When your roof has reached the end of its life, a full replacement by Cambridge Roofers gives your Cambourne home a sound, watertight structure built from quality materials on properly checked timbers.
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A roof replacement is not just a re-tile. We strip everything back to the bare timbers, inspect every rafter and batten for rot, splits or movement, and replace whatever is beyond saving before a single new slate or tile goes on. That preparation stage is where the quality of a replacement is decided. Cutting corners here means the new covering sits on a compromised structure and problems return within a few years.
Once the timbers are sound, we fit new roofing felt or a modern breathable membrane, lay new treated battens to the correct gauge for the tile or slate being used, and bed or hang the new covering from eaves to ridge. Ridge tiles are bedded or dry-fixed, verges are finished neatly, and all lead work around chimneys, valleys and abutments is cut and dressed to a proper weather-tight seal. The job is not done until the flashings, gutters and fascia boards have been checked and left in good order.
The material you choose affects both how the roof performs and what it costs over its lifetime. For pitched roofs the main options are concrete interlocking tiles, clay plain tiles, and natural or fibre-cement slates. Each has different weights, profiles and gauges, so the battens, timbers and sometimes the wall plate need to suit whichever product you select.
These are honest typical UK price ranges, not quotes. Your actual cost depends on your roof's dimensions, the access available, the condition of what is underneath, and which material you choose. Get two or three written itemised quotes before committing.
Repair or replacement is a question worth spending real time on, because the wrong decision in either direction costs money. Replacing a roof that could have been repaired is an unnecessary expense. Repeatedly patching a roof that should be replaced is money thrown away on short-term fixes that never quite hold.
There is no single rule that settles it, but there are clear signs that point strongly in one direction or the other. Understanding those signs helps you ask better questions when a roofer comes to look at your home.
If the roof is less than fifteen years old and has been maintained, isolated damage is usually repairable. A handful of slipped or cracked tiles, a failed flashing around a chimney, a section of ridge that has lost its pointing or a short run of felt that has perished at the eaves are all jobs that a competent roofer can fix without touching the rest of the roof.
Storm damage is another clear case for repair rather than replacement. Wind lifts tiles, dislodges ridge caps and occasionally shifts lead. If the rest of the roof was in decent condition before the storm, stripping and starting again would be disproportionate. A targeted repair gets the roof weathertight and you continue with the years of remaining life in the original covering.
The same logic applies to a leak with a clear, single cause. A split valley gutter, a blocked and overflowing parapet gutter, or a poorly sealed pipe penetration through the felt are all repairable faults. Fix the cause and the roof does its job again.
Age is the most straightforward indicator. Most concrete tile roofs have a practical life of around forty to fifty years. Natural slate can last longer, but the nibs break and the nails corrode, causing slates to slip progressively. If your roof is approaching or past that age, the underlying felt will also be brittle and likely to fail. At that point, each repair addresses one symptom while the overall structure continues to deteriorate. You can spend a significant sum on repairs over three or four years and still end up replacing the roof.
A common pattern on older roofs is recurring moss and lichen growth that lifts tiles at their tails, allowing wind-driven rain to get under the covering. If the felt beneath has perished, water gets through to the timbers. Soft timbers, staining on the inside of the roof space, or damp patches on ceilings directly below the roof slope are signs that the structure has been wet for some time. By that stage a patch repair addresses only the surface, and the hidden damage continues.
Wide-scale slippage across a large area of the roof is another indicator. If many slates or tiles have moved, the nails or nibs holding them have failed across the board, and replacing individual units one by one becomes an ongoing maintenance cost that never ends. A full strip and relay resolves the problem once.
If a roofer finds that the timbers underneath are extensively rotten or that the structure has moved, repair of the covering alone cannot address the underlying problem. Replacement, done properly, gives you the opportunity to put right the structure at the same time.
Some roofs fall into a grey area, with some areas of wear but no wholesale failure. In that situation a good roofer should give you a clear account of exactly what is wrong, where it is, what fixing it will cost, and roughly how many years of useful life remain in the roof overall. If that information is not offered, ask for it.
A useful way to frame the decision is to compare the cost of a repair against the remaining life you are likely to get from it. If a repair costs £800 and buys you five more years on a roof that will need replacing in ten, it may be sensible. If the same repair costs £1,200 but the roof is likely to need wholesale attention in two years regardless, you are probably better off putting that money towards a replacement now rather than spending it again shortly afterwards.
Some homeowners prefer to manage cost by doing a partial replacement: stripping and relaying one slope at a time while the other remains sound. This can work, but only if the two slopes genuinely are in different conditions. Ask any roofer suggesting this approach to explain exactly why the other slope does not need attention at the same time. If the answer is unconvincing, be cautious.
Before you sign anything or pay a deposit, make sure you can answer these questions from what the roofer has told you.
A roofer who answers all of these clearly and in writing is giving you a basis for a proper decision. Vague answers or pressure to decide quickly are reasons to get a second opinion.
Not every replacement involves a pitched tiled roof. Flat roofs over garages, porches and rear extensions are a separate category. The standard covering for many years was built-up felt in two or three layers, and a felt flat roof typically lasts fifteen to twenty-five years depending on specification and how much standing water it holds. When felt flat roofs fail, the surface blisters, splits at laps, and water tracks under the covering.
The current preferred alternative to felt on flat or low-pitched roofs is EPDM rubber membrane, which is bonded or mechanically fixed in large sheets with few if any seams. EPDM is flexible in cold weather, resists UV degradation and, when correctly installed, has a long service life. The cost for a flat roof replacement using EPDM typically runs from around £70 to £120 per square metre installed, making an average garage roof replacement roughly £1,500 to £3,500 depending on size and any timber repairs needed.
Garages and porches sometimes have pitched roofs covered in mineral felt or thin concrete tiles on a shallow pitch. These can be converted to a proper pitched covering or replaced like-for-like. The right choice depends on what the existing structure can support and what the planning rules allow for the property.
A roof replacement is the natural point to address fascias, soffits and guttering, because the scaffold is already in place and the eaves are already exposed when the old tiles come off. Replacing worn timber fascias with uPVC at the same time as the roof avoids a second scaffold hire later and ensures the new roof's drip edge and felt can be correctly terminated and dressed into a clean gutter system.
Soffits that are rotten or missing allow birds and pests into the roof space. Blocked or cracked gutters sitting on rotten fascias will overflow and drive water back under the eaves, undoing careful work on the roof itself. It is worth asking your roofer to check the full eaves detail when they survey the roof, not just the tiles.
Cambridge Roofers works across Cambourne and the wider area including Histon, Girton, Fulbourn, Waterbeach, Trumpington, Milton, Cherry Hinton and Impington, as well as further afield to Ely, Over and Royston. Whether you need a full pitched roof stripped and relaid, a flat garage roof replaced, or a clear assessment of whether repair or replacement is the right call for your home, call us to arrange a roof survey and a written itemised quote.
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Call any time. Calls are answered day and night and passed straight to our roofers.
