H31Metal profiled/ flat sheet cladding /covering

H72ALUMINIUM STRIP/SHEET COVERINGS/FLASHINGS

To be read with Preliminaries/General conditions.

TYPE(S) OF ALUMINIUM WORK

470R10/SKYLINE FASCIA

  • Drawing reference(s): ______.
  • Manufacturer and reference: Alumasc Exterior Building Products Ltd, White House Works, Bold Road, Sutton, St Helens, Merseyside WA9 4JG. Tel: 01744 648400, Fax: 01744 648401. Email: ; Web:
  • Material/grade: Aluminium
  • Shape: [Parapet / Chisel / Bullnose / Aerofoil]
  • Size: To be determined
  • Gauge: [2 / 3] mm.
  • Finish/Colour: Polyester powder coated to BS 6496 – Colour TBC
  • Accessories: [Angles / Corners / Stop Ends]
  • Other requirements: [ ]
  • Method of jointing: Butt strap
  • Method of support/fixing: [Fixed direct to structure at centres to be determined Fixed to framework]

480R10/SKYLINE SOFFIT PLANK:

  • Drawing reference(s): ______.
  • Manufacturer and reference: Alumasc Exterior Building Products Ltd, White House Works, Bold Road, Sutton, St Helens, Merseyside WA9 4JG. Tel: 01744 648400, Fax: 01744 648401. Email: ; Web:
  • Material/grade: Aluminium
  • Shape: Secret-fix profile as Alumasc drawing
  • Size: 600mm width module
  • Gauge: 2mm.
  • Finish/Colour: Polyester powder coated to BS 6496 – Colour TBC
  • Accessories: Trims
  • Other requirements: [ ]
  • Method of jointing: Secret fix arrangement – refer to Alumasc for further details
  • Method of support/fixing: Fixed direct to structure at centres to be determined

GENERAL REQUIREMENTS/PREPARATORY WORK

510WORKMANSHIP GENERALLY:

  • Comply generally with CP 143:Part 15 unless specified or agreed otherwise.
  • Fabricate and fix aluminium coverings/flashings to provide a secure, free draining and completely weatherproof installation.
  • Operatives must be trained in the application of aluminium coverings/flashings. Submit records of their experience to the CA on request.
  • Measure, mark, cut and form aluminium prior to assembly wherever possible.
  • Mark out aluminium with pencil, chalk or crayon. Do not use scribers or other sharp instruments without approval.
  • Fold coverings/flashings with mechanical or manual presses to give straight, regular and tight bends, leaving panels free from ripples, kinks, buckling and cracks. Use hand tools only for folding details that cannot be pressed.
  • Use in situ welding only with approval and subject to completion of a 'hot work permit' and compliance with its conditions.
  • Aluminium surfaces to be embedded in concrete or mortar must be fully coated with high build bitumen based paint, after folding.
  • Fold under or remove any sharp metal edges as work proceeds.
  • Do not use sealants in joints to attain waterproofing.
  • Ensure that finished aluminium work is fully supported, adequately fixed to resist wind uplift but also able to accommodate thermal movement without distortion or stress.
  • Ensure that finished aluminium work is protected against staining, discolouration and damage by subsequent works.

535INTEGRITY OF ALUMINIUM:

  • Design aluminium coverings/flashings and methods of attachment to prevent loss of weatherproofing and permanent deformation due to wind pressure or suction.
  • Calculate wind loads in accordance with BS 6399:Part 2.

555LAYOUT: Agree setting out of longitudinal and cross joints with the CA before beginning work.

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