Ely Roofers handles lead flashing installation and repair for homeowners in Fordham, with honest pricing that reflects the actual scope of each job.
Call any time. Calls are answered day and night and passed straight to our roofers.
Lead work is one of those jobs where prices can differ significantly from one quote to the next, and it is not always clear why. This page sets out the main factors that influence what you will pay, so you can compare quotes fairly and spot when a price is unusually low or high.
As a general guide, chimney flashing repairs on a standard residential property in the UK range from around £300 to £900. Full chimney flashing replacement - stripping everything out and starting fresh - typically falls between £500 and £1,200 depending on stack size. Valley relining runs from roughly £400 to £1,500 or more for longer runs on a large roof. These are realistic current UK figures, not best-case estimates. The actual cost for your property in Fordham will depend on the specific factors below.
The most obvious driver of cost is how much lead is involved. A single chimney on a semi-detached house has a front apron, two short side sections, and a back gutter - four main pieces. A large period chimney stack with multiple flues may be twice the width, requiring substantially more lead and more time to dress and fix correctly.
Valleys vary in the same way. A short hip valley on a dormer extension might be three metres long; a main roof valley running from ridge to eaves on a large house might be eight metres or more. Lead is priced by weight or by linear metre of material, so length matters directly to cost.
Complexity adds time. A straight run of lead along a simple abutment is faster to complete than a chimney with cut brick, an angled profile and decorative stonework that the lead has to be dressed around. Intricate shapes take longer to form and cannot be rushed without compromising the quality of the join.
Lead sheet is graded by thickness and sold by weight. Code 5 sheet (2.24 mm thick) costs more per square metre than code 4 (1.80 mm). Where British Standard guidance calls for code 5 - such as a back gutter behind a chimney stack or a valley lining on an exposed roof - using code 4 instead is a false economy that leads to earlier failure. A lower quote that uses the wrong code should be questioned, not accepted.
Occasionally a quote will specify code 3 to reduce material cost. Code 3 is thinner and more prone to fatigue cracking, particularly on south-facing slopes or in positions with a long run. It is not recommended for most residential flashing work under current guidance. If a quotation does not state which code will be used, ask before you agree to the work.
Access adds a real and significant cost to many lead work jobs, and it is sometimes left out of an initial price to make the quote look more attractive. Be wary of any quotation that does not mention access explicitly.
For a single-storey extension abutment, a ladder and stand-off is usually sufficient. For a chimney on a two-storey house, a proper scaffold platform is safer and more practical - and allows the roofer to work correctly rather than rush from a ladder. A scaffold platform hire typically adds £200 to £600 to the job cost, depending on the size of the structure and how long it is needed.
Where a chimney is very tall or the pitch is steep, a full scaffold may be needed. On some properties, a mobile elevated work platform (cherry picker) is a faster alternative to a full scaffold, but these can only be used where vehicle access and ground conditions allow. Access costs should be itemised separately in any quotation so you can see what you are paying for.
Lead work does not exist in isolation. The condition of the brickwork, mortar joints and underlying timber all affect the final cost. If the raggle (the mortar chase the lead tucks into) has cracked badly, it may need to be cut out and reformed rather than simply repointed - this is more time-consuming. If the brickwork of a chimney is spalled or the stack needs repointing more broadly, that work is usually priced alongside the lead job.
Timber beneath lead - valley boards, gutter boards and tilting fillets - sometimes rots where lead has been leaking for an extended period. Replacing rotten timber adds material and labour cost and should be identified at the survey stage, not discovered mid-job. An experienced roofer will lift the area carefully before quoting so that hidden timber decay is found and included in the price.
If tiles or slates around the flashing are cracked or broken and need replacing as part of access for the lead work, those should be itemised too. A handful of replacement slates is not a large cost, but it is better to know upfront.
A partial repair - re-fixing a lifted section and repointing the raggle - will always cost less than stripping out and replacing an entire chimney flash. The question is whether a repair is the right choice or whether it simply delays a larger job by a few years.
If the lead is lifting in one localised spot because the mortar raggle has failed but the lead itself is sound, a repair is entirely appropriate. If the lead is cracked across multiple sections, buckled from repeated thermal movement or has been patched with sealant tape on several previous occasions, a full replacement is more cost-effective in the long run. A full strip and relay means you are not spending repair money every two or three years on a material that is already past its useful life.
A roofer should be honest with you about this distinction. If you are told a repair is fine when the lead is clearly fatigued across a wide area, a second opinion is worth having.
A lower quote is not always a problem. If access is straightforward, the job is small and the existing brickwork is sound, the price can legitimately be at the lower end of the range. Quotes vary between tradespeople and that is normal.
Be cautious, however, if a quote is significantly lower than others and does not specify the lead code, omits access costs, or makes no mention of soakers (which should be included wherever there is a pitched abutment alongside a chimney or wall). Soakers are easy to leave out of a quote - and easy to leave out of the actual job too, which is why some installations fail within a few years of being done.
To get a clear, itemised price for lead work on your property in Fordham or the surrounding area - including Ely - call us and ask for a roof survey.
No obligation · We'll call you to arrange a free visit
Call any time. Calls are answered day and night and passed straight to our roofers.
