● Suitable for all types of buildings including domestic, commercial and industrial.
● Practical rainwater handling systems which do not conduct lightning as metal systems do.
● Components have a consistent colouring and are essentially maintenance free.
● Tough and durable, yet lightweight for ease of installation.
● Products will withstand normal ladder weight.
● High gloss finish with blemish free surface providing excellent all round weathering and colour fastness.
● Comprehensive range of systems, colours and fittings to provide solutions to all installation requirements.
● All large fittings are packaged individually to protect their surface from scratch marks.
● Cost effective solution to rainwater collection and drainage.
● Well defined stylish contours ensure a seamless match with the architecture of all properties, new or old.
BSI Kitemark number: KM 501316 – BS EN 607, BS EN 12200 and BS EN 1462 Plastic rainwater, piping and guttering systems for above ground use – Unplasticized poly vinyl chloride (PVC-U) (with the exception of Miniflo and “Cast iron” Style)
BS EN 12200 – Plastic rainwater piping systems for above ground external use – Unplasticized poly vinyl chloride (PVC-U)
BS EN 1329 –Unplasticized poly vinyl chloride (PVC-U). Specifications for pipes, fittings and the system.
Kitemark: KM 563460
BS EN 1453 – Plastics piping systems with structured-wall pipes for soil and waste discharge (low and high temperature) inside buildings. Unplasticized poly (vinyl chloride) (PVC-U). Specifications for pipes and the system
BS 4514 – Unplasticized PVC soil and ventilating pipes of 82.4 mm minimum mean outside diameter, and fittings and accessories of 82.4 mm and of other sizes.
BS EN 681 – Elastomeric seals. Material requirements for pipe joint seals used in water and drainage applications. Part 1 vulcanised rubber.
Roof Area
GUTTER FLOW CAPACITY
Gutter flow capacity is dependent upon system type, outlet position and whether gutter is laid level or to a specified fall. The table above gives the required information based upon a Rainfall intensity of 75mm per hour and recommendations from BS EN 12056-3:2000.
Single Roof.
Please enter details of the roof. All measurements should be in metres.
Double Valley
Valley Roof
The four most common roof areas catered for are 'Single', ' Hipped', 'Valley' and 'Double Valley' as illustrated below.
The grey area denotes the area of roof that is calculated. For a standard semi or detached house, with a 'Single' roof design, two calculations, one for each side, are required. Other roof areas can be accommodated, by using a combination of these four modules.
Click on the link to the desired roof style, a calculator will appear on your screen, enter the dimensions, and the number of downpipe outlets as required. Once this has been completed click the calculate button. The dimensions or number of outlets can be altered by clicking back into the calculator boxes. For a new calculation or to clear the information already entered click the reset button.
The results appear, which give three scenarios, 'Outlet with no angles', 'Angle further than two metres from outlet' and 'Angle nearer that two metres from outlet'. In each case the result will also give you the gutter suitable to each scenario if the outlet(s) are placed at the end or the centre of each gutter run. The results page is printable by clicking on the 'Print' button on the calculator.
N.B. This has been calculated using the maximum achievable flow rates for each system. If however the flow rate in litres per second comes near to the maximum for the suggested system, as in the table on the flow rate main page, then FloPlast advise that the next largest system is used, or an additional downpipe is added to the system.
For further assistance in sizing roof areas and gutter flow rates please contact FloPlast Technical Advisory Service on (01795) 431731.
