Roof replacement cost by roof type and property size
Two roofs of the same measured area can be a week apart in labour. What separates them is how many times the roof changes direction, because every change of direction is a detail that has to be made watertight by hand.
Shape matters as much as size. A simple gable roof is the cheapest form to strip and re lay. Hips, valleys, dormers and mansards each add cut tiles, lead work and slow, skilled hours that a plain rectangle never needs.
Gable roof, the baseline
Two slopes, two verges, one ridge. Tiles run in full courses with minimal cutting, and the verge can be dry fixed cleanly. If you are trying to picture the cheapest form of pitched roof, this is it, and everything else is priced upward from here.
Hipped roof
Four slopes meeting at hips. Every hip means a diagonal cut on both sides, hip irons or a dry hip system, and slower setting out. Hipped roofs are common on interwar semis across this patch and typically carry a noticeable uplift over a gable of the same area.
Roofs with valleys
Where two roofs meet, a valley collects the water from both. Lead lined or GRP valleys need forming properly, and the tiles either side are cut on a rake. Valleys are also the first thing to fail on a neglected roof, so on a replacement they are worth doing generously rather than to minimum.
Dormers and rooflights
Each dormer is effectively a tiny roof with its own cheeks, flashings and often a small flat top. Rooflights need proper flashing kits sized to the tile profile. Both add hours rather than materials, which is why they surprise people on a quote.
Mansard and steep pitches
Above roughly 45 degrees, tiles need mechanical fixing on every course rather than nailing alternates, and the work is slower because nothing stays put on its own. Mansards combine a near vertical lower slope with a shallow upper one, so they carry two specifications on one roof.
Property size in practice
As a rough ordering for the same covering and access: mid terrace, then bungalow, then semi detached, then detached. A bungalow has a large roof relative to its footprint, which surprises owners who expect a single storey to be cheap. Detached houses usually carry two chimneys and more hips.
Where you can genuinely save
Choosing a good concrete tile over clay, doing one slope this year and one next, and keeping the scaffold on site for guttering or chimney work at the same time. Savings that come from thinner battens, no underlay upgrade or skipping timber replacement are not savings, they are deferred costs.
FAQs
Access is easier and scaffold is lower, but the roof area is large compared with the floor area, so the total is often closer to a semi than people expect.
Yes, for the same measured area. The extra sits in cutting, hip detailing and setting out time rather than in materials.
Usually. We identify the existing profile on the survey and quote either a current equivalent or reclaimed stock where the road has a defined character and a modern tile would look wrong.
Yes, and we show you before it is covered up. Rafter ends and battens are quoted at a stated rate so there is no argument about it mid job.
Related reading
More on costs & budgeting and the jobs that usually come with it.
- Fascia, soffit and guttering costs explainedCosts & budgeting
- How much does a new roof cost?Costs & budgeting
- What should a roofing quote include?Costs & budgeting
- What actually happens during a roof surveyProcess & paperwork
Looking for something specific? See our roofing services, cost guides, common roof problems or the areas we cover.
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