Roof Drains

The primary purpose of any roof drainage system is to remove water from roofs as quickly as possible in a controlled and predictable way.

Factors including roof outlet size, shape, appearance and anticipated drainage requirements need to be taken into account. Design is usually the responsibility of consulting engineers familiar with the roof construction, piping systems and additional functions intended for particular roofs.

Design Considerations Installation Guide

Building regulations / standards

International regulations and local building codes must be observed for all drainage installations. Local rainfall rates should be taken into account.

Roof Construction

Roof outlets are not multi-purpose and products are designed for use with specific types of roof construction (e.g. cold roof, warm roof, inverted roof parapet roof and balconies).

The depth of structural slab, thickness and location of insulation and the type and location of waterproof membrane are factors to consider at the outset of any drainage selection.

Inverted Roof drain assembly – fixed dome 220mm and 150mm gravel guard, medium sump body with clamp, vertical spigot outlet 110mm

33.0301

Warm Roof drain assembly – fixed dome 220mm circular, large sump body with clamp, vertical spigot outlet 110mm

33.0121

Warm Roof drain assembly – cast iron grating, fixed 240mm circular, medium sump body with clamp, vertical spigot outlet 110mm

33.0101

Cold Roof drain assembly – fixed dome 220mm circular, medium sump body with clamp, vertical spigot outlet 110mm

33.0031

Cold Roof drain assembly – cast iron grating, fixed 240mm circular, medium sump body with clamp, vertical spigot outlet 110mm

33.0011

Inverted Roof drain assembly – fixed dome 220mm and 150mm gravel guard, medium sump body with clamp, horizontal threaded outlet 4″ BSP

33.0314

Warm Roof drain assembly – fixed dome 220mm circular, large sump body with clamp, horizontal threaded outlet 4″ BSP

33.0134

Warm Roof drain assembly – cast iron grating, fixed 240mm circular, medium sump body with clamp, horizontal threaded outlet 4″ BSP

33.0114

Cold Roof drain assembly – fixed dome 220mm circular, medium sump body with clamp, horizontal threaded outlet 4″ BSP

33.0044

Cold Roof drain assembly, cast iron grating, fixed 240mm circular, medium sump body with clamp, horizontal threaded outlet 4″ BSP

33.0024

Medium cold roof drain assembly domed grating spigot outlet

33.0031

Medium cold roof drain assembly flat grating spigot outlet

33.0011

Frost 4″ X 3″ Threaded Reducing Bush

31.9117

Frost spigot adaptor BSP4 to 110mm Ensign BS416/2

31.6521

Frost Spigot Adaptor BSP4 to 110mm plastic

31.6511

Frost extension collar height adjustable for large sump bodies

31.6010

Frost gravel guard 260mm diameter stainless steel 150mm high

33.9415

Frost gravel guard 250mm diameter stainless steel 150mm high

33.9310

Downspout nozzle with horizontal threaded outlet

33.0444

Small balcony outlet drain assembly threaded outlet BSP 4

33.0434

Parapet roof balcony outlet assembly 90-degree grate threaded outlet

33.0414.9

Parapet roof balcony outlet assembly 45-degree grate threaded outlet

33.0414

Large inverted roof drain assembly 150mm spigot outlet

33.0329

Large inverted roof drain assembly 320mm flat grating 163mm spigot outlet

33.0369

Large inverted roof drain assembly flat grating 163mm spigot outlet

33.0359

Large cold roof drain assembly domed grating threaded outlet BSP 6

33.0466

Large cold roof drain assembly domed grating 150mm spigot outlet

33.0469

Large cold roof drain assembly domed grating threaded outlet BSP 6

33.0066

Large cold roof drain assembly domed grating 150mm spigot outlet

33.0069

Medium cold roof drain assembly domed grating threaded outlet

33.0034

Large cold roof drain assembly flat grating 150mm spigot outlet

33.0059

Large cold roof drain assembly flat grating 100mm spigot outlet

33.0051

Large cold roof drain assembly flat grating threaded outlet BSP 6

33.0056

Large cold roof drain assembly flat grating threaded outlet BSP 4

33.0054

Medium cold roof drain assembly flat grating threaded outlet

33.0014

Large cold roof drain assembly domed grating threaded outlet

33.0464

Large cold roof drain assembly domed grating spigot outlet

33.0461

Planter drain, clamp stainless steel gravel guard, 2 fast fit couplings and pvc stand pipe, medium sump body cast iron body, 100mm Spigot outlet

33.0451

Small balcony outlet drain assembly threaded outlet BSP 3

33.0433

Parapet roof balcony outlet assembly 45-degree grate spigot outlet

33.0411

Parapet roof balcony outlet assembly 90-degree grate spigot outlet

33.0411.9

Large inverted roof drain assembly 320mm flat grating threaded outlet

33.0364

Large inverted roof drain assembly 320mm flat grating spigot outlet

33.0361

Large inverted roof drain assembly 200mm flat grating threaded outlet

33.0354

Large inverted roof drain assembly 200mm flat grating spigot outlet

33.0351

Large inverted roof drain assembly threaded outlet

33.0324

Large inverted roof drain assembly spigot outlet

33.0321

Medium inverted roof drain assembly threaded outlet

33.0304

Warm roof medium-duty drain assembly

33.0124

Medium warm roof flat grating drain assembly threaded outlet

33.0104

Cold roof medium-duty drain assembly threaded outlet

33.0064

Cold roof medium-duty drain assembly spigot outlet

33.0061

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