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Polyester Powder Coating

BBA approved polyester powder coatings, factory applied at Alumasc. 26 standard colours with additional BS or RAL colours available to special order. Can be supplied to resemble black cast iron surface texture aswell.

Systems are available in Plain Mill to apply your own finish

Primary Colours


RAL 9016m


RAL 9017m


Dusty Grey

RAL 7037m

Agate Grey

RAL 7038m

Mouse Grey

RAL 7005m

Platinum Grey

RAL 7036m

Basalt Grey

RAL 7012m

Graphite Grey

RAL 7024m

Slate Grey

RAL 7015m

Anthracite Grey

RAL 7016m

Beige Grey

RAL 7006m

Metallic Silver

RAL 9006m

Metallic Silver (80% Gloss)

RAL 9006m


Brown Beige

RAL 1011m

Cadmium Yellow

RAL 1021m


RAL 2002m

Ruby Red

RAL 3003m

Wine Red

RAL 3005m

Yellow Green

RAL 6018m

Moss Green

RAL 6005m

Flower Blue

RAL 5010m

Sapphire Blue

RAL 5003m

Grey Brown

RAL 8019m

Chocolate Brown

RAL 8017m

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Drainage Calculator

From Alumasc

Alumasc’s leading Drainage Calculator allows Architects, Specifiers and Building Engineer’s to design and quantify all their Rainwater Drainage requirements using this dedicated software.

Key Features:
  • Category 2 and 3 Flat Roof Drainage linked to local rainfall data.
  • Eaves Drainage gutter sizing and pipe calculator for cast and contemporary gutter types.
  • Slotdrain Hydraulic surface water drainage calculator.
To request a copy email

Note: The Alumasc range of calculation tools on the Drainage software are based on BS EN 12056 and it is your responsibility to ensure that the data has been correctly interpreted. Architects, Engineers and other users of this software must satisfy themselves in respect of the adequacy of the design. For complicated calculations, please contact the Alumasc Rainwater or Drainage technical team on 01536 383810 or who may be able to assist.

  • Product Filter

    Infinity Range

  • Product Filter

    Gutter Profiles

    Downpipe Profiles

    Cast Iron Gutters/Downpipes

  • FlushJoint Profile


  • Profile


  • Product Filter

    Gutter Profiles

    Downpipe Profiles

    Alu H Gutter/Downpipe