Roof repairs in Cambridge can address leaks, broken tiles, failed flashings and ridge pointing. A good roofer should recommend no unnecessary work.
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A roof repair is not one thing. It might be a single cracked tile that is letting water track down into a bedroom ceiling. It might be a flashing that has lifted away from a chimney stack and is funnelling rain into the wall below. It might be a ridge that was repointed years ago with a mortar mix that is now crumbling out in pieces. Each of these needs a different approach, different materials and a different amount of time on the roof.
What they have in common is that catching them early costs far less than leaving them. Water that gets in at one point does not stay there. It follows the roof structure, travels along timbers and can emerge on a ceiling several metres away from where it entered. By the time you see a stain, the water has usually been moving for some time.
We repair leaking roofs, replace broken or slipped tiles, repoint ridges and fix failed flashings. If a targeted fix will do the job, that is what we quote - we do not suggest a new roof when the existing one has useful life left in it.
Most homeowners first notice a problem from inside the house, not from the street. The signs below are worth taking seriously rather than watching and waiting.
Understanding the cause helps you make a better decision about the repair. Roof problems rarely appear at random. There are patterns, and knowing them helps you ask the right questions when a roofer comes to look.
Age and weathering of mortar. Cement mortar used to bed ridge tiles and repoint verges has a limited life. After 20 to 30 years, freeze-thaw cycles and rain work the mortar loose. It does not fail all at once - you will see cracking or missing sections before a tile actually lifts. Ridge repointing is a common repair on older properties. The fix is to rake out the old mortar, clean the bedding surfaces properly and relay or repoint with a suitable mix. Skipping the preparation and simply pointing over old mortar will not last.
Lead flashing failure. Lead is the standard material for sealing the junction between a roof slope and a wall, chimney or abutment. A well-installed lead flashing, dressed correctly into a chase in the masonry and clipped at intervals, can last many decades. Problems arise when the lead was never fixed correctly, when the chase was not cut deep enough, or when the lead has been patched with mastic sealant which eventually cracks and separates. Sealant patches are a temporary measure at best. Once mastic is cracking, the underlying flashing problem needs to be addressed properly.
Nail fatigue on plain tiles and slates. Plain clay tiles and natural slates are fixed with nails through a pre-formed hole into the batten below. Over many decades, iron nails corrode and the shank thins until the nail can no longer hold the tile's weight. The tile then slips down the slope. This is called nail fatigue or nail sickness. A single slipped tile can be re-nailed or replaced, but if tiles are slipping in several places across a roof, it is a sign the nails throughout are reaching the same age and the roof may need stripping and re-laying rather than a series of patch repairs.
Cracked or porous tiles. Plain clay and concrete tiles can crack from impact (a falling branch, someone stepping on the wrong spot) or from frost action if they have absorbed moisture and then frozen. Concrete tiles also become porous as they age, which means they absorb more water rather than shedding it cleanly. A cracked tile should be replaced rather than sealed - the hairline crack that appears small from the ground is rarely watertight.
Flat roof membrane failure. Traditional felt flat roofs have a relatively short service life - typically 10 to 15 years for a standard two-layer system before the surface begins to crack and bubble. When the surface layer breaks down, water sits on it and eventually finds a way through any weak point. EPDM rubber membranes last considerably longer and are now a standard replacement option. If a flat roof is showing blistering, cracking or ponding water that does not drain, the repair question is whether a patch will hold or whether a full replacement is the more economical decision over five to ten years.
Condensation versus leaks. Not all ceiling damp is a roof leak. In poorly ventilated loft spaces, warm moist air rises from the living space, hits the cold underside of the roof covering, and condenses. Over time this can wet the insulation, damp the timbers and produce ceiling stains that look exactly like a slow leak. A good roofer will check the loft ventilation as well as the roof covering before confirming the diagnosis. If a roofer quotes for tile or flashing work without looking in the loft, that is worth querying.
Prices vary significantly depending on the nature of the problem, the height of the roof and how much preparation is needed. The figures below are typical UK ranges to give you a starting point.
Many small repairs do not require scaffolding and can be reached safely with a ladder and roof hooks. Where scaffolding is necessary, we will tell you before you commit to anything.
The answer depends on the age of the roof, the nature and number of faults and what the rest of the covering looks like. A roof that has one failed flashing and is otherwise in reasonable condition makes obvious sense to repair. A roof where tiles are slipping in half a dozen places, the ridge mortar is failing throughout and the lead is patched with sealant is telling you that repair after repair will cost more over the next few years than a reline or re-roof done once properly.
We will tell you honestly which situation you are in. If the roof has useful life left, targeted repair is the right answer. If it is approaching the point where ongoing repair costs outweigh replacement, it is worth knowing that before you spend money on a series of short-term fixes.
The repair itself is often straightforward. What makes the difference is the preparation and the materials used. For a tile repair, the surrounding tiles need to be lifted carefully to avoid cracking them, the new tile should match the existing covering as closely as possible in material and profile, and the fixing should be secure rather than just wedged. For repointing, the old mortar should be fully raked out rather than simply covered over. For lead work, the lead should be properly dressed and clipped, not held with silicone.
Ask any roofer you speak to how they will fix the problem specifically - not just that they will fix it. A vague answer is a warning sign.
We carry out roof repairs across Cambridge and the nearby villages including Trumpington, Girton, Histon, Impington, Fen Ditton, Milton, Chesterton and Comberton. We also cover further-out locations such as Cambourne, Papworth Everard, Royston and Over. If you are outside these areas, call us and we will let you know.
If you have a ceiling stain, missing tiles you can see from the ground, or water getting in somewhere you cannot identify, the sensible first step is to have the roof inspected. We will tell you what we find, what caused it and what the repair involves - and we will give you a straight quote for the work rather than a vague estimate.
Call us to arrange a roof survey in Cambridge or the surrounding area.
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Call any time. Calls are answered day and night and passed straight to our roofers.
