Wrong units for thermal resistance
W/m²K is the unit of thermal conductivity, not resistance. Thermal resistance units are m²K/W.
So is 1.5 actually the thermal resistance or the thermal conductivity?
This is confusing because I don't know to look for a high figure or a low one.
Looking elsewhere I think these are R values, so the units are wrong. Higher is better.
W/m²K are the units for conductivity and those are U values, generally less than one. I.e. the reciprocal of R values.
Screwfix please correct your Website.
Date published: 2017-03-05
Would this work as insulation for a plastic conservatory roof?
We have a plastic conservatory roof - if I use double sided tape to line the interior with this is it likely to make the conservatory warmer or will it just cause condensation problems?
I've used it to insulate ceilings. The answer for a conservatory roof is "yes you can". In order to prevent condensation, I put in the recommended 25mm air gap between the sheet and ceiling. I used a few 2x2 pieces of wood and stuck it using evo stick to the ceiling 45cm apart. Use a lot of Evo Stick or something similar so it will have a strong adhesion. I then pinned the sheet to these batons. Since the roll is lightweight it is sufficient to have the standard 25 mm x 38 mm strips of wood and they are durable. I find it preventing the conservatory from heating up like crazy in summer quiet apart from making it warmer in winters.
Good luck with fixing it.
Date published: 2016-12-11