite one fitted a year ago and it's been great. £10k or thereabouts including all the plastering. Really warm in the winter (we haven't bothered fitting a radiator) and cool in the summer with a velux fitted. Can't recommend it highly enough if you want to claim a room back to be able to use.
Jim, £10k... nah. I'll do the ceiling for £500 or so. We already use it all year with very little hassle so it's really just taking the extremes of temp away a bit.
Bear UK that stuff would be £400. I can get rigid board for £100 on gumtree so I think that's the winner. I can see the foil roll being easier to fit though
Just as a point consider ventilation above the insulation otherwise you get condensation forming. According to the manufacturers info the multi layer foil insulation needs a min of 25mm air gap both sides. To maintain this considering the insulation isn't rigid and therefore the gap won't be consistent I would say allow 50mm both sides. Add this to the insulation thickness and you may find its thicker overall than rigid insulation with a 50mm cross ventilated air gap above. Lack of ventilation causes all sorts of problems which happen unseen.
glasgowdan - MemberHow do you feel about the 25mm insulation eskay? Reckon it's enough? I've seen some cheap on gumtree
I think it will be fine. My aim was to keep it as light as possible whilst still offering an improvement in insulation.
I have felt the roof on days when it has had the sun on it for several hours and it is just 'warm' (the rooms would have been unbearable without it). If it insulates from heat that well it should be OK in reverse.
Just waiting to get some pvc cladding now. I have found it in 5.5m lengths so I will be able to clad the ceiling perpendicular to the beams and save having to add fixing batons between the 1.2m widths. It has been like this for a couple of months and what a difference - we don't close the doors from the kitchen to the conservatory any more as it's basically as comfortable as the kitchen now and is a wholly open and useable space for the family.
I've taken off the old conservatory light and wired up a new ceiling light, nice and close to the ceiling so it doesn't get in the way. The supply to the light was constant live, switched only at the light fitting itself (plus a master "whole conservatory" switch near the floor on the way in) so I've just put a bathroom switch next to it on the ceiling. Doesn't look TOO bad! 🙂
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