Superglass Superwhite 42 is a glass mineral wool blown loft insulation with a water repellent additive to enhance it resistance to moisture. Installed by professional insulation contractors to a minimum density of 16kg/m3 the product will have a declared Lambda 90/90 value of 0.042W/mK.
Superglass Superwhite 42 is designed specifically to provide thermal insulation in new or existing loft/cold roof spaces of up to 500mm. Blowing the insulation can be a better solution particularly in hard to treat lofts, where conventional rolls can’t be easily installed.
Most mineral wool blowing machines can be used to install Superwhite 42 under the supervision of a professional company.
| Declared Thermal Resistance Rd (m²K/W) | Minimum installed thickness to achieve declared thermal resistance (mm) | Minimum installed thickness declared (mm) | Minimum Coverage (kg/m²) | Minimum Bag Usage per 100m² |
|---|---|---|---|---|
| 2.00 | 84 | 85 | 1.4 | 8.1 |
| 2.50 | 105 | 105 | 1.7 | 10.1 |
| 3.00 | 126 | 130 | 2.1 | 12.1 |
| 3.50 | 147 | 150 | 2.4 | 14.2 |
| 4.00 | 168 | 170 | 2.7 | 16.2 |
| 4.50 | 189 | 190 | 3.1 | 18.2 |
| 5.00 | 210 | 210 | 3.4 | 20.2 |
| 5.50 | 231 | 235 | 3.7 | 22.3 |
| 6.00 | 252 | 255 | 4.1 | 24.3 |
| 6.50 | 273 | 275 | 4.4 | 26.3 |
| 7.00 | 294 | 300 | 4.8 | 28.3 |
| 7.50 | 315 | 315 | 5.1 | 30.4 |
| 8.00 | 336 | 340 | 5.4 | 32.4 |
Superwhite 42 has a declared thermal conductivity of 0.042W/mK when tested to BS EN 14064-1: 2010 (Lambda 90/90).
All Superglass products are deemed non-combustible and have a fire classification of A1 (the highest possible rating) when tested to BS EN 13501-1 Reaction to Fire.
All Superglass products are manufactured from up to 84% recycled glass which would otherwise go to landfill.
All Superglass products are manufactured in accordance with BS EN ISO 9001:2015 – Quality Management Systems (QMS).
Manufactured in accordance with:
All Superglass products are non-hygroscopic, will not rot, degrade or sustain vermin and will not encourage the growth of mould, bacteria or fungi.
All Superglass products offer negligible vapour resistance allowing vapour to pass freely through the insulation.
All Superglass products are easy to handle, cut and install. The products are supplied compression packed in polythene to provide short term protection only. For long term protection, the product must be stored indoors or under a waterproof covering in order to protect from weather damage. The products should not be left permanently exposed to the elements.
