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Established 1893   |   BS 460:2002 Certified   |   UK & International Supply   |   Expert Technical Support   |   0333 987 4452

Shop / Cast Iron Gutters & Pipes / Cast Iron Gutter & Pipe Accessories / U9 Black Silicone
U9 Black Silicone_cast iron gutter sealant
CODE U9BL Category Cast Iron Gutter & Pipe Accessories

U9 Black Silicone

£12.60 ex VAT (£15.12 inc VAT)

Low modulas black silicone for common half round, ogee, deep half round, moulded G46 cast iron guttering and round pipes.

UK delivery from £30. Fittings are despatched boxed. See delivery rates.

U9 Black Silicone is a low-modulus black silicone sealant formulated for jointing cast iron gutters and pipes. Low-modulus silicone remains flexible after curing, accommodating the thermal expansion and contraction that cast iron guttering undergoes through temperature cycles across the year without the joint cracking or losing adhesion. This flexibility makes it significantly more durable than standard frame or construction silicones on cast iron joints.

Supplied in black to match the standard factory black finish of cast iron gutters and pipes. Compatible with all standard cast iron gutter profiles: common half round, beaded half round, deep half round, moulded ogee, G46 moulded ogee, Notts OG, and No.46 moulded. Also suitable for ogee and moulded gutter joints where a flexible waterproof seal is required. For specification support, call 0333 987 4452.

Additional information

FAQ Categories

  • Cast Iron Airbricks
  • Cast Iron Airvents
  • Cast Iron Hopper Heads
  • General
  • Gutter & Pipe Brackets
  • Gutters & Pipes
  • Heating
  • Rooflight Openers
  • Soil Pipes
All FAQ
Do you supply cast iron guttering for churches and ecclesiastical buildings?

Do you supply cast iron guttering for churches and ecclesiastical buildings?

Yes. Churches and ecclesiastical buildings are one of our most common project types. We regularly supply large sand cast gutters, rectangular and square downpipes, and bespoke hopper heads for church restorations. Many churches have non-standard profiles that require copy casting. We work directly with architects, church fabric advisors, and quinquennial inspection surveyors. Historic England and many Diocesan Advisory Committees specify cast iron as the appropriate material for listed ecclesiastical buildings.

Is a brass rooflight opener handle suitable for a listed building?

Is a brass rooflight opener handle suitable for a listed building?

Yes. Polished brass ironmongery is historically appropriate for period buildings and is generally acceptable to conservation officers for listed building projects. If you require confirmation for your specific scheme, we are happy to advise — call 0333 987 4452.

What sizes are available for the School Board Airbrick?

What sizes are available for the School Board Airbrick?

The School Board Airbrick (F020801AFC) is available in three standard sizes: 225mm × 75mm, 225mm × 150mm, and 225mm × 225mm. These correspond to one-, two-, and three-brick-course heights and allow ventilation requirements to be met across a range of subfloor and wall opening sizes.

What is BS 460:2002?

What is BS 460:2002?

BS 460:2002 is the British Standard governing cast iron rainwater goods — gutters, pipes, and fittings. It sets the dimensional tolerances, materials, and performance requirements a component must meet, so that joints seal, sections align, and the system performs as a whole rather than as isolated parts. All Tuscan Foundry Products components are manufactured to comply with BS 460:2002, which is worth citing directly in specification documents and listed building consent applications. The same manufacturing standard applies to bespoke and copy-cast work, even where the profile itself isn't from our standard range.

Which rooflight opener is best for a skylight above a kitchen sink or worktop?

Which rooflight opener is best for a skylight above a kitchen sink or worktop?

For rooflights directly above a worktop or sink, a telescopic screw-jack hand winder is the most practical choice. Available in polished brass, satin chrome, and polished chrome, these openers allow controlled ventilation from a fixed handle position without requiring a pole. The 150mm or 250mm size is typically appropriate for standard-height kitchen rooflights.

Are ornamental cast iron vents suitable for listed buildings?

Are ornamental cast iron vents suitable for listed buildings?

Yes. Cast iron ornamental vents in period patterns are frequently specified on listed buildings and conservation area properties as like-for-like replacements for original Victorian ironwork. Conservation officers generally accept cast iron in period patterns without objection. We can supply specifications to support planning and listed building consent applications.

What size cast iron hopper head do I need for my project?

What size cast iron hopper head do I need for my project?

The right size depends on the width of your gutter run and the volume of water you need to collect. The Strayton H42A is available in four widths: 305mm (12"), 355mm (14"), 457mm (18"), and 610mm (24"). As a general guide, wider hoppers suit larger roof areas and heavier rainfall zones. If you are unsure, our team can advise based on your gutter profile and catchment area — call 0333 987 4452.

How do I get a price for a cast iron hopper head?

How do I get a price for a cast iron hopper head?

Please call 0333 987 4452 or use the contact form with the size, quantity and connection details, and we'll provide a quotation.

What building types is the Iron Works Hit & Miss Vent in Polished Brass suited to?

What building types is the Iron Works Hit & Miss Vent in Polished Brass suited to?

The Polished Brass finish suits buildings where brass metalwork was standard — formal Victorian terrace housing, civic and institutional buildings, and high-quality estate architecture. It is appropriate on listed buildings and conservation properties where the wider ironmongery specification is in brass and a matching material is required.

What is the difference between the Antique Black, Polished Lacquered, and Polished Brass finishes?

What is the difference between the Antique Black, Polished Lacquered, and Polished Brass finishes?

The Antique Black finish is cast iron with a blackened surface — the most historically accurate finish for cast iron ironwork and the most appropriate for the majority of heritage applications. Polished Lacquered is cast iron with a bright polished surface sealed with clear lacquer, suited to interiors and sheltered locations where polished ironwork is the specification. Polished Brass is solid polished brass throughout — the correct choice where existing building fittings are in brass or where a warm metal tone is required.

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    Add to basket
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Find out more about our products by giving us a call
0333 987 4452

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