Step 2 – Fixing the window
All windows that are installed must be installed plumb, level and square with the aperture, without twist, racking or distortion of any frame member.
The correct window fixing is essential and all windows installed must be fixed to brickwork or to an adjacent frame to resist all likely imposed loads, which will cause the frame member to deflect..
Fixing methods should allow for thermal movement, and will be influenced by:
- The presence of absence of a wall cavity
- The nature of any cavity
- The relative position of the plaster line, and the need to preserve the interior decorations
- The design of the revealFrame fixings are available from Via The Window Merchants which are drilled directly throw the frame and into the wall no rawl plugs are required which makes fixing very easy and retains the position of the window and does not distort the frame

It is important to ensure that the recommended fixing distances are followed as closely as possible to, as many of the problems that subsequently arise with PVCu window and doorset installations arise from incorrect fixing spacing.
Generally all four sides of the frame should be secured, whenever possible, using the following recommended fixing distances:

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