Lead flashing

Calculate your estimate

Stay Safe & Don't Worry About Exact Numbers! There is no need to climb your roof. Simply estimate the dimensions to your best knowledge. I will personally take precise measurements during a free site visit, and the final price will be calculated using the exact same transparent formula.

Service Parameters

Lead Flashing Cost Calculator
15 Yrs System Warranty 30 Yrs Expected Lifespan

Included in Price

Cutting a chase for lead flashing
Cutting a chase for lead flashing

Cutting a chase for lead flashing involves grinding a clean horizontal slot into the brickwork or mortar joint so the lead can be properly inserted, secured and sealed. This helps create a neat, weatherproof detail where the roof meets the wall.

Included
Sealing Lead Flashing
Sealing Lead Flashing
5 Yrs Warranty 10 Yrs Lifespan

Sealing lead flashing with silicone helps close small gaps between the lead and brickwork, reducing the risk of water ingress. A neat bead of exterior-grade silicone is applied along the joint to help keep the flashing weatherproof.

Included
Applying Patination Oil
Applying Patination Oil
Midland Lead

Patination oil is applied to newly installed lead flashing to protect the surface, reduce staining and help the lead weather evenly. It gives the flashing a cleaner finish and helps prevent white carbonate marks on surrounding brickwork, render or roof tiles.

Included
Ladder Access Work (Scaffolding Not Included)
Ladder Access Work (Scaffolding Not Included)

This service includes access using standard ladders or a hook ladder. Many repairs can be carried out efficiently without the need for scaffolding, saving both time and cost. However, safety is always our priority. If site conditions do not allow safe ladder use (e.g. limited space or difficult access), scaffolding may be required and is not included in this price.

Included

Estimate Summary

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No commitment: This is a free, non-binding estimate. Clicking the button will add this service to your list. You can then add more services in the cart or review everything before submitting your request.

Lead Flashing Cost Calculator in Brighton, Hove, Worthing and Sussex

If you need new lead flashing installed or old leaking flashing replaced, this calculator gives you a quick way to estimate the likely cost before arranging a site visit. Lead flashing is commonly used where a roof meets a wall, around chimneys, on small roof details and in areas where rainwater needs to be directed safely away from the building.

The price of lead flashing work depends mainly on the size of the area, the width of lead required, the roof detail, access conditions and how much preparation is needed before the new flashing can be fitted. This calculator is designed to make the process simple and transparent for homeowners in Brighton, Hove, Worthing and surrounding Sussex areas.

How the lead flashing price is calculated

The calculator works by using the measurements you enter and the lead flashing option you select. You do not need to climb onto the roof or take risky measurements. A simple estimate is enough at this stage. During a free site visit, I will check the exact measurements, roof condition and access, then calculate the final price using the same clear pricing method.

The estimate can change if the roof detail is more complex than expected, if the brickwork is damaged, if access is difficult, or if extra preparation is needed. However, the purpose of the calculator is to give you a realistic starting price before any work begins.

Lead flashing sizes available

Different roofs need different widths of lead. Small wall abutments may only need narrow flashing, while chimneys, deeper junctions or more exposed roof details may need wider lead to provide proper weather protection.

The calculator includes common Code 4 lead flashing options such as:

  • Lead flashing 6″ / 150 mm Code 4
  • Lead flashing 9″ / 240 mm Code 4
  • Lead flashing 12″ / 300 mm Code 4
  • Lead flashing 18″ / 450 mm Code 4
  • Lead 24″ / 600 mm Code 4
  • Lead 30″ / 762 mm Code 4

Code 4 lead is a common choice for many roofing details because it gives a good balance between durability, flexibility and practical installation. The correct width depends on the roof, the wall detail and how much cover is required to keep the joint watertight.

What is included in the price

The price is not only for the lead itself. A proper lead flashing installation includes preparation, fitting and finishing details that help the flashing last longer and reduce the risk of leaks.

The work may include cutting a chase into the brickwork or mortar joint so the lead can be inserted properly. This creates a cleaner and stronger detail than simply sealing lead against the face of the wall.

The joint is then sealed to help stop water getting behind the flashing. A neat bead of exterior-grade sealant is applied where required to protect the joint between the lead and the wall.

Patination oil is also applied to newly installed lead. This helps protect the surface, encourages even weathering and reduces white staining on surrounding brickwork, render or roof tiles.

Why lead flashing prices can vary

Lead flashing work can look simple from the ground, but the real cost depends on the condition of the roof and wall detail. A short, straight section on good brickwork is usually much quicker than a chimney, stepped wall, awkward corner or detail with old failed cement and loose mortar.

Common factors that affect the price include:

  • The total length or area of flashing required
  • The width of lead needed
  • Whether the old flashing must be removed
  • Condition of brickwork, mortar or render
  • Whether a new chase must be cut
  • Access to the roof
  • Height and safety requirements
  • Complexity around chimneys, walls, valleys or roof edges

This is why an online estimate should be treated as a helpful guide, not a final fixed quotation. The final price is confirmed after checking the roof properly.

Lead flashing repair or replacement?

In some cases, a small repair may be enough. If the lead is still in good condition and the problem is only a small gap or failed seal, resealing may solve the issue. However, if the lead is split, too short, badly fitted, loose, heavily stained or installed without a proper chase, replacement is usually the better long-term option.

Poorly installed flashing can allow water to run behind the roof covering and into the building. This may cause damp patches, stained ceilings, rotten timber or damage to insulation. Replacing failed flashing properly is often cheaper than repeatedly patching the same problem.

Local lead flashing service in Brighton, Hove, Worthing and Sussex

I provide lead flashing installation and repair services across Brighton, Hove, Worthing and nearby Sussex locations. The calculator is useful if you want a quick idea of cost before booking a visit, especially for roof-to-wall junctions, chimney flashing, small flat roof details, pitched roof abutments and general waterproofing work.

After you submit your estimate, you can add notes and upload photos. This helps me understand the roof detail before visiting and gives you a more accurate response.

Get an instant lead flashing estimate

Use the calculator to choose the lead flashing size, enter your estimated measurements and see an instant price. The estimate is free and non-binding. You can review the details before sending your request, and I will confirm the exact price after checking the roof in person.

A correctly fitted lead flashing detail can protect your roof for many years. The most important part is not only the lead material, but also the preparation, chase cutting, sealing and finishing. This is what helps create a clean, watertight detail that performs properly in real weather conditions.