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Lead flashing or Flashband for a patch or a new abutment

Updated: 23 October 2026

The listing says Flashband repairs lead, and you need to know whether that sentence covers your leak. A split in sound lead, or a small felt patch, can be a tape job. A missing flashing, a side abutment with soakers, or a chimney that needs a new cover is a lead job, in short lengths, at a stated code. The thin aluminium coil is neither. The [barge flashing comparison](/hub/diy-supplies/barge-flashing) holds the three rolls we kept. Prices are the shelf figures stored on 19 October 2026. We did not dress a chimney. There is no lead price here, so none is guessed from the tape. A qualifying purchase can earn a commission at no extra cost to you.

The listing says Flashband repairs lead, and you need to know whether that sentence covers your leak. A split in sound lead, or a small felt patch, can be a tape job.

Our top picks

Winfox Winfox aluminium flashing roll 0.2 mm

Best overall

Winfox Winfox aluminium flashing roll 0.2 mm
4.8/10about £14.99
View offer
Bostik Bostik Flashband 100 mm x 10 m

Rank 2

Bostik Bostik Flashband 100 mm x 10 m
8.4/10about £13.34
View offer
Target Control Target Control silver butyl 100 mm x 5 m

Best value

Target Control Target Control silver butyl 100 mm x 5 m
6.2/10about £11.39
View offer
On this page
  1. 1.When the tape is the repair
  2. 2.When you still specify lead
  3. 3.Lead-free sheet is not the coil in this set
  4. 4.Which listing to open for a patch
  5. 5.The fork in one pass

When the tape is the repair

Bostik's technical sheet for Flashband is the promise behind the 100 mm by 10 m grey roll at £13.34, with 4.4 from 5,102 reviews. The sheet allows the tape to repair lead inside its own conditions. The surface is clean, dry, and sound. Gaps over 3 mm are filled first. You apply it at about +5°C to +30°C. Porous or cold faces take primer, not left for more than 24 hours, and a seam roller presses the strip down. That is the maker's window, not a counted lifespan. The steps in practice are on how to fit barge flashing. One verified review used the recommended primer at a lean-to junction and still saw the tape slip after about four to five months. Use the tape when the lead or felt is still there and stable. If the lead has torn away, or you are building the detail course by course, the tape's sentence about repair has run out.

When you still specify lead

New work, and failed lead that is no longer a sound sheet, goes back to rolled lead in short pieces. The Lead Sheet Association's guide puts Code 4 at 1.80 mm, the minimum NHBC Standards 7.2.20 uses for aprons and cover flashings. Code 3 is 1.32 mm, and that is the soaker code. Flashings are limited to 1,500 mm. On asphalt and on felt verges the maximum is 1,000 mm. Clips sit at about 300–500 mm. You do not nail through the sheet. A side abutment uses Code 3 soakers between the tiles and a Code 4 cover flashing over them. A 100 mm strip of Flashband does not put a soaker back between the tiles. Chase depth and upstand are not in the sources used for this page, so they are not invented here. If a warranty or an NHBC inspection applies, a substitute needs an approval NHBC accepts. A tiled verge with cracked mortar is not this abutment. That choice sits on dry verge or barge flashing.
Winfox Winfox aluminium flashing roll 0.2 mm

Testsieger

Winfox Winfox aluminium flashing roll 0.2 mm
4.8/10about £14.99
View offer

Lead-free sheet is not the coil in this set

A lead-free flashing roll, of the kind Timloc describes for PbFree, is not one of the three ASINs we kept. On Timloc's page the overlap is 100 mm and the minimum working temperature is 5°C. That 100 mm lap is not Cladco's 200 mm barge overlap, and it is not Flashband's 25 mm lap on plastic. A proprietary replacement still needs an approval where NHBC or a warranty applies. The Winfox coil at £14.99 is titled 0.2 mm aluminium, 4 inches by 20 feet. NHBC's line for aluminium built into masonry is 0.7–0.9 mm. The coil is not self-adhesive, and the package size conflicts with the title. It is not Code 4, not Code 3, and not that lead-free sheet. Skip it when the question is lead or tape.

Which listing to open for a patch

When the lead or felt is still sound, open the Bostik roll. It names lead-flashing repair, at about £1.33 a metre for 10 m. The Target Control silver roll at £11.39 is 5 m, about £2.28 a metre, with an upper temperature of 45°C on the listing and reviews that are often a pond, a freezer, or a pipe. Those reviews are not evidence about a lead abutment. If you still need a folded barge for box profile, that is a different metal order, not a lead code.

The fork in one pass

Sound lead or felt, inside the Bostik window: the 10 m Flashband roll. Missing lead, soakers, or a warranty that has not accepted a substitute: a Code 4 cover and Code 3 soakers, clips, and no nail through the sheet. The 0.2 mm coil stays in the drawer.

Common questions

Can Flashband replace lead?
It can repair lead that is still sound, on the uses Bostik's UK sheet names, if the surface is clean, dry, and stable and you press it with a seam roller inside the sheet's window. It does not replace a new cover flashing and soakers. One primed lean-to slipped after about four to five months.
How long can one piece of lead be?
The Lead Sheet Association guide limits flashings to 1,500 mm. On asphalt and on felt verges the maximum is 1,000 mm. Clips are spaced at about 300–500 mm, and you do not nail through the sheet. Tape laps of 25 mm on plastic do not extend these lead lengths.
What code is a cover flashing, and what code is a soaker?
Code 4 is 1.80 mm, the minimum NHBC Standards 7.2.20 uses for aprons and cover flashings. Code 3 is 1.32 mm, used for soakers. A side abutment needs both. A 100 mm bitumen tape is not either code, and neither is the 0.2 mm coil.
Do I need both a soaker and a cover flashing?
At a side abutment, yes. The soaker sits in the perpendicular joint and turns water onto the tile. The cover flashing dresses over the soakers and into the wall. Flashband on the face of the masonry does not put a soaker back if the originals are missing.
What if the roof is under NHBC?
NHBC Standards 7.2.20 expects an approval NHBC accepts before a proprietary lead replacement is used. Ask the warranty holder before you substitute tape or a lead-free roll. This page does not claim Flashband has that approval. A new abutment on a warranted roof is the case to confirm first.

Related pages

Best barge flashing

Barge flashing

Barge flashing sizes for sheets, tiles, or a patch

How to fit barge flashing on sheets or repair tape

Dry verge or barge flashing for a tiled house gable

Sources

Public UK sources and the amazon.co.uk listings compared on this page. Shelf prices read 19 October 2026. Updated 22.10.2026.

  1. Cladco flashing installation (retrieved 22.10.2026)
  2. Cladco barge datasheet (retrieved 22.10.2026)
  3. NHBC 7.2.19 Fixing tiles and slates (retrieved 22.10.2026)
  4. NHBC 7.2.20 Weathering details (retrieved 22.10.2026)
  5. Lead Sheet Association guide to rolled lead (retrieved 22.10.2026)
  6. Roof Tile Association on BS 5534 (retrieved 22.10.2026)
  7. Bostik Flashband TDS00142 (retrieved 22.10.2026)
  8. HSE roof work (retrieved 22.10.2026)
  9. Sureclad metal bargeboards (retrieved 22.10.2026)