How Much Does Lead Flashing Cost in the UK? (2026 Price Guide)

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How much does lead flashing cost?

Lead flashing costs are made of two separate things: the lead itself, which is a traded commodity and moves with the market, and the labour to fit it, which depends far more on access and complexity than on the length of lead involved.

Here is the at-a-glance picture for material, based on our current Code 4 roll pricing.

The pattern in that table is worth understanding before you buy. Longer rolls cost less per metre — the 6m roll of 150mm lead works out roughly 10% cheaper per metre than the 3m roll. And width drives price directly: 300mm lead is twice the material of 150mm, so it costs roughly twice as much per linear metre.

Lead flashing price per metre (material only)

As a rule of thumb for budgeting, Code 4 lead in the common domestic widths works out at roughly:

Those figures are for Code 4, which is the standard weight for domestic flashing work. Code 3 is thinner and cheaper per metre; Code 5 and above are heavier and correspondingly more expensive, roughly in proportion to their weight.

Bulk discounts apply — the more you buy, the lower the per-metre price. On a full chimney or a run of abutment flashings it is usually worth buying the longer roll even if you have some left over, both for the lower unit price and because having spare lead on site saves a return trip.

What affects the price

Four things move the number.

Lead code. Price tracks weight almost directly. Code 3 is around three quarters the price of Code 4 per square metre; Code 5 is around a quarter more. Specifying a heavier code than the job needs is money spent for no benefit; specifying a lighter one to save money usually shortens the life of the flashing.

Width. Lead is priced by weight, so a 300mm roll costs about twice a 150mm roll of the same length. Measure the detail properly before ordering — buying 300mm when 150mm would cover the flashing doubles your material cost for nothing.

The lead market. Lead is traded on the London Metal Exchange and its price moves week to week. That is why lead flashing prices are less stable than most building materials, and why any published price guide needs a date on it. When lead prices spike, lead-free alternatives become relatively more attractive.

Roll length. Longer rolls carry a lower per-metre price. If you need more than about 4m in total, the 6m roll will normally beat two 3m rolls.

Fitted cost: chimney vs wall vs roof-to-wall abutment

Labour is where the cost of a lead flashing job is actually decided. The material for a typical chimney re-flash might be £100–£200; the finished job is commonly several times that.

What actually drives those figures:

• Access and scaffolding — often the single largest line item, and largely independent of how much lead is involved
• Roof pitch — steep roofs are slower and need more safety provision
• Chimney size and position — a stack in the middle of a slope with a full back gutter is a much bigger job than one on a gable end
• Condition of the masonry — if the chase needs cutting fresh, or the stack needs repointing, add to both time and cost
• Whether soakers are needed — fitting soakers means lifting and re-laying tiles course by course
• Region — labour rates vary significantly across the UK

If you are getting quotes, ask what is included: scaffold, repointing, soakers, patination oil, and disposal. Quotes that look wildly different usually differ on those items rather than on the lead.

Lead vs lead-free flashing on cost

Lead-free flashing is generally cheaper per metre than lead, and the gap widens when lead prices are high. But the material price is only part of the comparison.

Lead-free installs faster. It cuts with a knife or scissors, needs no bossing skill and no specialist tools, so labour time drops. It also has no scrap value, which removes theft risk — a genuine cost factor on vulnerable or repeatedly targeted properties, where replacing stolen lead twice costs more than any material saving.

Against that, traditional lead lasts longer, is often required on listed and conservation work, and remains the better material for complex bossed details. On a straightforward abutment or a simple chimney, lead-free is usually the cheaper finished job. On a complex stack or a heritage property, lead is the right specification and the cost difference is secondary.

How to buy lead flashing by the roll

Measure the total linear metres of flashing you need, then add for overlaps — every piece overlaps the next by at least 100mm, and pieces are a maximum of 1.5m long, so a 6m run needs five pieces and roughly 0.4m of extra material in laps.

Then choose the width. 150mm covers step flashings, cover flashings and most soakers. 300mm is for aprons, wider abutments and back gutters. Many chimney jobs need both, so check each face separately rather than buying one width for the whole stack.

Available roll sizes:

• Code 4, 150mm × 3m — small repairs and single abutments
• Code 4, 150mm × 6m — best per-metre value for step and cover flashings
• Code 4, 300mm × 3m — aprons, back gutters and wider details
• Lead-free, 300mm × 6m — where theft risk or fitting speed matters

All orders ship on free next-working-day UK delivery, with same-day dispatch before 1pm, and bulk pricing applies across the order.

Ways to reduce cost without cutting corners

• Buy the longer roll — the per-metre saving is real and you will use offcuts
• Measure each face separately so you buy 300mm only where you actually need it
• Combine jobs — if the scaffold is up for other work, flashing costs a fraction of what it does as a standalone visit
• Consider lead-free where theft has been a problem or the detail is simple
• Don’t drop to a lighter code to save money — Code 3 in place of Code 4 saves a few pounds and shortens the life of the flashing by years
• Buy patination oil and sealant with the lead rather than paying for a second delivery
• Bulk pricing applies across the whole order, so ordering your membrane, battens and flashing together lowers the unit cost on all of it

Frequently asked questions

How much is lead flashing per metre?

Code 4 lead in 150mm width works out at roughly £13–£16 per metre ex VAT depending on roll length; 300mm is around £26–£30 per metre. Prices move with the lead market, so check current product pricing before budgeting.

How much to lead-flash a chimney?

A full chimney re-flash commonly runs £250–£600 fitted, rising to £600–£1,200 or more where scaffolding and repointing are required. Access and stack complexity matter far more than the cost of the lead itself.

Is lead-free flashing cheaper?

Usually yes, both on material and on labour, since it cuts with a knife and needs no bossing. It also has no scrap value, which removes theft risk. Traditional lead still wins on longevity and on conservation work.

What Code of lead is most cost-effective?

Code 4 for almost all domestic flashing. It is thick enough to last and thin enough to work easily. Dropping to Code 3 to save money is a false economy on anything other than soakers and small repairs.

How much lead do I need for my roof?

Measure the linear metres of each flashing run, add 100mm for every overlap (pieces are a maximum of 1.5m long), and choose the width per detail — 150mm for step and cover flashings, 300mm for aprons and back gutters.

Products mentioned in this guide

• Lead Code 4 Flashing Roll 150mm × 3m
• Lead Code 4 Flashing Roll 150mm × 6m
• Lead Code 4 Flashing Roll 300mm × 3m
• Lead Free Flashing 300mm × 6m Grey

Related guides

• How to Install Lead Flashing (step-by-step)