Stop Donating £1,400+ to the Grid: Why Your London Roof is a Financial Black Hole in 2026

With energy costs continuing to rise, a well-maintained roof with proper insulation can make a real difference to how efficiently your home retains heat. Here's what to consider.

Your Roof and Energy Efficiency

A significant amount of heat is lost through the roof in older properties. London has a large stock of Victorian and Edwardian housing that was built without modern insulation standards, and many homeowners find that improving their roof is one of the most effective steps they can take to reduce heat loss.

HJR Roofing carries out new roof installations and repairs across London and Hertfordshireusing quality materials and modern underlays. If you're planning a roof replacement, it's also a good opportunity to review your insulation.

1. Older Roofs and Heat Loss

Properties in Islington, Highgate, and Hampstead were largely built before modern building regulations required adequate insulation.

When carrying out a full roof replacement, we use modern breathable membranes and can advise on insulation options to help improve your home's thermal performance.

2. Roof Maintenance and Energy Performance

A well-maintained roof covering keeps water out and performs better over time. Extension roofs in particular — common in properties in Fulham and Mill Hill— benefit from regular inspection to catch deterioration early.

Our roof maintenance programme covers inspecting and treating roofs before small issues become costly repairs, which also helps the covering perform as it should for longer.

3. Chimney Stacks and Flashings

Chimney stacks and parapet walls are common sources of heat loss and water ingress if the flashings and pointing have deteriorated. Properly sealed and maintained flashings keep water out and help the roof perform efficiently.

HJR Roofing carries out lead flashing repairsand chimney repointing as part of our repair service. Get in touch if you've noticed damp around a chimney breast or parapet wall.

4. Planning a New Roof?

If your roof is nearing the end of its life, replacing it is a worthwhile investment for the long term. A new roof using quality materials and a proper underlay will perform better, last longer, and give you the opportunity to improve insulation at the same time.

Our new roof installations come with a written guarantee on materials and workmanship, and we carry out a free site survey before any work begins.

Get in Touch

HJR Roofing has been working on roofs across London and Hertfordshire for over 25 years. We're Which? Trusted Trader certified and rated 5 stars on Checkatrade.

Frequently Asked Questions