Can you lay loft insulation over joists?
Can you lay loft insulation over joists?
Loft insulation is a barrier of material within your roof space. It can either be laid between the joists (the horizontal beams along the floor of your attic) or the rafters (the angled beams that support the roof).
What is the best thickness for loft insulation?
The Government say that you cut your energy bill by up to 20% through effectively insulating your loft. The recommended depth for loft insulation is 270 millimetres for glass wool, 250 millimetres for rock wool or 220 millimetres for cellulose.
What is the best form of loft insulation?
If your loft is damp, slab insulation is a great choice. It’s easy to fit, water-repellent and breathable so you won’t get rot or mould. Planning to use your loft for storage? Going for rigid insulation boards could save you time and effort, as you get boards and insulation in one.
Should loft insulation go to the edges?
Insulation should be continued right to the edge of the ceilings but it shouldn’t block the eaves’ ventilation. You must also avoid laying insulation over recessed light fittings or cables in the loft space that may overheat.
What is the minimum thickness for roof insulation?
As stated in Approved Document L, loft insulation should be at least 270mm thick, which is the requirement for newly built properties. If you’re looking to refresh the insulation in your loft space, you may find you have as little as 25mm, which was the recommended amount in the 1980s.
Can kingspan be used as loft insulation?
Using rigid insulation board as loft insulation Some people may prefer to use rigid insulation board to insulate the loft space – for example Celotex or Kingspan – the process is pretty similar to above, although you will need less depth to achieve the same insulation levels (than mineral wool).
Can I put too much insulation in my attic?
It is possible to over-insulate your house so much that it can’t breathe. The whole point of home insulation is to tightly seal your home’s interior. But if it becomes too tightly sealed with too many layers of insulation, moisture can get trapped inside those layers. That’s when mold starts to grow.
Should you remove old loft insulation?
In most circumstances removing your old insulation isn’t necessary and it can actually be quite beneficial to leave it. This is as most insulation will retain its thermal properties so leaving it in place will mean that you continue to benefit from it whilst also having an additional layer of insulation on top!
Can you put insulation in Eves?
Don’t pack it in: squashing insulation to fit the space seriously compromises its effectiveness. Also avoid pushing the insulation into the eaves to keep ventilation paths at the edge of the roof well aired and roof timbers dry.
How thick should my loft insulation be?
250 to 270 mm
The recommended depth of blanket style insulation (glass or mineral wool) for a loft is 250 to 270 mm. If you already have insulation, but it was put in some time ago, it is worth checking the depth, as only a few years ago the recommended depth of insulation was 200mm, and before that it was as low as 100mm.
What is blown in and loose fill insulation?
Loose-fill materials can be blown into attics and finished wall cavities. For existing buildings that were not built with insulated cavities, a fibrous material such as cellulose insulation or glass wool is blown into the cavity through suitably drilled holes until it fills the entire wall space.
What’s the difference between micafil and regular loft insulation?
Someone asked us this week whether or not Micafil loft insulation is worth installing. Micafil is different to most loft insulation in that it is loose fill – i.e. instead of coming in a big roll, this insulation comes as small particles in bags which can then be poured into the required spaces.
What kind of insulation is thermofloc made of?
Thermofloc is a loose fill premium cellulose based insulation made from recycled/unmixed newspaper combined with a mineral fire retardant manufactured to meet the highest quality standards that offers a sustainable and cost effective way to insulate horizontal surfaces such as your loft or floors.
What kind of material is used for loose fill insulation?
Loose-fill insulation consists of small particles of fiber, foam, or other materials. The most common types of materials used for loose-fill insulation include cellulose, glass wool, and rock wool. Cellulose insulation is made from recycled paper products, primarily newspapers and has a very high recycled material content.
