Terrain Gravity Rainwater

General
Installation

A fully integrated system of gutter and downpipe assemblies, including all the fittings and accessories needed for easy installation, Terrain Gravity Rainwater offers a wide choice of gutter profiles in robust PVCu to help you achieve your performance and design objectives, no matter what the project. The Terrain Rainwater range of products can be used in residential and commercial applications.

Polypipe Terrain products are 100% LEAD FREE. We pioneered the development of PVC material for the manufacturing of drainage pipes and fittings and remain at the forefront of the industry across the globe. Utilising a lead-free material composition contributes significantly to an environmentally friendly manufacturing process and gives a finished product that is fully recyclable in accordance with International Standards.

To download the complete Terrain Gravity Rainwater products dimensional data, please click here.

To download product dimensional data relating to specific systems, please click on the links below:

Outlets are available for all flat roofs and balcony structures and drain vent systems. Download Terrain Roof and Balcony Outlets. For large roof areas please use Terrain Hydromax

Large square profile. A high capacity system ideal for commercial properties and large houses. Can drain roof areas up to 294 m2 with a single downpipe. Capacity per outlet 6.11 litres/sec Download Terrain Streamline System – 137 mm

Ideal for houses, smaller commercial buildings and offices. Can drain roof areas up to 122 m2 with a single downpipe. Capacity per outlet 2.54 litres/sec. Download Terrain Crescent Rainwater Systems - 110mm

Square profile. A popular, modern system suiting domestic houses, bungalows and conservatories. Can drain roof areas up to 149m2 with a single downpipe. Capacity per outlet 3.11 litres/sec. Download Terrain Corniche Rainwater Systems

Deep elliptical profile. A high capacity system suiting all styles of property. Ideal for large roof areas or areas with higher than normal rainfall. Can drain roof areas up to 266m2 with a single downpipe. Capacity per outlet 5.53 litres/sec. Download Terrain Rapidflow Rainwater Systems – 131 mm

Ogee profile. Ideal for the more distinctive house, also suiting bungalows and conservatories. Can drain roof areas up to 242m2 with a single downpipe. Capacity per outlet 5.04 litres/sec. Download Terrain Omega Rainwater Systems – 122 mm

Terrain Rainwater Downpipe Systems - 62 mm

Terrain Rainwater Downpipe Systems - 68 mm

Terrain Rainwater Downpipe Systems - 75 mm

Terrain Rainwater Downpipe Systems - 82 mm

Terrain Rainwater Downpipe Systems - 110 mm

Terrain Rainwater Accessories

The Terrain Gravity Rainwater systems are engineered to make the installation easy. The system features captive seals for performance and security, plus a combination clipping system and dry jointed downpipe spigot sockets for ease of installation.

As a general rule, when fixing gutter, allowance must be made for thermal movement and all Terrain outlets, angles and joint brackets are engraved with the appropriate expansion gaps. It is important that the gutter is correctly fitted into these fittings taking due care to place the cut end of the gutter on the line marked.

It is important that the expansion gaps are maintained when gutter is fitted and must not be spaced to exceed 4 metres/13ft centres. In the case of dry jointing downpipe each fitting clip has a sight hole provided on the front of it. (2113.25C, 2216.23 and the 82mm and 110mm fitting clips do not have sight holes.) The purpose of the sight holes is to allow sight of the top of the pipe being fitted from below. When this pipe end obscures half of the aperture you have the correct expansion gap. The maximum distance between expansion joints should not exceed 5.5 metres/18ft.