Roof Replacements in Great Shelford

Expert Roof Replacements
in Great Shelford

What a Full Roof Replacement Actually Involves

A roof replacement is not simply a case of nailing new tiles over the old ones. We strip everything back to the bare timbers, which means removing the old tiles or slates, the felt underlay, and the battens beneath. Only once the deck is clear can you properly inspect the structure for rot, woodworm, or sections of rafter that have sagged over time.

Any damaged timber is cut out and replaced before new breathable membrane is laid across the rafters. Fresh treated battens go on over the top, then the new tiles or slates are fixed from eaves to ridge. The ridge itself is re-pointed or re-bedded, lead or mortar details are renewed at any abutments or chimney flashings, and new lead valleys are dressed where the roof changes direction. A job done properly at each of those stages is what separates a lasting replacement from one that leaks again within a few years.

When Repairs Are No Longer Enough

Not every roof needs replacing. A handful of slipped slates or a cracked ridge tile is a repair job. The signs that push a roof toward replacement are cumulative failure: felt that has broken down and is letting water into the lath, multiple slates that have delaminated or snapped, a roof that has been patched so many times that finding the next leak is guesswork, or timbers that have softened enough to flex underfoot.

If a surveyor or roofer finds that the original felt underlay has deteriorated completely, that alone means a full strip is usually the more economical route. Keeping old, failed felt in place under new tiles just traps moisture against the timbers and delays the problem rather than solving it. A common problem is discovering the underlay has gone at the same time as several other components, making a piecemeal repair more expensive in the long run than a single replacement.

On older properties, the original fixings may also be the issue. Nails corrode over time and slates begin to "nail-sick" - sliding out of position because the fixing has failed rather than because the slate itself is broken. If a large proportion of a roof is nail-sick, replacement becomes far more sensible than trying to re-fix individual slates across an ageing deck.

Typical Costs for a Roof Replacement in Great Shelford

This is the question most homeowners ask first, and it deserves a straight answer. The cost varies with the size and type of property, and a full roof replacement on a large detached house will generally cost more than one on a semi-detached or terraced home.

A bungalow with a straightforward pitched roof and plain concrete tiles will sit toward the lower end. A larger detached house with multiple roof planes, a chimney stack, dormer windows, and natural slate will sit at the upper end or beyond it. Understanding what drives the price up or down helps you judge any quote you receive.

What Pushes the Cost Up

• Natural slate versus concrete or clay tiles. Welsh slate or Spanish slate costs significantly more per square metre in materials than a standard concrete interlocking tile. Natural slate also takes longer to fix because each piece must be individually nailed. The material cost difference alone can add £2,000 or more on a medium-sized roof.
• Roof complexity and pitch. A simple gable-ended roof with two main planes is quick to strip and re-tile. A hipped roof, a roof with multiple valleys, or one with dormers means more cutting, more lead work, and more time on the scaffold. Every internal or external angle adds cost.
• Chimney stacks. Each chimney needs its flashings stripped and renewed, the back-gutter re-dressed, and the stack itself pointed or repointed. If the stack is tall or the brickwork is in poor condition, that work can add several hundred pounds to the overall price.
• Timber damage. If the inspection at strip-out reveals significant rafter rot, wall plate failure, or a sagging ridge board, the timber repairs add both cost and time. A roofer cannot price this accurately until the old materials are off, which is why responsible quotes for complex roofs are sometimes given as a range or confirmed after strip-out.
• Access and scaffold. A two-storey house with good access from a driveway costs less to scaffold than a house surrounded by soft ground, narrow side passages, or mature trees. Scaffold hire is typically charged per week or per the duration of the job, so anything that extends the programme increases this element.
• Fascias, soffits, and guttering. Replacing the roof is the natural point at which to renew uPVC or timber fascias and soffits, since the scaffold is already in place. Adding these to the scope will increase the total cost but is usually more economical than returning with a separate scaffold later. Ask your roofer for a combined price if these are due for renewal.
• Waste disposal. A full roof strip produces a significant volume of rubble and old tiles. Skip hire or bagged waste removal is usually included in a quote but worth confirming, as some prices exclude it.

What Brings the Cost Down

• Simpler roof shape. A plain double-pitched roof with no dormers or valleys is faster to complete. Less cutting, less lead work, and a more predictable programme keep labour costs lower.
• Concrete interlocking tiles. Modern concrete profiled tiles are durable, widely available, and faster to fix than natural slate or plain clay tiles. They are a sensible choice on many properties and carry a long manufacturer's expected lifespan.
• Good timber condition. If the rafters and ridge board are sound, the timber phase of the job is minimal. This is more likely on a younger roof or one that had a quality original installation with proper ventilation.
• Straightforward access. Level ground, adequate clearance for a scaffold lorry, and no neighbouring properties to negotiate around keeps the mobilisation cost down.
• Timing. Booking outside of the peak spring and summer period can sometimes give you a more competitive price, as demand eases slightly in autumn and early winter.

