What this work involves
Consider the room from inside and coordinate the opening with structure, roof build-up, operation and shading.
- Position and daylight distribution
- Operation and shading
- Weatherproofing and internal lining
Use the following design considerations when coordinating this service with a wider project. Agree which parts apply to your request.
Assess frame, reveal, insulation and internal finish as one junction.
What the drawing needs to explain
Place existing and proposed elevations side by side and add a window-opening section. Mark visible changes and elements requiring adaptation inside.
Allow for later maintenance
Keep a record of the differences between existing and renewed details. Include product information and locations of components that must remain accessible.
Which trade-off matters?
New performance and existing proportions need assessment together. A different frame profile can affect glass area, reveals and internal finishes; compare the complete detail, not just the product rating.
Cost factors for this service
Costs depend on size, glazing type, structural alterations and finishes. Ask for the scope and selected specification to be described separately.
Bring this to the discussion
Photographs of the existing situation, available drawings and your requirements for roof windows, domes & rooflights. Identify the elements that should remain.
Questions about the work
What should I discuss before arranging roof windows, domes & rooflights?
A larger rooflight does not always give a better result. Consider overheating, privacy and how light is distributed in the room.
The design situations here illustrate choices; they are not completed projects or a diagnosis of your property.

