N. C. Windows
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The Complete Window, Door, Fascia, Guttering & Conservatory service |
PVC-U Rainwater System
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Select one of the four systems below for full details
Information
Design and Installation
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To select the gutter size appropriate to your requirements, two factors must be taken into consideration. |
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Roof Area
The effective roof area can be calculated by using the following formula:
(B+(C/2)) x length of roof = Area in sq Meters

Gutter Flow Capacity
Gutter flow capacity is dependant upon system type, outlet position and whether the gutter is laid level or to a specified fall. The table below gives the required information based upon a Rainfall intensity of 75mm per hour and recommendations from BS 6367: 1983.

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