order by phone


richard williams deliveries

Credit / Cash Account

credit account

Opening Hours

7:30am – 5:00pm
7:30am – 5:00pm
7:30am – 5:00pm
7:30am – 5:00pm
7:30am – 5:00pm
8:00am – 12:00pm
We're currently closed.
Good Friday Closure 14th Apr 2017 – 14th Apr 2017
Bank Holiday Monday Closure 17th Apr 2017 – 17th Apr 2017

Loft Insulation

Pics For Website198

Richard Williams stocks Knauf Loft Roll 44 as a loft insulation. Earthwool Loft Roll 44 is a flexible low density glass mineral wool quilt which is lightweight, flexible, resilient and non-combustible. The rolls are 1140mm wide and partially perforated to produce either 2 rolls 570mm wide or 3 rolls 380mm wide. It is a lightweight and economic insulation quilt with a thermal conductivity of 0.044W/mK.

Earthwool Loft Roll 44 is primarily used for the thermal insulation of pitched roofs at ceiling level, it can also be used to thermally insulate floors. When used at ceiling level it is usually laid in two layers, with the first layer between the joists and the second layer over, and at right angles to the joists.

Thickness (mm) Thermal Conductivity (W/mK) Thermal Resistance (m2K/W) Length (m) Width (mm) Area per Roll (m2)
200 0.044 4.50 5.20 1140/2×570/3×380 5.93
170 0.044 3.85 7.03 1140/2×570/3×380 8.01
150 0.044 3.40 8.05 1140/2×570/3×380 9.18
100 0.044 2.25 12.18 1140/2×570/3×380 13.89

For further information on loft insulation or to discuss your delivery options, please contact your local branch at Llandudno Junction or Ruthin North Wales.