Not necessarily. Flashing, roof junctions, the frame and glazing can need different work. Ask for an assessment of the actual fault before ordering a new unit.
Repair, replacement or a new rooflight?
A leak around an existing rooflight, a misted glazing unit and a new opening are different jobs. Describe the symptom or planned change first. Say whether you want repair options or already have a specified replacement. Include the roof covering and unit details you can obtain safely without going onto the roof.
A replacement may involve the frame, glazing, opening mechanism, flashing and internal lining, or only some of those parts. Ask for those items to be distinguished. A new installation needs assessment of the opening, support, weatherproofing and room below; it is more than supplying a window.
Useful next steps
Leaks around frames and flashing
Explain where water appears and whether it follows rain, wind or cold weather. An indoor mark near the unit does not confirm that the glazing is at fault. Inspection may need to consider the surrounding roof, junctions and frame as well as the unit itself. Avoid ordering a replacement on the strength of a photograph alone.
Ask whether the proposed work corrects a defective junction, renews compatible flashing or replaces the unit. State any previous sealant repairs and their dates. If temporary protection is needed, agree its limits and keep the permanent repair as a clear separate scope. Do not climb onto a rooflight or adjacent covering to inspect it.
Glazing, opening parts and condensation
Moisture on the room-facing glass is a different observation from misting between glazing layers or water running around the frame. Record which you see and when it occurs. Tell the business about opening difficulties, damaged seals or controls, and any recent changes to ventilation or room use.
Ask whether parts are available for the existing model and whether a targeted repair is suitable. For electrical opening controls, establish who handles any electrical work. A roofer’s assessment of external weatherproofing should not be assumed to include every glazing, ventilation or electrical fault. Confirm the proposed scope before agreeing a replacement.
Installing a new opening
Explain the room, desired position and whether drawings already show the opening. Position affects the room layout as well as the roof outside. Ask who assesses structural support and specifies the weatherproofing, ventilation and energy performance. A rooflight should not be cut into a roof before these details and applicable approvals are resolved.
Planning Portal identifies structural, weatherproofing, ventilation and thermal considerations for rooflights. Use that guidance to frame questions for the designer and installer, rather than as a DIY construction specification. A loft conversion, new room or wider building alteration has additional scope beyond the rooflight itself.
Flat-roof and pitched-roof details
The unit and its installation details need to suit the roof type, pitch and covering. On a flat roof, ask how the rooflight meets the waterproofing and how water will move around it. On a pitched roof, agree the compatible flashing and how surrounding tiles or slates will be reinstated. Do not assume a unit intended for one arrangement suits another.
If roof renewal is planned, coordinate the unit and roof specifications before ordering either. Agree which contractor is responsible for the completed junction and whether retaining an old unit affects the new roof’s guarantee. For repair work, obtain the existing model and relevant installation information where available.
Useful next steps
Property checks before changing a Sudbury roof
Check the actual address and proposal with the appropriate planning and heritage route. In Sudbury, Babergh’s conservation information is a starting point for identifying constraints. Listed status, conservation-area controls and building regulations are separate matters; an enquiry or a supplier’s standard drawing does not grant permission.
Give the council or adviser the proposed position, appearance and specification, alongside the existing roof details. For a nearby village, check its responsible authority. If the work could affect a bat roost, obtain appropriate advice before disturbing the building. Do not assume a roof inspection has covered ecology.
Sources: Babergh: conservation areas · Natural England: bats, protection and licences
What should a rooflight quote include?
Ask for the exact unit and size, agreed support and opening preparation, flashing or upstand detail, insulation and internal making good. Include access, removal and disposal of the old unit where applicable. A supply-only price is not comparable with a complete installation price.
Separate optional blinds or powered controls from the essential installation. Agree who redecorates the room and who is responsible for weatherproofing if several trades are involved. Ask for product and workmanship guarantee terms, completion records and any operating instructions at handover.
- Unit specification and installation detail suited to the roof
- Access, removal, disposal and internal finishes
- Responsibility for approvals, junctions and written guarantees
Preparing your rooflight enquiry
Give the business enough information to distinguish repair, replacement and a new opening. You do not need to access the roof or remove the unit before enquiring.
Discuss existing documents or safe photographs with the business later; this form has no attachment upload. An enquiry does not order a unit or book an installer. Confirm that the business can undertake the particular work.
- Postcode, roof type and the room below.
- The symptom or planned installation, and model details safely visible indoors.
- Existing drawings and any roof renewal or extension happening alongside it.
- Access restrictions and whether internal making good is needed.
Before arranging rooflights & skylights
For an older Sudbury property, check the address’s status and proposed visible roof alteration with the relevant authority. A small rooflight is not automatically acceptable on every listed or conservation-area building.
Agree these details before work starts
- Existing leak or glazing problem, replacement or new opening
- Roof type, unit details if known and any drawings
- Indoor and external access, making-good requirements and known heritage status
Local reference: Babergh: conservation areas