How should aluminium frames be protected before fixing?

Surfaces in contact with masonry should be given a thick coat of alkali-resistant bituminous paint to prevent corrosion.

When is the correct time to carry out glazing work?

Glazing should be done in the later stages of construction, strictly after completing wet trades like plastering and flooring.

What is the standard method for applying putty?

Glass must be evenly bedded on a 1.5 mm to 2 mm thick layer of back putty, secured with glazing clips or pins, and smoothly finished with front putty.

How are metal frames secured into masonry?

Using MS lugs for steel frames or aluminium/galvanized lugs for aluminium frames, which are either embedded in concrete blocks or fixed with countersunk screws to wooden plugs.

IS 1081

: 1960

Code of practice for fixing and glazing of metal (steel and aluminium) doors, windows and ventilators

CurrentFrequently UsedCode of PracticeArchitectural · Doors, Windows and Shutter

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This code outlines the standard procedures for the installation, fixing, and glazing of metal (steel and aluminium) doors, windows, and ventilators in buildings. Site engineers and architects reference this code to ensure correct alignment, adequate weather-sealing, and the prevention of galvanic corrosion when metal frames contact masonry.

Code of practice for fixing and glazing of metal (steel and aluminium) doors, windows and ventilators

Quick Reference Values

Minimum clearance between frame and masonry opening5 mm

Minimum fixing lugs per jamb for doors3

Minimum fixing lugs per jamb for windows2

Thickness of back putty bed1.5 mm to 2.0 mm

Practical Notes

Aluminium frames must be coated with a thick layer of alkali-resistant bituminous paint where they come into contact with masonry or concrete to prevent corrosion.

Metal frames should never be forced or distorted to fit into undersized openings; correct masonry clearances must be accurately maintained.

Glazing should only commence after major wet trades like plastering and flooring are completed to protect the glass and allow the putty to set properly.