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Externally, the window will need to be sealed all round against water ingress. This is best done using a quality silicone seal, and depending on the material of the frame, try using a matching colour. Over time, movement can occur in brickwork, and because of the new settings of the window frame, gaps between the two surfaces may be too large for the silicone sealant. In such cases, it's just a matter of using beading to make up these differences. The window head for example would benefit by using a square edge beading such as 34 mm x 12 mm or similar. |
Another problem can result if the brickwork and pointing in particular being in poor condition, this can be remedied using a different type of beading such as Scotia. When fixed to the frame the space between the scotia beading and brickwork can form a excellent seal as well as hide the rough edge . Regarding the gap between the two sills, this too can be sealed using a good quality silicone. If as a result of the old stone sill being out of level, the gap between it and the window sill will not be parallel and would look unsightly and unprofessional if left. Its a simple matter of fitting a square edged bead as with the head, and scribe the underside of this beading for it to be parallel to the stone sill, and at the same time be level on the top edge.
In this tutorial, 180 mm x 18 mm linings, a 200 mm window board, and 75 mm architraves were used. |
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