10 Signs You Need a New Roof

1. Tiles Are Regularly Sliding or Lifting

A tile displaced after an exceptional storm is not necessarily a sign of a failing roof — it may simply be an unlucky tile in a vulnerable position. But if tiles are regularly moving across different areas of the roof, particularly after moderate wind, this indicates a systemic fixing failure — almost certainly nail sickness on a 1960s–70s property. Individual tile replacement doesn't fix nail sickness. It's the most common indicator we see across Chippenham's Hardenhuish estate that a full re-roof is the right answer.

2. Active Water Ingress Through the Ceiling

Water staining on ceilings below the roof — particularly after heavy rain — indicates active ingress. The source may not be directly above the stain: water can track along battens and felt before dropping. A failed lead valley on the rear slope can cause ceiling staining in a front bedroom. We trace the source accurately during every survey visit. Active water ingress needs assessment promptly — each wet period increases the risk of timber damage, mould growth and insulation saturation.

3. Visible Daylight From the Loft

Inspect your loft on a bright day with the light off. Thin slivers of light around tile edges are normal ventilation gaps. Any substantial gap where light is clearly visible indicates missing or displaced tiles — an active failure. If you can see daylight, rain and wind can get in. This requires prompt assessment and usually same-day or next-day repair.

4. Sagging or Uneven Roof Lines

Look at your roof line from the street. It should be straight and consistent along the ridge and across each slope. Sagging or dipping in the ridge line indicates structural issues — rotten or failed roof timbers beneath. This is more serious than tile failure and requires a structural assessment alongside the roofing survey. Sagging is most common on Victorian properties in Chippenham's town centre where original roof timbers are now 100–140 years old.

5. The Roof Is Over 50 Years Old and Has Never Been Surveyed

Concrete interlocking tile has a design life of 40–60 years. If your Hardenhuish, Stanley or Sheldon property has original 1960s–70s tile and has never had a comprehensive survey, nail sickness is a real probability at this age. This doesn't mean you definitely need a new roof — a survey will tell you the actual condition — but it's a significant age threshold where a free survey gives valuable information.

6. Damp or Wet Loft Insulation

Damp insulation in the loft — visible as discolouration, compression, or moisture to the touch — indicates either a roof ingress problem or a condensation issue. Condensation dampness tends to be widespread and uniform; ingress dampness is localised to specific areas. Both need investigation. Saturated insulation has zero thermal value and becomes a mould risk. Don't ignore damp loft insulation — find the source and address it.

7. Heavy Moss Coverage Across the Whole Roof

Moss on a roof is not inherently a sign of failure — it's a maintenance issue on most properties. However, very heavy moss on an older concrete tile roof can indicate: tiles that are past their surface protection life; moisture retention that has been shortening tile life; and lifting at tile edges from moss colonisation beneath. On a 50-year-old roof, heavy moss combined with any of the other indicators on this list is worth taking seriously. Roof cleaning resolves the moss issue; the survey tells you whether anything further is needed.

8. Granules in the Gutters

Concrete tiles have a surface coating of mineral granules that provide UV protection and colour. Over 40–50 years, this coating erodes. If your gutters regularly fill with grit or granule material — visible as a fine aggregate in the downpipe outlet or gutter section — the tiles are losing their surface protection. This is an age indicator that warrants a survey to assess overall tile condition.

9. Lead Flashings That Have Been Patched Repeatedly

Lead flashings around chimneys, at valley junctions and at abutments have a service life of 50–80 years when correctly installed. But some flashings — particularly those installed by previous contractors using sealant rather than properly formed lead — fail much sooner. If you have had the same chimney or valley "sealed" two or more times, the lead itself needs replacing, not resealing. A third sealant patch over a failed flashing is money wasted.

10. You Are Planning to Sell in the Next 3–5 Years

This isn't a structural sign, but it's practically important. Roofing issues — nail sickness, failing lead, heavy moss — are increasingly identified in pre-purchase surveys across Chippenham. A survey note of "roof requires attention" can reduce an agreed sale price or delay a transaction. Addressing roof issues before going to market costs less than the renegotiation they cause. We offer pre-sale roof surveys and produce written reports across all of north Wiltshire.

What To Do Next

If you recognise any of these signs on your Wiltshire property, the right first step is a free survey — not a commitment to work. A survey tells you exactly what's happening, what the options are, and what genuine urgency there is. Most roof issues are not emergencies. Some are. A survey gives you the information to make a good decision.

We carry out free written roof surveys across Chippenham, Corsham, Calne, Melksham, Malmesbury, Box, Devizes, Bradford-on-Avon and all of north Wiltshire. Call {PHONE} to arrange one.