Sourcing copper roofing sheet from China

0% duty on copper roofing sheet

Read from the UK Trade Tariff on 1 October 2026, heading 7409 covers copper plates, sheets and strip thicker than 0.15 mm. Refined copper roofing stock falls within the coil or other refined-copper lines according to its supplied form. The alloy rows are relevant only where the roof designer expressly specifies those materials.

Every listed line carries 0% duty for goods from China. The supplied tariff data lists no anti-dumping or countervailing measures and no attached import controls. The refined-copper lines also contain narrowly described technical suspensions at 0.00 %; these do not reduce the ordinary zero rate and should not be treated as general roofing-sheet concessions.

Confirm composition, thickness and supplied form through finding your commodity code. For other materials within the heading, see the copper and brass sheet and strip guide. Duty is separate from import VAT; see UK import duty and VAT.

Specify sheet for roof seams and finish

Specify copper sheet for building to BS EN 1172, with the material designation, temper, thickness and tolerances written into the order. State flat-sheet dimensions or coil width, weight and inner diameter. Agree the edge condition and ask the installer to approve a sample folded into the intended seam before approving production.

Choose the surface explicitly: natural copper, pre-oxidised or pre-patinated. Approve a physical finish sample and agree acceptable variation between sheets, protective film and interleaving. Ask for batch-linked mill certificates and packing that protects corners, edges and visible faces.

For supply in Great Britain, CE marking continues to be available for construction products. Check the applicable marking route for the exact supplied product and intended use before ordering. Ask the supplier to identify any relevant designated standard or technical assessment and provide the supporting performance documentation for review.

Worked duty example

Illustrative example, not a quote: Illustrative order: 2 tonnes of flat refined copper roofing sheet under 7409 19 00 00, invoiced at £22,000 free on board, with £800 of freight and insurance to the UK. The customs value is £22,800. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £22,800, so it is £4,560. 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 and forming: match the mill certificate to the delivered batch and ordered grade and temper; fold sample pieces into the agreed roof seam and look for cracking.

Dimensions: measure thickness across the width, check sheet size or coil width, and inspect flatness, edge burrs and damaged corners.

Finish: compare visible faces with the approved sample; inspect scratches, stains, uneven patina and differences between batches in daylight.

Packing and records: inspect wrapping for moisture and abrasion, check batch identification, and photograph damage before unpacking. Plan the checks with our quality inspection guide.

What goes wrong

A supplier may offer general-purpose copper sheet with the wrong temper for seam folding, or deliver material at the thin end of the agreed tolerance. Samples can look acceptable while production sheets show scratches, inconsistent patina or edge damage. Make the approved material, forming sample and finish sample part of the purchase specification.

A mill certificate records material properties; review the construction-product marking route and supporting documents separately. Ask the roof designer to approve any alloy substitution and agree how sheets from different finish batches will be allocated before installation.

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.