In larger factories of UPVC doors, such as the one shown here, the length is determined by means of measuring rooms, so the direct cut will be made automatically every time.Two glazing beads lie side-by-side and when the saw blade comes across, the next pair is also cut at the correct angle.

Although it takes somewhat longer, a cross-cut saw can also be used to cut each glazing bead individually.The glazing operation can be carried out on a table or, more easily, with the aid of a glazing stand.

The seals are checked to make sure that they are firmly fitted and the rebate area is cleaned with compressed air.The mitred ends are sealed with silicone and the glass unit is then fixed in place with glazing blocks in accordance with the glazing guidelines.The glazing beads are then knocked into place.After a final test to ensure proper functioning, the completed window is made ready for dispatch to the building site.

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