Loft Insulation

Completely fireproof, non-irritant and fibre-free, ultra-lightweight Micafil has many applications. Free flowing and easy to install, it is ideal for thermal and acoustic insulation in lofts, between floors, interior cavity walls and for pipe protection.

Micafil

Exfoliated Vermiculite is well established as an excellent loose-fill thermal insulating material. Vermiculite significantly reduces the loss of heat in cold weather and keeps the interior cool in hot weather. Vermiculite is a naturally occurring mineral - easy to handle, sound absorbent, resistant to decay, fire-resistant, odourless, fibre-free and non-irritant.

The free running properties of Vermiculite make it simple to install. Poured straight from the bag, it simply flows into and over all potential heat loss areas. Cover the whole loft floor with a continuous heat trapping carpet of insulation, level off, and the job's done! Remember - there is nothing to cut, shape or fold, making it ideal protection around pipes or cables or for filling in awkward corners.

Downloads

Guide to using Micafil Vermiculite for Loft Insulation (231 KB)

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Improve Old Insulation

In many homes where loft insulation has been installed for some time, there is often insufficient fill to meet today's higher standards. In others it has deteriorated, slumped or was badly laid. Vermiculite is one of the easiest ways of improving this. It seals and covers over existing material to any depth and automatically fills gaps missing between the joists and original insulation.

Insulation Data

Thermal Conductivity:	k-value = 0.063 W/mK
Thermal Resistance:	R Value: 1.6 m2K/W per metre of insulation.
Thermal Transmittance:	U-Value: This is the overall rate of heat transfer. To correctly calculate a U-value, all layers of insulation must be included and not the vermiculite layer alone. The calculation requires the R-value for each layer (for R-value of vermiculite, see above) and also constants accounting for surface transmittance from the inner and outer surfaces (Rsi and Rso) and also for a small standard air gap (Ra). This calculation is often performed with specialist software and is not elaborated upon here.

Coverage

The simple rule of thumb is that 1 bag of Dupré vermiculite will cover 1 square metre to a depth of 10cm.

The above product information is given in good faith as accurate and reliable but is not to be taken as a guarantee. The figures provided are intended to be a guide to expected average values and should not be interpreted as a specification. Any potential applications referred to are not to be construed as recommendations. It is the responsibility of the user to determine suitability for any specific purpose.