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15 Inclusion of Sumps


4. Inclusion of sumps at outlet positions. The use of sumps in gutter runs greatly improves the efficiency of the outlets served by the sump, concentrating water at the outlet and helping to increase the water to air mix, allowing more water into the down pipe. These sumps have great benefits; they improve the flow capacity of the gutter at the outlet position, ensure the gutter is freely discharging and improve the general efficiency of the whole system.


They can be installed quite easily either by: -


a) Utilising the space between the top of the down pipe socket and the sole of the existing gutter and by cutting the required amount out of the existing gutter to allow the Unifold® sump and outlet to enter and mate with the existing down pipe socket.


Typical sump unit serving a side box outlet


b) When Unifold® is laid above rigid insulation board the thickness of the insulation board can be used as the sump depth. Even a 20mm deep sump across the sole of the gutter will provide some improvement to flow rates.


5. Inclusion of wiers, chutes and overflows. A Unifold® installation allows the greatest flexibility to correctly include a variety of wiers, chutes and overflows either as "tell tales" for blocked outlets or as a means of removing excess water during storms which threaten to overwhelm the existing outlets.


The UNIFOLD® Solution


01384 252777 Phone us


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UNIFOLD® gutter lining system Inclusion of sumps


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