If your roof in Diss is showing signs of age or damage, knowing what to look for early can save you from a far costlier job down the line.
Call any time. Calls are answered day and night and passed straight to our roofers.
Most homeowners do not plan to replace their roof - they reach that decision because the warning signs have built up to a point where patching is no longer sensible. Understanding those signs, and what causes them in the first place, helps you make that call with confidence rather than waiting until water is coming through the ceiling.
Thetford Roofers install new roofs for homeowners in Diss and the surrounding area. We use quality slates, concrete and clay tiles, and flat-roof membranes appropriate to the property and the job.
A single leak, properly traced and fixed, does not mean you need a new roof. But if the same area leaks again after repair, or if new damp patches appear elsewhere within a season or two, the covering itself is failing rather than just one isolated spot. At that stage, repeated patch repairs cost more over time than a full replacement.
The cause is usually age-related breakdown of the tile or felt underlay. On a standard pitched roof, the underlay beneath the tiles is the secondary line of defence against wind-driven rain. When it perishes - which it eventually does on any roof older than roughly 25 to 30 years - water finds its way through even when the tiles themselves look intact from the street.
A roof that dips in the middle or shows a wavy line along the ridge is not just an aesthetic issue. It usually means the timber structure beneath - the rafters, purlins or ridge board - has taken on moisture and begun to rot or distort. This can happen when a failing covering has let water sit on the timbers for months or years undetected.
Once the structure is compromised, no new set of tiles will fix the underlying problem. A proper new roof in this situation means stripping everything back, assessing and replacing damaged timbers, fitting a new underlay and battens, and re-covering with slate or tile. Trying to tile over a soft or sagging structure shortens the life of the new covering and creates the same problem again.
The occasional slipped tile after a windy spell is a repair job. When tiles are slipping regularly across several areas, or when a significant proportion are cracked, porous or breaking at the nibs, the roof is telling you it has reached the end of its serviceable life. Nibs - the small tabs that hook tiles onto the batten - become brittle with age and snap, which is why older concrete tile roofs in particular begin to shed tiles more frequently as the years go on.
Slate roofs develop a similar problem called delamination, where the layers within the slate separate and the stone begins to flake. Welsh slate is extremely durable and can last well over a century, but some of the softer imported slates used from the 1980s onwards deteriorate much faster. If your slate roof is dropping pieces or looks powdery on the surface, it is worth having a close inspection carried out before the next winter.
On a bright day, go up into your loft and look upward. You should not be able to see daylight between the tiles. Pinprick gaps are less alarming than larger gaps, but any consistent pattern of light suggests the covering has shifted or the battens have deteriorated. While you are up there, look for dark staining on the rafters or felt - that is evidence of water tracking in, even if you have not yet seen it come through the ceiling below.
Flashings are the strips of lead or other metal that seal the roof where it meets a chimney, a wall, a dormer or a roof window. They are a common source of leaks, and failed flashing does not always mean the rest of the roof needs replacing. However, when flashing is failing on a roof that also shows other signs of age, it is often most cost-effective to replace the roof and all the associated lead work at the same time rather than patching the flashing on a covering that will need stripping within a few years anyway.
Chimney stacks in particular cause problems. The mortar pointing around the flashing, and the haunching at the top of the stack, both deteriorate with frost and rain over time. Water running down the inside of a chimney breast often gets blamed on the flashing when the real cause is an open joint at the top of the stack. A thorough inspection needs to check both.
Most roof failures come down to one or more of the following:
New roof installations cover a range of property types - main house roofs, garage roofs, bay window roofs, flat-roofed extensions and outbuildings. Each has its own materials and its own failure patterns. A garage flat roof in felt that is bubbling, cracking or holding puddles of standing water is showing classic signs of end-of-life. An EPDM rubber membrane is a more durable replacement in most cases, lasting considerably longer than traditional torch-on felt when fitted correctly.
On pitched roofs, the choice of covering matters. Concrete interlocking tiles are the most common replacement tile and suit most roof pitches, but they are heavier than the original plain tiles on many older homes. If your existing roof structure was built for lighter plain clay tiles, switching to heavy concrete interlocking tiles can put stress on rafters that were not designed for the extra load. This is the kind of detail that should be discussed before any materials are ordered.
When getting prices for a new roof, ask each roofer the following:
These questions separate roofers who have thought through the job from those who are simply pricing tiles and labour at face value.
If you have spotted any of the warning signs above, or if your roof is more than 25 years old and has not been properly inspected, call us to arrange a roof survey. We cover Diss and the wider area including Weeting, Mundford, Santon, Croxton, Feltwell, Methwold and Elveden. The sooner a failing roof is assessed, the more options you have.
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Call any time. Calls are answered day and night and passed straight to our roofers.
