St Johns P.School
Benwell, Newcastle

St Bedes School
Peterlee

Stokesley School
Stokesley, N Yorkshire

Waygood Gallery
Newcastle upon Tyne

Glazed Lantern Light
Christies Auctioneers, London

Proctor and Gamble Walkway
Benton, North Tyneside

Newburn Manor Nursery
Newburn, Tyne and Wear

Craigshill
Livingston, Scotland

Reent Farm Primary School
Gosforth, Newcastle Upon Tyne

Priorsford Primary School
Peebles

Grange Childrens Centre
Gosforth, Newcastle Upon Tyne

Pyramid Rooflight
Surrey

Glazed Rooflights
Peterborough

Entrance Canopy and Buggy Store
Wheatley Hill, County Durham

Pyramid Rooflight, Thornthwaite
Thornthwaite, Lake District

Dunstanburgh Nursery School
Newcastle Upon Tyne

Denton Burn Playgroup
Newcastle Upon Tyne

Brotton Comunity Centre
Brotton, near Saltburn

Lantern Light
Newcastle Upon Tyne

Pyramid Rooflight
Oxshott, Surrey

Stanley Childrens Centre
Stanley, County Durham

Glazed canopy
Middlesbrough

Mowden Hall Rooflight
Darlington

Green Tree Nursery
Newcastle Upon Tyne

Westerhope Nursery
Newcastle Upon Tyne

Shieldfield Nursery Canopy
Newcastle Upon Tyne

St Josephs RC School
Stockton

St John Bosco P.School
Sunderland

Barrel Vault Rooflights
Newcastle Upon Tyne

Octagonal Rooflight
Surrey

Technical Information

Fire

The thermoplastic glazing materials have been tested in accordance with the relevant British Standards with the following results:

Test
Polycarbonate
Standard Acrylic
PVCu
BS 2782: 1970 Method 508 A
Flame retartant
Not flame retardant
Flame retardant
BS 2782: 1970 Method 508 D
Very low flammability
Flammable
Very low flammability
BS 476: Part 7: 1971
Surface spread of flame (or 1987)
* Class 1 (see note)
* Class 3
* Class 1
BS 476: Part 8: 1972
Fire resistance of elements of building construction
** Less than 1/2 hour
** Less than 1/2 hour
** Less than 1/2 hour
BS 476: Part 3: 1958
External fire exposure roof tests
AA
DDX
Not applicable
Building Reg. Appendix A
Approved Document B
TP(a)*
TP(b)*
TP(a)*

* when tested in 3mm thickness and over ** Assumed results
Note: Materials which achieve class IY can be regarded as having an AA designation

Weight

3mm Polycarbonate - 4.5kg/m2
3mm PVCu - 4.5kg/m2

Relative Impact & Breakage Resistance

6mm Georgian Wired Glass
3mm PVCu - approximately 50 times stronger than the glass
3mm Polycarbonate - unbreakable within the limits of the test comparison

Thermal Transmission (U Value)

Polycarbonate Single Skin - 3mm 5.4w/m2/degree C
Polycarbonate Double Skin - 3mm 2.6w/m2/degree C

Light Transmission (Based on 3mm)

Polycarbonate clear - approximately 82%
Polycarbonate opal - approximately 50%

PVCu

Clear - approximately 85%
Opal - approximately 72%

Cast Acrylic

Clear - approximately 92%
Opal - approximately 78%

All Astrofade rooflights can be supplied in bronze to control solar gain and glare

Material
Light Transmission
Total Solar Energy Transmission
Bronze Polycarbonate
50%
55%
Bronze PVCu
60%
69%