Mildenhall Roofers installs new roofs for homeowners in Thetford, and this page breaks down honestly what a new roof costs, what drives the price up, and where savings can be made without compromising the job.
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A new roof on a standard semi-detached house in the Thetford area typically falls somewhere between £5,000 and £10,000 for a pitched roof replacement using concrete interlocking tiles, including scaffolding, strip-off and disposal of the old materials. That is a wide range, and the sections below explain what moves a job toward the top or bottom of it.
For natural slate, expect to add roughly 30 to 50 percent to the material and labour cost compared with concrete tiles. Clay plain tiles fall between the two. Flat roof replacements on extensions and outbuildings typically cost £60 to £120 per square metre depending on the system used, with EPDM rubber at the higher end of that range and traditional felt at the lower.
These are typical current UK figures. Your specific project may fall outside them depending on the factors set out below, and getting at least two detailed written quotes from contractors who have inspected the roof in person is always the right approach.
This is the most obvious cost driver and the one homeowners most often focus on. Roof area is measured in square metres of actual sloped surface, not floor area. A hipped roof covers more surface than a simple gabled roof over the same floor plan because of the sloped end sections. A bungalow with a roof that spans the full footprint of the building will often have a larger roof area than a two-storey house of the same ground floor size.
Larger roofs also require more scaffold, which adds to the overall cost. Scaffold is charged based on the perimeter and height of the structure, so a large detached bungalow can attract a higher scaffold cost than a two-storey terraced house.
A simple gabled roof with two slopes, a ridge, and two verges is the cheapest shape to re-roof. As complexity increases, so does the cost. Hips add more cutting and more hip tile installation. Valleys - internal angles between two slopes - require lead or valley tile work that takes additional time. Dormers add more abutments and more flashing. Roof windows such as Velux units need individual flashing kits and careful detailing around each one.
A roof with four valleys, two dormers and a chimney stack will cost significantly more in labour than a plain gabled roof of the same overall area. When getting quotes, this is worth asking about specifically - a contractor quoting on a complex roof should explain how they are accounting for the extra detail work.
As a rough guide for pitched roofs:
For flat roofs, EPDM rubber is more expensive per square metre than traditional felt but the longer interval before replacement often makes the lifetime cost more comparable.
This is the factor most likely to add unexpected cost, and it is the one homeowners most often do not plan for. When the old covering is stripped and the bare structure is exposed, damaged or rotten timbers may be found that were not visible beforehand. Rafter ends at the eaves are the most common casualty - they are exposed to the most moisture and are the first to soften.
Structural timber repairs are costed separately from the roof covering. Replacing a few rafter ends might add a few hundred pounds to the job. Replacing multiple rafters, a ridge board or sections of purlin can add more. On older properties in and around Thetford and the Mildenhall area - particularly those that have had a slow or long-running leak - significant timber work is genuinely possible.
A good contractor will tell you upfront that they cannot guarantee the structural cost until the roof is stripped, and they will contact you before doing structural work beyond what was agreed rather than presenting you with a surprise invoice at the end. This is something worth discussing explicitly before work starts.
Scaffolding is essential for safe work at roof level and it is a real cost that should be visible in any quote you receive. On a standard two-storey house, scaffold typically costs between £600 and £1,500 depending on the size of the structure and how many elevations need to be covered. On a large detached property, it can be higher.
Some contractors include scaffold in their headline price; others quote it separately. Make sure you know which applies when comparing quotes. A roofing quote with no mention of scaffolding should prompt the question of how the contractor plans to carry out the work safely.
Chimney stacks require lead flashing on all four sides - front apron, back gutter and two step flashings up the sides. If the stack is in poor condition, pointing or brickwork repair may also be needed before the flashing can be dressed correctly. Each chimney stack adds to the overall cost, and a property with two stacks will cost more than one with none, all other things being equal.
Flashings at other abutments - party walls, dormer sides, flat roof upstands - add to the lead work element of the price. These are not areas to cut back on because flashing failures are one of the leading causes of roof leaks.
Stripping a full roof generates a significant volume of heavy waste. Old tiles, mortar, broken slates and old felt all need to go somewhere. Skip hire or a contractor-arranged disposal service adds to the overall cost. For a standard house roof, waste disposal typically adds £200 to £400 to the job. Confirm this is included in any quote, because some lower tenders leave it off and add it later.
Choosing concrete interlocking tiles over natural slate is a legitimate cost saving if the roof pitch and property type suit them. Using a dry verge system rather than traditional mortar bedding saves on future re-pointing but has a similar upfront cost. Doing two or more roofing jobs at the same time - for example, a house roof and a garage roof - can sometimes reduce the overall cost because scaffold can be shared and mobilisation costs are spread.
Cutting back on underlay, batten quality, lead flashing or structural repairs is not a sensible saving. These are the elements that determine how long the roof performs, and skimping on them typically leads to early failure that costs more to put right than the original saving was worth.
We carry out new roof installations on homes and commercial properties in Thetford and across the surrounding area. If you want a clear, itemised cost for your roof replacement, call us to arrange an on-site survey.
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