GENERAL

Gravity Rainwater Drainage System.
Rainwater outlets, gutters, pipework and accessories as per detail sections below.

SYSTEM PERFORMANCE

Design Standard: To BS EN 12056-3:2000, clauses 3-7 and National Annexes. Collection and Distribution of Rainwater: Complete, and without leakage or noise nuisance.
Design Parameters: Design rate of rainfall as per B5 EN 12056-3:2000, National Annex NB 2 - Category 1

PRODUCTS

HERITAGE FOUNDRY GUTTER

Gutter and fittings to: BS 8530 (formerly BS 2997)
Reference: HERITAGE FOUNDRY rainwater system
Profile: Half Round / Beaded Half Round / Deep Run Half Round / Victorian Ogee / Traditional Ogee / Moulded Ogee
Size: 100mm / 114mm / 125mm / 150mm / 100 x 75mm / 125 x 75mm / 125 x 100mm / 150 x 100mm Outlet Size: 63mm / 75mm / 100mm / 75 x 75mm / 100 x 75mm / 100 x 100mm
Manufacture: Complies with BS 460:2000 Cast Iron Rainwater Goods.
Finish: Heritage Transit Primed (for Site Painting) or Heritage Premier 4 Coat Factory Painted Finish.
Colour: To be advised
Jointing: Gutter lengths or fittings are overlapped at the joint with a spigot and socket. Slots are provided for fixing using M6 mushroom head Zinc Plated nuts and washers. Seal evenly across the joints with Dow Corning 791.
Fixing: Fascia bracket fixed at 915mm centres and at each fitting using number 12x38mm round head twin thread screws and washers bright zinc plated.

PRODUCTS

HERITAGE FOUNDRY DOWNPIPE

Reference: HERITAGE FOUNDRY rainwater pipe c/w Eared / plain non eared / Collars, fittings and accessories to: BS 2997 Size: 63mm / 75mm / 100mm / 75 x 75mm / 100 x 75mm / 100 x 100mm
Manufacture: Complies with BS 460:2000 Cast Iron Rainwater Goods.
Finish: Heritage Transit Primed (for Site Painting) or Heritage Premier 4 Coat Factory Painted Finish.
Colour: To be advised
Fixing: Pipe clip fixed at maximum 1.83m centres. Plug and screw to wall with M8 x 75mm Coach Bolt bright zinc plated to BS 1706:1960 Class ZN3. Seal joints with Dow corning 791 silicone sealant allowing for a 3-4 mm vertical thermal movement gap.
Accessories: Bends, Branches, Access Pipes, Offsets, Shoes, Rainwater Heads.

CARE & MAINTENANCE

ROUTINE INSPECTION

Regularly clean out rainwater heads and gutters and ensure that downpipes are clear at all times. Check that joints and fixings are secure by periodic inspection, not less than twice a year, and preferably at the beginning of autumn and again at the end of winter. Sand cast iron is a reasonable standard of maintenance, an installation should have a life of at least 40 years.

LADDERS

Even with a well fixed installation, ladders should not be rested against the gutter.

REPAINTING

The final paint finish on factory-primed cast iron must be maintained to give the longest service life. A well applied paint system might be expected to last from 6-8 years on cast iron without further attention. Regular inspection is recommended. It is recommended that pre-finished cast iron is maintained as above. It is important that any installation damage to the coating is repaired with the appropriate touch-up paint. Any cut pieces exposing bare metal must be coated with primer and top coat.

OTHER MAINTENANCE OPERATIONS

When cleaning adjacent surfaces, cast iron should be protected against all acids and concentrated alkalis.