We offer a full design service for gravity-fed drainage where we can assess the size and shape of your gutter, roof area, and outlet requirements. We can allow for standard outlets, side outlets, hopper boxes, sump boxes, and leaf guards. We also offer a design service for our RainPulse, single stack full bore system which can aid the reduction of outlets/gutter, rainwater pipes, and ground drainage. RainPulse is a much higher performing system that allows outlet numbers and sizes to be reduced. Both systems are designed to the BS EN 12056:3-2000. For more information on drainage calculations and the design requirements please contact one of our sales team or technical team. Please note we are unable to design a full Siphonic drainage system however our gutters are compatible with the system.