Getting a Quote You Can Actually Compare

When you ask more than one roofer to quote for a replacement, make sure each quote covers the same scope. Ask specifically whether the price includes: stripping and disposing of the old materials, replacing any damaged timbers found at strip-out (or whether this is priced separately), renewing the felt underlay and battens, re-bedding or re-pointing the ridge, and renewing all lead flashings and valleys. If one quote omits the skip and another includes it, you are not comparing like for like.

A quote that seems significantly cheaper than the others often means something has been left out, or that reclaimed second-hand tiles will be used rather than new ones. Second-hand slates in good condition are not necessarily a problem - they can be excellent - but you should know what you are getting. Ask what material the roofer intends to use and where it comes from.

Also ask how the roofer will handle any unexpected timber damage found during strip-out. A clear explanation of how this will be priced - typically per metre of rafter replaced - allows you to budget sensibly rather than being surprised mid-job.

Choosing the Right Tile or Slate

The material choice affects both cost and appearance. Planning considerations can apply if your property is in a conservation area or if you are considering a significant change of material, so it is worth checking with the local authority before specifying something very different from the existing roof.

Concrete tiles come in a range of profiles and colours. They are heavier than slate, so the structure needs to be capable of carrying the load, but on a standard timber-framed roof this is rarely an issue. Clay plain tiles have a traditional look and are a common choice on older and period-style properties. They are more expensive than concrete but last well and tend to weather attractively.

Natural slate - Welsh or Spanish - is the premium option. It is thin, light, and very durable when properly fixed. It suits a wide range of property styles and sits well on steeper pitches. The additional cost is in both the material and the labour, since each slate must be individually gauged and nailed.

The Scaffold and How Long the Job Takes

A full roof replacement on a standard semi-detached or detached house typically takes between three and seven working days for the roof itself, depending on size, complexity, and weather. The scaffold is usually erected the day before work begins and struck a day or two after completion. For a larger or more complex roof, the programme will be longer.

Scaffold needs to be up before any work can start at ridge height, and it must be properly tied and inspected. If a roofer offers to do the work from ladders only on a two-storey replacement, treat that as a warning sign rather than a cost saving.

Flat Roofs and Extensions

Many properties have a flat or low-pitched roof section over a rear extension, garage, or bay window. These are often felt-covered and become the first part of a home to need attention. A common flat roof replacement uses either traditional built-up felt (torch-on felt) or an EPDM rubber membrane, which is bonded or mechanically fixed to the deck and forms a single-piece, seamless covering.

EPDM has become increasingly popular for residential flat roofs because it handles the thermal movement that flat roof structures go through in cold and warm weather, and it does not rely on overlapped seams in the way that traditional felt does. Costs for flat roof replacement on a typical rear extension run from around £800 to £2,500 depending on size and system chosen.

Roof Work in the Villages Around Great Shelford

We carry out roof replacements across Great Shelford and the surrounding area, including Histon, Girton, Fulbourn, Trumpington, Cherry Hinton, Milton, Impington, and Waterbeach, as well as further afield toward Ely and Royston.

If you are in Histon or Impington, Girton or Fulbourn, the practical considerations for a roof replacement are the same: proper strip-out, sound timber, quality felt and battens, and the right tile or slate fixed correctly. The same applies whether the property is in Cherry Hinton, Chesterton, or any of the surrounding villages.

Fascias, Soffits, and Guttering

The fascia board runs along the eaves and carries the gutter. The soffit boards seal the gap between the fascia and the wall. Both are exposed to moisture and, on older properties with timber fascias, they rot. When the scaffold is already in place for a roof replacement, it makes practical sense to inspect and replace these at the same time if they are failing.

uPVC fascias and soffits are the standard replacement choice: they do not rot, need no painting, and require very little maintenance. The guttering can be renewed at the same time, which ensures a clean run with no blocked or misaligned joints. Adding fascias, soffits, and guttering to a roof replacement on a typical semi-detached house typically adds £800 to £2,000 to the overall cost, but saves the expense of a separate scaffold visit later.

Questions Worth Asking Before You Commit

Before you agree a roof replacement with any roofer, there are straightforward questions that will help you understand what you are paying for and avoid problems later.

• Is the quote inclusive of skip hire and waste disposal, or is that extra?
• Will new breathable membrane and new treated battens be used throughout, or will anything be reused?
• How are any additional timber repairs priced if rot is found at strip-out?
• What make and specification of tile or slate is being used?
• Will all lead flashings and valleys be replaced, or patched?
• Who erects the scaffold, and will it be inspected before work begins?
• Are you covered by public liability insurance for this type of work?

A roofer who answers these plainly and without hesitation is giving you far more confidence than one who gives you a cheap price and vague answers. The roof is the most consequential part of your home's weatherproofing - taking the time to understand exactly what the job covers is worth every minute.

Get a Price for Your Roof in Great Shelford

If your roof is showing signs of age, leaking, or has been patched repeatedly without a lasting fix, a replacement survey will tell you whether a full job is the right call or whether targeted repairs will see you through for longer. Call us to arrange a roof survey on your Great Shelford property and we will give you a straight assessment and a clear, itemised price.