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Maintenance · Basics

Yearly inspection of your dormer

Ten minutes once a year is the cheapest maintenance you will ever do. The point is not to fix things on the spot — it is to spot the small signs that turn into big problems if you ignore them for two or three winters in a row.
4 min leestijd·Onafhankelijke informatie

Short answer

Once a year, in dry weather, look at the dormer from outside and from inside. Check the lead apron, the cladding joints, the frame seals, the gutters and the interior corners. If everything looks the same as last year, you are done. If anything has changed, photograph it and decide whether to act now or watch it for one more season.

Outside checks

  • Lead apron. Still tight to the tiles, no lifting at the corners, no obvious patching or staining.
  • Cladding joints. Even gaps, no warping, no algae lines suggesting water sits where it should run.
  • Sealant. Around frames and corners — no cracking, no shrinkage, no gaps you can fit a fingernail into.
  • Gutters and drainage. Clear of leaves and moss; water should flow off, not pond on a flat dormer roof.
  • Tiles around the dormer. No slipped, cracked or missing tiles next to the dormer cheek.

Inside checks

  • Dark spots, ring marks or peeling paint in the top corners of the dormer.
  • Condensation between window panes (sign of failed glazing seal).
  • Drafts you can feel along the frames on a windy day.
  • Soft or spongy spots in the plasterboard near the ceiling.
  • Musty smell in the loft below — often the first warning of a slow leak.

10-minute checklist

Checklist

Run through this once a year

  1. 01Lead apron looks the same as last year.
  2. 02No new staining or algae on the cladding.
  3. 03Sealant around frames intact.
  4. 04Gutters and drainage clear.
  5. 05No interior stains, soft spots or musty smell.
  6. 06Glazing seals clear, no condensation between panes.
  7. 07Photographs taken of any change since last year.

When to bring in a professional

Call a roofer or the original installer if you see active water ingress, lifting lead, slipped tiles, soft plasterboard or condensation between glass panes. Catching any of those at the yearly check almost always means a small repair; ignoring them for a winter usually means a bigger one.

FAQ

FAQ

Veelgestelde vragen

01How long does a dormer last?
30–50 years for the structure, depending on materials and maintenance. Lead and flashing typically last 30+ years; cladding, frames and glazing have their own product life and may be refreshed once during the dormer's lifetime.
02What is the single most important maintenance item?
A yearly visual inspection of the lead apron, the cladding joints and the sealant. Ten minutes from the loft window or with binoculars from the garden catches 90% of issues early.
03Do I really need a paint cycle on a timber dormer?
Yes. A timber dormer that misses one paint cycle is on borrowed time. The cost of skipping a paint job is rarely the saving; it is usually the trigger for a much bigger repair.
Conclusie
A dormer that gets ten minutes of attention every spring will outlast a dormer that gets none, by years. It is the single highest-ROI maintenance habit a homeowner can build — and the only one that costs nothing but the walk around the garden.