Sourcing zinc roof ridge caps from China

Duty and classification for formed zinc caps

Heading 7907 covers other articles of zinc. Finished zinc roof ridge caps should be checked against 7907 00 00 90. The table shows product variants sharing that tariff line, rather than separate commodity codes. Zinc sheet and strip are classified separately, and galvanised steel is steel. See the wider zinc roofing tiles guide.

Read from the UK Trade Tariff on 4 October 2026, the supplied lines carry 0% duty for goods from China, with no anti-dumping or countervailing measure recorded and no suspension listed. The tariff attaches import and export waste controls. Waste shipment controls apply only to waste. For waste from China entering England under notification controls, the exporter applies through the dispatch authority and shipment awaits the relevant authorities' consent.

For new caps, retain the product description and intended use, and ask your customs broker to confirm how the attached waste control is addressed. If the shipment includes discarded material, confirm the waste requirements before dispatch. Confirm the commodity code from the material, finished shape and use, rather than accepting a supplier's code for zinc sheet.

Ridge profile, joints and surface finish

Specify zinc composition, sheet thickness, cap length, roof pitch, wing widths, bend radii and edge returns on an approved drawing. Show the overlap or seam detail, fixing method and allowance for movement. Agree whether the finish is natural or pre-weathered, and approve a sample alongside the adjoining roof covering.

Before sale in Great Britain, ask your compliance adviser to identify the applicable standard or technical assessment route for the actual cap. CE marking remains accepted where EU requirements are met. Under the CE route, manufacturers whose products are covered by a harmonised standard or have a European Technical Assessment must draw up a declaration of performance. Match the supporting documents to the cap profile and intended use.

Worked duty example

Illustrative example, not a quote: Illustrative batch of formed zinc roof ridge caps for a roofing contractor under 7907 00 00 90, invoiced at £9,000 free on board, with £900 of freight and insurance to the UK. The customs value is £9,900. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £9,900, so it is £1,980. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Material: compare the batch material certificate with the agreed composition and measure thickness away from folded edges.

Profile: measure the cap angle, wing widths, length and edge returns against the drawing; trial-fit samples on the intended ridge detail.

Joints: assemble adjoining caps and check overlap, seam engagement, fixing clearance and the agreed provision for movement.

Finish and packing: compare colour with the approved sample, check bends for cracks and faces for dents or wet-storage staining, and inspect separators and bundle supports.

What goes wrong

A cap can match the overall width yet sit incorrectly because its bend angle or edge return differs from the drawing. Short overlaps, misplaced holes and distorted ends can leave joints difficult to close. Approve an assembled ridge sample before releasing the production batch.

Mixed surface finishes produce visible colour changes along the ridge. Tight packing can dent the crown, while wet bundles can arrive stained. Record arrival condition before unpacking and compare affected caps with retained samples. Use quality inspection guidance to turn the drawing and approved sample into batch checks.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.