Cast Iron Niagara Gutter

rainwater Rainwater

FloPlast rainwater systems offer a wide choice of profile design, both traditional and modern, in a range of colours to suit all tastes and applications.

The FloPlast reputation for technical excellence, competitively priced and quality finished products have established the company as a leading supplier of PVC-U Plastic Building products.

Related documents System Features Specifications

FloPlast recommend the use of lubricant on all gutter seals for ease of fitting and improved performance.

● 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.

Please see related documents for installation guidelines.

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 607 – Eaves gutter fittings of PVC-U

BS EN 1462 – Brackets for eaves gutters

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 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. Specification

BS EN 1453 – Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure.
Kitemark: KM 572701-Structured Wall Pipe

BS EN 681 – Elastomeric seals. Material requirements for pipe joint seals used in water and drainage applications. Part 1 vulcanised rubber.

Standards/Quality Control

FloPlast operates quality and environment management systems which have been assessed by BSI and comply with the requirements of both BS EN ISO 9001:2015 Certificate No. FM 501414 and BS EN ISO 14001:2015 Certificate No. EMS 538445

All products are subject to continuous quality control procedures and products manufactured to British Standard Specifications are marked accordingly.

Downpipes

112mm Half Round

114mm Square Line

110mm Niagara Ogee

115mm Hi-Cap

76mm Miniflo

170mm Xtraflo

"Cast Iron" Style

EcoFlo

StormSaver Rainwater Harvesting

Ancillaries & Spares

View Frequently Asked Questions Request a brochure

Calculator

Design and installation

Roof Area

The effective roof area can be calculated by using the following formula:

Method of calculating effective roof area

Roof pitch 10° 12.5° 15° 17.5° 20° 22.5° 25° 27.5° 30° 32.5° 35° 37.5° 40° 42.5° 45° 47.5°
Factor 1.088 1.111 1.134 1.158 1.182 1.207 1.233 1.260 1.288 1.319 1.350 1.384 1.419 1.459 1.500 1.547

For roofs of 50° or more and walls, the factor of 1,600 should be used

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.

Please enter details of the Double Valley roof. All measurements should be in metres.

Please complete the fields that have gone red

Length of roof (L):

Please complete the following field

Width (Plan View):

Please complete the following field

Pitch of roof °:

Please complete the following field

Number of Outlets:

Please complete the following field

Flow Rate - Help

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.

Results

System with outlet and no angles:
System with outlets @ end :
System with outlets @ centre :
Roof Area = Square Metres : Flow Rate = Litres per second
System with angle further than 2 metres from outlet:
Angle > 2 metres from outlet (end):
Angle > 2 metres from outlet (centre):
Roof Area = Square Metres : Flow Rate = Litres per second
System with angle nearer than 2 metres from outlet:
Angle < 2 metres from outlet (end):
Angle < 2 metres from outlet (centre):
Roof Area = Square Metres : Flow Rate = Litres per second

Please enter details of the Double Valley roof. All measurements should be in metres.

Length of roof (L):

Please complete the following field

Width (Plan View):

Please complete the following field

Pitch of roof °:

Please complete the following field

Number of Outlets:

Please complete the following field

Flow Rate - Help

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.

Results

System with outlet and no angles:
System with outlets @ end :
System with outlets @ centre :
Roof Area = Square Metres : Flow Rate = Litres per second
System with angle further than 2 metres from outlet:
Angle > 2 metres from outlet (end):
Angle > 2 metres from outlet (centre):
Roof Area = Square Metres : Flow Rate = Litres per second
System with angle nearer than 2 metres from outlet:
Angle < 2 metres from outlet (end):
Angle < 2 metres from outlet (centre):
Roof Area = Square Metres : Flow Rate = Litres per second

Please enter details of the Double Valley roof. All measurements should be in metres.

Roof 1

Length of roof (L1):

Please complete the following field

Width (W1):

Please complete the following field

Pitch of roof (°1):

Please complete the following field

Roof 2

Length of roof (L2):

Please complete the following field

Width (W2):

Please complete the following field

Pitch of roof (°2):

Please complete the following field

Outlets

Number of Outlets:

Please complete the following field

Flow Rate - Help

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.

Results

System with outlet and no angles:
System with outlets @ end :
System with outlets @ centre :
Roof Area = Square Metres : Flow Rate = Litres per second
System with angle further than 2 metres from outlet:
Angle > 2 metres from outlet (end):
Angle > 2 metres from outlet (centre):
Roof Area = Square Metres : Flow Rate = Litres per second
System with angle nearer than 2 metres from outlet:
Angle < 2 metres from outlet (end):
Angle < 2 metres from outlet (centre):
Roof Area = Square Metres : Flow Rate = Litres per second

Please enter details of the Double Valley roof. All measurements should be in metres.

Roof 1

Length of roof (L1):

Please complete the following field

Width (W1):

Please complete the following field

Pitch of roof (°1):

Please complete the following field

Roof 2

Length of roof (L2):

Please complete the following field

Width (W2):

Please complete the following field

Pitch of roof (°2):

Please complete the following field

Roof 3

Length of roof (L3):

Please complete the following field

Width (W3):

Please complete the following field

Pitch of roof (°3):

Please complete the following field

Outlets

Number of Outlets:

Please complete the following field

Flow Rate - Help

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.

Results

System with outlet and no angles:
System with outlets @ end :
System with outlets @ centre :
Roof Area = Square Metres : Flow Rate = Litres per second
System with angle further than 2 metres from outlet:
Angle > 2 metres from outlet (end):
Angle > 2 metres from outlet (centre):
Roof Area = Square Metres : Flow Rate = Litres per second
System with angle nearer than 2 metres from outlet:
Angle < 2 metres from outlet (end):
Angle < 2 metres from outlet (centre):
Roof Area = Square Metres : Flow Rate = Litres per second

Product Drawings (BIM/CAD/PDF)

You can download accurate CAD drawings and BIM Models/Families of our products from our FloPlast CAD & BIM library.To access the library you must register using the form below. You will then be sent an email which contains your access link giving you full access to the Fastrack CAD & BIM Library.

Videos

Rainwater System Installation Video
View all videos

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