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

“Black Gloss T/Up Paint for Cast Iron Gutters & Pipes” has been added to your basket. View basket
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 +VAT

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

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
  • Gutter & Pipe Brackets
  • Gutters & Pipes
  • Heating
  • Rooflight Openers
All FAQ
What pipe connection sizes do your cast iron hopper heads accept?

What pipe connection sizes do your cast iron hopper heads accept?

The Paxton H82 accepts round, square, and rectangular pipe connections. Round: 65mm, 75mm, and 100mm. Square: 75×75mm, 100×100mm, and 125×125mm. Rectangular: 100×75mm, 125×100mm, and 150×100mm. Bespoke adaptations including double pipe connections are also available on request. Please confirm your required connection type when ordering.

How do I get a price for a rooflight opener?

How do I get a price for a rooflight opener?

Prices for rooflight openers are shown on the product pages at tuscanfoundry.com. For volume orders, project pricing, or compatibility queries, please call 0333 987 4452 or use the contact form on our website.

We are looking to install a new heating system into a Georgian farmhouse and would like to know whether we would be better installing tubular steel column radiators or traditional cast iron radiators.

We are looking to install a new heating system into a Georgian farmhouse and would like to know whether we would be better installing tubular steel column radiators or traditional cast iron radiators.

Cast iron radiators cost no more to run than modern steel or aluminium radiators. Cast iron is a very efficient material at emitting heat, thus you have items like le creuset cast iron pans. Cast iron holds it’s heat extremly well, which means that the radiators stay warm for longer.

Is a cast iron hopper head suitable for use on a listed building?

Is a cast iron hopper head suitable for use on a listed building?

Yes. Cast iron rainwater goods are widely accepted by conservation officers and historic environment bodies as the appropriate material for listed buildings. Tuscan Foundry's hopper heads are manufactured in solid cast iron to BS 460 specification and are suitable for all listed building classes. A linseed oil paint finish is also available, which is particularly appropriate for conservation projects.

Can the louvre airbrick be used to replace an existing cast iron ventilation grille?

Can the louvre airbrick be used to replace an existing cast iron ventilation grille?

Yes. The Louvre Airbrick is dimensioned to standard brick course openings and is suitable for direct replacement of worn, broken, or missing original cast iron louvre grilles. If you are unsure of the size required, measure the opening in the brickwork rather than the existing damaged grille.

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

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

Prices for standard cast iron hopper heads are shown on the product page. For larger quantities, bespoke sizing, heritage colour finishes, or full rainwater system specifications, please call 0333 987 4452 or use the contact form.

What sizes are the Iron Works Hit & Miss Vents available in?

What sizes are the Iron Works Hit & Miss Vents available in?

The Iron Works Patterned Hit & Miss Vents are available in two sizes: 225mm × 82mm (single-course, suitable for standard airbrick positions) and 225mm × 150mm (double-course format). Both sizes are available in all three finishes: Antique Black, Polished Lacquered, and Polished Brass.

My house has a plastic guttering system. Can I use your brackets to replace my exisiting broken ones?

My house has a plastic guttering system. Can I use your brackets to replace my exisiting broken ones?

Our brackets are more commonly used on cast iron rainwater systems. Unlike plastic, cast iron is heavy and the weight keeps the gutter in position. As such our brackets do not normally have retaining clips which could lead to plastic or lightweight gutters blowing out of the bracket. The profile of your gutter should match that of our bracket but without the weight to keep it in place you may well encounter problems in bad weather.

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 building types is the Iron Works Patterned Hit & Miss Vent suited to?

What building types is the Iron Works Patterned Hit & Miss Vent suited to?

The Iron Works Patterned Hit & Miss Vent suits Victorian and Edwardian buildings where decorative cast iron or brass ventilation grilles were part of the original specification — including terrace houses, civic buildings, churches, entrance halls, and estate properties. It is appropriate on listed buildings and conservation area properties as a like-for-like decorative vent replacement, and on new heritage-quality construction where period detailing is required.

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