Rainwater Systems

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.

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.

Roof Area


Design and installation



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.

Hipped Roof

Double Valley

Roof 1
Roof 2
Roof 3


Valley Roof

Roof 1
Roof 2