What Types Of Loft Insulation Are There?
Answer:
The cheapest and most common materials are rolls of rock wool (literally, shredded rock), glass wool, or blown foam. Blown foam has to be installed by professionals but have the advantage of fully filling in the nouns. Rock wool (or glass wool) is sold in rolls in DIY stores and you can install yourself. This DIY remedy may seem ideal, but rockwool is very unpleasant to skin and eyes, so you will necessitate cover-alls and protective gear for eyes, hands and lungs, as well as (ideally) a dust extractor. With all that, you might only just want to pay somebody to lay it for you. Especially if you can find a company offering a grant to help the costs if they do the work themselves.
Other materials suitable for loft insulation are smaller number irritating to handle, but you may not be able to get a compromise to help with installation costs. The main possibilities are sheep's wool, cellulose cellulose, alu-bubble wrap, polyurethane (PUR) and polysocyanurate (PIR) boards. Sheep's wool is exactly that, a non-irritating product to handle, considered very 'green', while just as insulating (if also much more expensive) as rockwool. Celluose fibre are basically shredded newspapers with a stocky dose of fire retardents (mostly Boron by weight).
PUR and PIR boards are basically super-compressed foam in solid boards that anybody can handle and cut to size. They own a thin layer of aluminium (like foil) on at least one side to increase the insulating properties (the aluminium reflect heat back into the house).
Alu-bubble wrap is basically layer of bubble-wrap and thin aluminium. In theory the mix of air pockets and foil, if installed correctly, provides fundamentally effective insulation but at a fraction of the depth needed for it to equal the insulating properties of the other materials (typically only 5-10 cm for Alu-bubble wrap, vs. 25 cm for rockwool). Alu-bubble wrap is very popular contained by North America and it is extremely easy to work with. It sounds ideal for flat roofs and shallow roof joist.
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