Skylight leak repair and reseal

Fix leaking skylights, replace seals and reglaze units for homeowners and landlords without a full replacement.

Startup cost£500 to £3k
Monthly revenue£800 to £4k
Time needed8+ h/week
First incomeWeeks
  • £500-3k
  • Side hustle
  • Out and about

Estimates for a small start in the UK, not guarantees.

Official data

17,463 UK companies in this field, 36% registered in the last 2 years

SIC 43910 “Roofing activities”. Source: Companies House, November 2026.

What it is

A smaller-scale service focused on finding and fixing leaks, resealing, replacing flashings, repairing blinds and swapping misted glazing units on existing skylights.

Your first three steps

  1. Build repair skills by working alongside a roofer or glazier, or taking a short roofing or glazing course
  2. Put together a van or car kit with sealants, flashing tapes, ladders and common spares
  3. Set up a simple local web page or Google listing and tell letting agents and property managers you take repair calls
Who pays

Homeowners, landlords, letting agents and small commercial property managers who want a quick fix rather than a big build job.

How it makes money

Call-out or fixed price per repair, plus parts. Larger faults can lead to a full replacement quote.

Skills that help
  • Fault finding on roofs and glazing
  • Comfortable working at height
  • Basic carpentry and sealing skills
  • Clear, honest communication
Watch out for
  • Public liability insurance
  • Safe use of ladders and roof access; check whether a job needs scaffold or a tower
  • Leaks can have more than one cause, so be careful what you promise and explain what you have and have not fixed
  • Older roofs or fragile rooflight materials can be dangerous to walk on, so check before stepping on them
  • Check whether some work counts as notifiable under Building Regulations

Deep research report · UK

Everything you need to start: skylight leak repair and reseal

Researched with live web search for United Kingdom: real startup prices, the licences and rules, what others charge, a break-even example, how to find your first customers and a 30-day launch plan. With sources.

  • Startup costs with real prices
  • Licences, registration and rules
  • Pricing: what others charge
  • Break-even example
  • Finding your first customers
  • 30-day launch plan
  • Risks and how to reduce them
Ready in about 2 minutes · one-off payment, tax included

See a full sample report

Questions people ask

How much does it cost to start a skylight repair business?

Startup costs are typically around £500 to £3,000, depending on your tools, access equipment and insurance. These are estimates, so price your own ladders, sealants and replacement parts before you commit.

How much can a skylight repair business earn?

Monthly revenue is typically around £800 to £4,000, depending on how many jobs you take on and how many hours you work. These are estimates, and the low end assumes around 8 hours a week.

What should I check before starting skylight repairs?

Check that you have public liability insurance, how to use ladders safely and whether a job needs a scaffold or tower. Also check whether some work counts as notifiable under Building Regulations, and be careful what you promise on leaks.

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