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Digital Subscriptions > Build It > May 2019 > Guide to rainwater goods & drainage

Guide to rainwater goods & drainage

It may seem like little more than a finishing touch, but a lot of detail goes into specifying the right rainwater management setup. Tim Doherty sets out what you need to know
Brett Martin’s PVCu Cascade system replicates the look of traditional cast iron, while offering straightforward clip-fit installation

Rainwater goods not only protect your home against water damage, they form part of the main aesthetic of the house. So whether you’re building from scratch or renovating an existing property, it’s important to consider this aspect at the design stage, so that you can accommodate all the installation details and pick materials and finishes that meet your expectations for style and performance. The setup will also need to be hooked up to a suitablyplanned drainage system. It’s not rocket science, but it does need to be properly thought through.

Selecting materials

Unless you specify otherwise, most builders will default to plastic rainwater goods. These are affordable, value-formoney and easy to install – especially on buildings that have clear vertical fascias, standard roof overhangs and brickwork facades. Fitting downpipes becomes a bit more complicated when the external walls have more than one finish (such as tile hanging at first floor, interrupted by a corbeled brick band at intermediate floor level), or where open rafter feet dictate the use of nonstandard metal brackets fixed to the side of the rafters to support gutters. But in general, plastic rainwater goods are simple to clip together, make waterproof and assemble.

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About Build It

Build It is Britain’s longest running self build magazine. Each issue is packed full of inspirational and informative readers’ homes, as well as expert advice on issues from budgets and planning to project management and design. This month: - Beginners guide to extensions - Energy efficient masonry - Renovating a Victorian house - How to maximise your self build budget - Dealing with planning conditions