Cambridge Roofers installs new roofs in Newmarket, working with clay tiles, concrete tiles, and natural slate to give homes a properly built, long-lasting replacement roof.
Most homeowners do not think about their roof until something goes wrong. By the time a leak appears inside the house, the roof has often been failing slowly for months or even years. Understanding the early warning signs - and knowing what causes them - means you can act before a manageable problem becomes a major one. This page covers what a new roof installation involves, what materials are available, what the work costs, and, in detail, the signs that tell you a replacement is needed and why those signs appear.
A full re-roof is not a patch repair. It starts with completely stripping the old tiles, battens, and underlay back to the rafters. The exposed timber is inspected for rot, woodworm, and structural damage before anything new is installed. Any damaged or decayed timber is replaced at this stage - it is the only time to do it cost-effectively.
New breathable underlay is laid across the rafters, followed by treated timber battens fixed at the gauge suited to the chosen tile or slate. Tiles are hung from the bottom course upward, with each row correctly lapped. Lead or aluminium flashing is fitted at chimneys, abutments, valleys, and any junction between roof planes. Ridge tiles are bedded or mechanically fixed, and the verges are finished in mortar or with a dry-fix system. All waste is removed on completion.
The tile or slate used on a new roof affects its appearance, its longevity, and whether it requires planning permission to change from the existing covering.
If your property has planning restrictions, the material may be specified for you. We check this before anything is ordered.
New roof prices typically range from around £5,000 to £9,000 for a standard semi-detached house and from £8,000 to £15,000 or more for a larger detached property. Welsh or Spanish slate adds to the cost; concrete tiles sit at the lower end. Figures vary with roof size, pitch, the number of hips and valleys, and the condition of the timber found once stripping starts. Any quote should include new underlay, batten replacement, lead flashing, and waste disposal as standard items, not extras.
The most useful thing a homeowner can do is recognise early signals. The following signs, seen individually or in combination, indicate a roof that needs professional attention - and in many cases, a full replacement rather than further piecemeal repair.
A single leak, repaired once, might genuinely be a one-off. But a leak that returns in the same place - or appears again nearby - after repair is telling you something about the roof's condition overall. The underlying cause is usually that the roof covering or the underlay beneath it has deteriorated across a wider area than the repair addressed. Individual tile or pointing repairs address the symptom, not the cause. When the same area leaks repeatedly, the repair cycle has become more expensive than a full replacement would be.
A tile slips when the nail holding it corrodes through, or when the batten it rests on has rotted. One or two slipped tiles on a roof of a certain age is normal. When slipping is happening across multiple areas of the roof, it points to a generalised failure of the fixings or battens beneath. This is not a tile problem - it is a substrate problem. Replacing individual tiles on a roof with failing battens is addressing the visible symptom while the cause continues underneath. A common pattern is that several repairs are done over a period of two or three years, each costing several hundred pounds, before a roofer advises a full strip and re-batten anyway.
If you can see points of light through the roof covering when standing in a darkened loft, the roof covering has gaps. This may be from slipped tiles, cracked tiles, failed mortar at the ridge or verge, or deteriorated underlay that has torn or shrunk away from the battens. Daylight gaps are direct entry points for wind-driven rain and for birds and insects. The presence of bird or bat droppings in a loft that was previously clean is a reliable indicator that gaps exist, even if you cannot immediately find them.
The roof surface should be flat between rafters, or gently curved on a swept roof. A surface that dips or sags between structural members suggests that either the battens have weakened, the underlay has degraded and is no longer providing any support, or in more serious cases, the rafters themselves have deflected. Sagging visible from outside - look along the roof plane from the gable end - means the structure needs professional assessment before any re-roofing is considered, as structural repairs will be needed alongside the new covering.
Damp timber in the loft after a period of rain is not always caused by a through-leak. It can also result from condensation caused by inadequate ventilation in the roof space. The two causes require different responses, so it is important to distinguish between them. Condensation moisture tends to appear across a wide area of timber and on the underside of the underlay, and it is often worse after cold nights following damp days. A through-leak tends to be localised and directly traceable to rain events. In either case, persistent moisture will eventually cause rot in the structural timber - so either cause needs addressing.
Clay tiles can last a very long time, but older tiles that were fired at lower temperatures are susceptible to freeze-thaw damage. Water is absorbed into the tile body, freezes in cold weather, expands, and breaks the surface layer away. This is called spalling. Once a tile has begun to spall, the exposed inner body absorbs even more water and the process accelerates. Spalling tiles lose their weathering properties and eventually crack through entirely. A few spalling tiles on a large roof may be replaced individually, but widespread spalling - visible as rough, pitted, or flaky surfaces - indicates that the tile batch is at the end of its useful life and replacement across the whole slope is the practical solution.
Ridge tiles are bedded in mortar and pointed along their lower edges. Over time, the mortar cracks through thermal movement, frost action, and simply age. When the mortar fails, ridge tiles can rock or shift, and in strong wind they can lift or fall. This is a safety risk as well as a water entry point. Hip mortar fails in the same way. Repointing ridge and hip mortar is a valid repair on an otherwise sound roof, but if the mortar is failing because the whole ridge has been down for 30 years and the tiles are also worn, a full ridge strip-and-relay is the correct approach rather than re-pointing tiles that are themselves near the end of their life.
Lead flashings seal the junction between the roof covering and vertical surfaces - chimney stacks, party walls, dormer cheeks. Lead expands and contracts with temperature changes. Over many years, this movement works the lead out of its mortar chase, or causes fatigue cracking in the lead itself. A flashing that has lifted even slightly at one edge allows water to track behind it, running down the chimney breast or wall internally. This often appears first as a damp patch on an internal wall rather than a ceiling stain, which is why chimney flashing failures are sometimes misdiagnosed as rising damp. Checking flashings is straightforward during a roof survey.
If you have seen one or more of the above on your property in Newmarket, the practical step is to arrange a roof survey with an experienced roofer. A survey will establish whether the roof needs a full replacement or whether targeted repair is still the right approach. We cover Newmarket and the surrounding area. Call Cambridge Roofers to arrange a survey and written assessment. We will tell you clearly what we find and give you a full written price before any work is committed to.
We install new roofs using clay tiles, concrete tiles, and natural slate. We strip fully, repair timber before laying any new material, fit breathable underlay and treated battens, and finish with properly weighted lead at every junction. We do not patch over problems that need a full replacement, and we will tell you plainly when repair is still the right answer. Call us to arrange a roof survey in Newmarket.
No obligation · We usually respond within 2 hours
Storm damage, active leak, damaged ridge - we aim to be on-site within 24 hours.
