Glass in Glazed Roofs

Primary manufacture

• Glass may be manufactured as:
– Basic glass, (Soda Lime Silicate Glass) – Borosilicate Glass

● Less expansion, More viscosity in high temperature

– Low iron (white) glass,

– Body tinted glass;

• This has a through body tint achieved by the addition of metal oxides to the melt,

– Coated
• Coatings are deposited on to the hot glass,

• They are called hard or pyrolitic coatings,

• They may be low-e coatings, low reflectance coatings, self cleaning coatings, coloured coatings.

Annealed glass

The glass produced by primary manufacture is annealed or basic glass,

MTCP-1-1 types of cladding-a H [Compatibility Mode]

Float glass

•   Flattest with least distortion
•   Large production runs
•   95% of glass production
•   Thicknesses 3, 4, 5, 6, 8, 10, 12, (15), 19 and 25 mm
•   Standard sizes up to 6 m x 3.2 m.

Cast (rolled) glass