Choosing a roof window looks simple, but the decisions you make beforehand affect how well it works, how much light you get and how smoothly the installation goes. A short checklist helps.
Where will it go?
Think about the room and the light. A window placed too high or too low can be awkward to use. The roof structure also matters: the rafters, purlins and any steel or beams limit where an opening can be formed without extra work. A roofer can look from inside the loft to see what is possible.
What size and type?
Roof windows come in several widths and lengths. A larger window gives more light but needs a bigger opening, which means more structural work. Consider whether you want a centre-pivot window or a top-hung one, which opens differently and gives a different view and headroom.
Light, heat and ventilation
South-facing windows bring in a lot of light and warmth, which is welcome in winter but can overheat a room in summer. Think about blinds or shading. A window that opens also gives you useful ventilation, and may be required if the room is to be used as a bedroom.
Regulations
Building regulations can apply to a roof opening, particularly for structure, insulation and means of escape if the room is a bedroom. Planning rules can apply in conservation areas and for listed buildings. Check before work begins.
Inside finishing
The window opening has to be lined, insulated and finished inside, and it is worth planning who does the plastering and decorating.
Watertightness
The flashing around the window is what keeps it dry, so it needs to suit your roof covering.
See our VELUX Window Installers section or call 07766 547309 for a free quotation.
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