Download SPECIFICATION CHOICE MATRIX ECO

SPECIFICATION CHOICE MATRIX
ECO-HOUSE: COST KING
ELEMENT: SUSPENDED FLOORS & LOFTS
PRODUCT: ISOVER (MINERAL GLASS WOOL INSULATION)
SCORING
PERFORMANCE
COST
BUILDABILITY
SCORE
LIFECYCLE/
MAINTENANCE
COSTS
EMBODIED
ENERGY
ENVIRONMENTAL
IMPACT
PRACTICAL USAGE
BY OCCUPANT
SCORE
SCORE
(OUT OF 10)
6/10
9/10
9/10
82.5%
4/10
6/10
6/10
5/10
52.5%
TOTAL
PERCENTAGE
SCORE
68%
WEIGHTING
25%
50%
25%
0%
0%
0%
0%
ANALYSIS: Isover glass wool is manufactured from a combination of silica sand and up to 80% recycled post-consumer glass from building regeneration
projects or flat glass manufacture that would otherwise go to landfill. It is therefore claimed that Isover is one of the most environmentally sustainable
insulation products on the market. Under the BRE Green Guide, Glass mineral wool achieves an A+ rating. It can be cut with a knife or saw and comes in a
roll format for suspended floors and lofts. However, precautions need to be taken when handling mineral fibre as it can be absorbed into the body by
inhalation and prolonged exposure is considered a possible carcinogen similar to asbestos. It is said that mineral wool has a far higher embodied energy
than natural and renewable materials and it cannot presently be recycled. The product costs £2.00 per m² for a thickness of 100mm. A thickness of
270mm is required to achieve a U-value of 0.16W/m²K.