Capsol Plumbing Solders — UK Manufactured Plumbing Solder Wire & Sticks
The Capsol range is Heaps, Arnold & Heaps Ltd’s family of plumbing solders, manufactured at our Rotherham facility for UK trade plumbers, heating engineers, plumbing merchants and heritage plumbing specialists. We supply both modern lead-free WRAS-approved plumbing solder UK-wide and traditional tin-lead alloys for heritage and specialist plumbing applications.
With over 250 years of metallurgical experience, we cast and extrude plumbing solder in wire, stick and bar formats to match every common plumbing application — from copper pipe end-feed joints to traditional wiped lead joints on heritage installations.
Why Choose Capsol Plumbing Solders?
- UK manufactured at our Rotherham facility — full traceability
- Lead-free WRAS-compliant solders for modern drinking water plumbing
- Traditional tin-lead alloys for heritage plumbing and lead pipe work
- Solder wire and sticks in trade-standard pack sizes
- Consistent alloy composition for predictable flow and wetting
- Documentation supplied with WRAS approval and material certificates
- Trade pricing on bulk orders for merchants and large plumbing operations
- Over 250 years of expertise — established 1770
Lead-Free Plumbing Solder — WRAS Approved
For modern drinking water plumbing installations in the UK, lead-free solder is required by Water Regulations. Our lead-free Capsol solders are formulated to meet WRAS (Water Regulations Advisory Scheme) requirements while delivering the flow characteristics and joint strength UK plumbers expect.
Lead-Free Solder Applications
- Drinking water plumbing — copper pipe jointing for cold and hot water supply
- Domestic central heating — boiler, radiator and pipework installations
- Commercial plumbing installations
- New build construction — all WRAS-compliant water systems
- Replacement and refurbishment — modernising older non-compliant systems
Typical Lead-Free Alloy Compositions
Modern lead-free plumbing solders are typically tin-copper-silver alloys, formulated to provide:
- Compliance with Water Regulations and WRAS approval requirements
- Suitable melting range for standard blow-torch joint making
- Strong, leak-tight joints on copper pipework
- Good flow into joint capillary gaps
- Predictable solidification for clean finished joints
Traditional Tin-Lead Plumbing Solder
For heritage plumbing work, lead pipe restoration and specialist applications where lead-free solders aren’t appropriate, we continue to manufacture traditional tin-lead plumbing solders in time-honoured formulations.
Traditional Solder Applications
- Lead pipe repair — Listed building plumbing maintenance
- Heritage building restoration — keeping original lead systems in use
- Wiped joint work — traditional plumber’s craft applications
- Lead roofing — soldering lead sheet joints, flashings and aprons
- Sheet lead fabrication — gutters, hoppers and decorative lead work
- Museum and conservation work — historic artefact and equipment restoration
Traditional Solder Alloy Options
- 50/50 tin-lead — balanced flow and working time for general plumbing
- 40/60 tin-lead — wider plastic range for wiped joint manipulation
- 30/70 tin-lead — traditional plumber’s solder for heavy lead work
- Bespoke ratios — for specialist conservation applications
Traditional tin-lead solders are NOT suitable for drinking water plumbing under modern UK Water Regulations — these are for non-potable, heritage, structural or decorative lead work only.
Solder Wire Formats
Capsol solder wire is supplied in trade-standard formats:
- Standard reels — for trade and merchant supply
- Bulk reels — for high-volume plumbing operations
- Trade pack quantities — for plumbers’ merchants
- Various gauges — from fine wire for small joints to heavier gauges for larger pipework
Solder Sticks
Cast solder sticks for traditional plumbing and sheet lead work:
- Cast tin-lead alloy in stick form
- Standard sizes for trade use
- Bulk packs available for trade and industrial supply
- Available in multiple alloy ratios for different applications
End Feed Capillary Joint Plumbing
The most common modern application for plumbing solder in UK installations is end feed copper pipe jointing. The plumber heats the pipe and fitting with a blow torch, then introduces solder wire to the joint where capillary action draws the molten solder into the gap, forming a leak-tight joint as it cools.
Our lead-free Capsol solder wire is formulated specifically for this application:
- Flows readily into joint capillary gaps at standard blow-torch temperatures
- Wets cleanly to copper for strong metallurgical bonding
- Solidifies cleanly without excessive build-up or dribbling
- Compatible with all standard end feed copper fittings
- Works with all WRAS-approved fluxes
Heritage Plumbing & Listed Buildings
Listed building plumbing maintenance is a specialist niche where modern lead-free solder isn’t always appropriate. Original lead supply pipes, lead roof drainage and decorative lead work all need traditional tin-lead solder for any repair to remain consistent with the original installation and survive conservation officer scrutiny.
For Listed building work and historic plumbing restoration, our traditional tin-lead solders provide the appropriate material specification. Our UK manufacturing and documentation simplify the conservation case file build for restoration projects.
Who We Supply
- Trade plumbers and heating engineers
- Plumbing merchants — for trade counter and bulk supply
- Plumbing and heating contractors — new build and refurbishment
- Heritage building maintenance contractors
- Listed building restoration specialists
- Lead roofing contractors
- Sheet metal fabricators — for lead and zinc work
- Conservation and museum services
- Plumbing training colleges and apprenticeship programmes
- Industrial maintenance teams
Material Quality & Compliance Documentation
Plumbing solder quality matters for both performance and compliance. All Capsol solders are:
- Manufactured at our UK facility from refined source materials
- Composition-tested before forming
- Lead-free variants WRAS-approved for drinking water applications
- Supplied with certificates of analysis stating exact composition
- Batch-numbered for traceability
- Packaged to prevent oxidation during transport and storage
- Documentation suitable for inclusion in compliance records and conservation case files
How to Order Capsol Plumbing Solders
Plumbing solder orders are processed on a quote-led basis. For merchant and trade supply, we hold standing arrangements for repeat orders:
- Submit a quote request with your alloy specification (lead-free or traditional), format (wire/stick/bar), gauge or size, and quantity
- We respond within 1 working day with pricing and lead time
- For trade accounts we set up scheduled deliveries and credit terms
- Solder is manufactured, inspected and dispatched with documentation
For trade accounts and ongoing supply arrangements, contact our team directly to discuss credit terms and BACS payment.
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