Lean-to roofs glazed into a timber frame work are apt to cause some trouble. The timber frequently warps, and the putty dries out and shrinks, permitting water to enter tiny crevices. Eventually, this water leaves unsightly stains all along the wooden frame.
Cracking of the glass is also quite common, and leaks may occur between the roof and the main wall of the house, even though a strip of lead, zinc or felt called a ‘flashing’ is positioned there to form a weather-tight joint. If the timber frame has warped, it may be the cause of any cracked glass. In this case you will need entirely new frames before you can do any reglazing.
Glass is one of the most versatile building materials. Modern glass production offers a wide range of glass for glazing purposes, both plain and decorative, which are relatively inexpensive, and easy to obtain. Simple glazing techniques requiring the use of few tools are quite simple to learn, and when coupled with a basic knowledge of the different types of glass and their uses, will enable you to use glass to its best advantage in decorating.
All building materials are to some extent controlled by building regulations and local by-laws. In new building works and where any alteration is carried out, the size and the type of glass and its position in the building may have to be considered with regard to fire resistance, heat and sound transmission. If in doubt, consult the local building authority or employ a London Roofing Company to carry out the roofing repairs.