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Roof Drainage Calculators

Our online tools have been designed with simplicity in mind removing the need for any prior specialist industry knowledge. The tools guide the user step by step allowing fast and simple roof drainage design whilst ensuring full compliance with BS EN12056-3 rainwater drainage design standard. Upon completion, a full set of rainwater drainage design calculations are provided confirming the suitability of products.

Aluminium guttering by Marley Alutec Moreteyne Manor Bedfordshire

Gutter and Downpipe Calculator

Calculate Gutter and Downpipe requirements

Flatroof Calculator

Calculate flatroof requirements

Calculate flatroof requirements

Product Specification

Produce a product specification document based on a wide range of aluminium rainwater products and eaves solutions

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Marley Alutec case studies
Requirements List

Add product qty and all relevant information to your requirement list ready to send for an estimate

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