ABOUT DOUBLE & SECONDARY GLAZING

Double glazing consists of two or more layers of glazing separated by a spacer along the edge and sealed to create a stable air space between the two sheets of glass. This provides better heat and sound insulation than standard single-glazed windows. The air space between the layers of glass may be filled with air but an inert gas like argon provides better insulating performance. Argon has an atomic mass which is much more than nitrogen and oxygen. As a result, argon atoms move slower than nitrogen and oxygen. This reduces convection and decreases the energy transfer between one side of the glass and the other. Typically the spacer is filled with desiccant to prevent condensation and improve insulating performance. Evacuated glazing is double glazing where the air is removed altogether, creating a vacuum.

Secondary glazing is a form of double glazing in which a second set of frames and glass in fitted to improve sound and heat insulation.

SPONSORED LINKS

LEADING UK SUPPLIERS OF DOUBLE GLAZING & SECONDARY GLAZING

Double Glazing Shop Double Glazing Shop supplies a wide range of double glazed windows, including double glazed sash windows, double glazed patio doors, upvc windows, trade windows, and conservatories. It carries over 16 profile window systems, with more than 60 combinations of windows.

Duration Windows Secondary Glazing is a leading supplier of UPVC and aluminium doors and window systems, including secondary glazing. It supplies Tilt Back Vertical Sliding Secondary Windows, and Horizontal Sliding Secondary Windows. The Duration Windows website contains an online Estimator for secondary glazing.

Everest Double Glazing is a leading UK manufacturer of double glazing. The Everest range of double glazing products includes double glazed windows and doors, and conservatories. Everest also supplies roofline products (guttering, cladding soffits etc), garage doors, security systems (Alarms, CCTV), timber sash windows, flat roofs and driveways. Everest is a founding member of the Glass and Glazing Federation trade association.

Jeld Wen UK is a leading supplier of double glazed windows in timber and UPVC. Low emission glass can be used, to provide further thermal insulation. Finish of the UPVC windows is white or plastic wood effect, in light or dark brown.

Zenith Staybrite Double Glazing. Zenith Staybrite is a large supplier of double glazing units for windows and doors. Part of the Bowater Group, it supplies more than two hundred thousand UPVC windows and doors each year. Zenith Staybrite products include decorative double glazing, with coloured glass and leaded designs.

DETAILED INFORMATION RESOURCES ON DOUBLE GLAZING

We recommend the following professional construction directories, which include manufacturers' specifications and CAD details: Barbour Compendium at www.barbourcompendium.co.uk, RIBA Product Selector Plus at ww.productselector.co.uk, ASC Bricsnet at www.ascinfo.co.uk, Building Products Index at www.bpindex.co.uk, British Board of Agrément at www.bbacerts.co.uk, British Standards Online at www.bsonline.bsi-global.com.