Where’s the job?

Scope of Works

• inspect the roof window and surrounding tiles from inside and on the roof

• assess flashing, seals and glazing to decide repair or full replacement

• reseal or replace lead/EPDM flashing and weatherproof membrane as required

• remove and replace the window unit if damaged, including fitting new frame and glazing

• make good internal lining, insulation and plasterboard edges to a basic finish

• test operation, draught sealing and provide care instructions; clear debris and take waste away

• use fall‑protection, edge protection or a tower scaffold where needed and wear PPE

Typical Cost

Time on Site

Minor resealing and flashing repairs typically take 1–3 hours; full unit replacement usually takes 4–8 hours depending on access and finishes

Questions to Ask Your Tradie

• do you offer a written guarantee and what does it cover

• are you a recommended fitter for any manufacturers (eg Velux) and can you supply the unit details

• will you provide or arrange scaffolding/tower and is that included in the quote

• how will internal finishes be made good and is plastering/decoration included

• do you have public liability insurance and can you provide a copy

• if electrics or sensors are involved who will disconnect/reconnect them and is that charged separately

How to Avoid Surprises

• ensure safe roof access and confirm where scaffold or a tower can be erected

• clear the loft area and move furniture beneath the window to protect it

• check access/parking for a scaffold lorry and tell neighbours if scaffold will be used

• confirm listed building or conservation area restrictions before ordering new units

• agree who supplies materials, who removes waste and where materials can be stored on site

• make the installer aware of condensation or insulation concerns so they can recommend upgrades