Correct Selection of Glazing Putty and Compounds Putty Fronting There are various types of putty that can be used for glazing single panes of glass into coated timber or metal frames using a putty fronting glazing technique. The selection of the putty most suited to any one application depends upon a combination of factors such as the frame material, its porosity, together with coating systems applied before and after glazing. Most putty types require overcoating using a non-microporous coating system that will provide protection to the putty and ensure its long-term performance. Microporous paint and stain systems require the use of a modified putty such as Colour Glaze. Most putty types are designed for use in external putty fronting and do not work well when used for internal putty fronting. If there is a requirement for internal putty fronting then Hodgson Sealants Rapid Set Putty should be considered. Bead Glazing This is the technique of glazing single panes of glass into timber or steel frames fitted with internal or external beading. The use of a non-setting glazing compound often provides better performance in bead glazing than a regular fronting putty. Non-setting glazing compounds require overcoating using microporous or non-microporous overcoating systems to ensure long-term performance. Bedding Compound This compound is for use in jointing and bedding metal window frames and assemblies into non-porous or sealed substrates. Bedding Compound may be overcoated using microporous or nonmicroporous overcoating systems to ensure long-term performance.

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