7 Warning Signs You Might Need a New Roof (And What to Do Next)
Leaks, sagging, or missing tiles? Discover the 7 key signs your London roof may need replacing—plus expert tips from local pros on what to do next.
1. Leaks or Water Stains Inside Your Home
Purpose: Spot the most obvious clue early.
If your ceiling shows dark patches, bubbling paint, or peeling plaster—especially after rain—it’s a clear signal your roofing isn’t waterproof anymore. Even small drips can indicate saturated layers beneath tiles or slates.
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2. Curling, Cracked or Missing Tiles
Purpose: Visual inspection tip.
Roofing tiles aren’t just aesthetic—they protect your home. Curled, broken, or entirely missing tiles expose the underlying deck to rain and wind. If more than 10–15% of your tiles are damaged, it usually leads to a full replacement, not piecemeal fixes.
3. Significant Granule Loss on Asphalt Shingles
Purpose: Detect shingle aging.
Shingles with ceramic granules are meant to reflect UV and protect asphalt. These flakes collect in gutters—if they’re filling with granules after storms, it means the shingles are nearing end-of-life, losing their protective layer.
4. Sagging Roof Decking
Purpose: Serious structural indicator.
Bowed or drooping areas suggest damp wood and structural failure. This is a clear sign your roof needs immediate attention and most likely a complete replacement for safety.
5. Roof Age Over 20–25 Years
Purpose: Maintenance planning advice.
Most modern roofing systems last around 25–30 years. If your roof installation predates 2000 and has never been overhauled, it’s on borrowed time—even if it looks okay now. Schedule an inspection soon.
6. Persistent Condensation or Ice Damming
Purpose: Reveal insulation/ventilation issues.
Condensation inside your loft or icicles hanging off your eaves in winter mean poor insulation or ventilation. Unless improved, a new roof won’t fix the damage. Replacement time? Usually yes—and with added insulation upgrades.
7. Increased Energy Bills or Temperature Swings
Purpose: Financial trigger for homeowners.
If your heating or AC bills have spiked and you notice rooms aren’t maintaining temperatures, your roof’s thermal performance could be failing. A new roof with proper insulation can slash bills by up to 15%.
What to Do Next
Book a Professional Roof Survey – A certified roofer inspects the deck, underlayment, flashing, and structure—beyond what a visual check can reveal.
Ask for a Detailed Report – Your report should include a summary of issues, images, solution options & costs, plus estimated lifespan of each.
Compare Replacement Types – Consider options like concrete tiles, slate, or modern pitched systems—matching aesthetic, longevity, and your budget.
Check Installer Credentials – Ensure your installer is TrustMark‑registered, safely insured, and offers at least a 10‑year warranty.
Factor in ROI – A quality roof replacement adds thousands to your home’s value—not just protection.
