KPVC Freeflow Diagram

A rainwater gutter is a narrow channel, or trough, forming the component of a roof system which collects and diverts rainwater away from the roof edge.

A rainwater downpipe or spout is a pipe for carrying rainwater from a rain gutter. Downpipes are usually vertical and usually extend down to ground level.

A hedgehog gutter brush keeps your gutters and drains clear of leaves, twigs, sticks, birds and other wind-blown debris.

KPVC uses the Freeflow® system which is is co-extruded to reduce main causes of leaks, uses compressible water tight seals and is film wrapped for protection from factory to fitting.

Benefits to your property

The main purpose of your rain gutter is to protect the building's foundation by channeling water away from its base. The gutter also helps to reduce erosion, prevents leaks in basements and crawlspaces, protects painted or stained surfaces by reducing exposure to water, and provides a means to collect rainwater for later use.

Water collected by a rain gutter is fed, via a downpipe, from the roof edge to the base of the building where it is either discharged or collected.  Water from rain gutters may be collected in a rain water butt. KPVC can install and retrofit these for you.

Gutters should be maintained, to remove leaves and other debris to keep them from clogging. Gutters that are filled with debris can overflow and soak the foundation, damage the roof structure, and exacerbate ice in cold weather.

The downpipe is used to direct water away from your building's foundation, to ensure your foundations are protected from water damage. The water can be piped to a drain or let into the ground or stored in a waterbutt. By recycling rainwater, this may reduce your household water charges.

Rainwater system styles

The rainwater systems we use come in a range of exterior colours but all have a white interior. This is to reduce problems associated with rapid heat absorption and expansion of gutters. The system is reliable, leak-free and can be quickly installed. They are also compatible with other rainwater systems using adaptors.

The styles available are as follows:

Ogee Gutter KPVC Ogee Gutter
Half Round Gutter KPVC Half Round Gutter
Deep Gutter KPVC Deep Gutter
Square Gutter KPVC Square Gutter
Cast Iron Effect Half Round Gutter KPVC Cast Gutter
Round Downpipe KPVC Round Downpipe
Square downpipe KPVC Square Downpipe


Our rainwater systems have a complete range of matching fittings to ensure a water-tight professional installation.
The following dimensions are available:

Ogee gutter     - 135mm wide, 77mm deep, 4m long (5.3 inch, 3 inch, 13.1 ft)
Half Round      - 112mm wide, 52mm deep, 4m long (4.4 inch, 2 inch, 13.1 ft)
Deep Gutter    - 116mm wide, 77mm deep, 4m long (4.5 inch, 3 inch, 13.1 ft)
Square Gutter - 114mm wide, 57mm deep, 4m and 5m long (4.4 inch, 2.2 inch, 13.1 ft and 16.4 ft)
Round pipe     - 68mm Diameter, lengths of 2.75m, 4m and 5.5m (2.6 inch, 9 ft, 13.1 ft, 18 ft)
Square Pipe    - 65mm x 65mm, lengths of 2.75m, 4m and 5.5m (2.5 x 2.5 inch, 9 ft, 13.1 ft, 18 ft)

Rainwater systems can come in White, Brown, Caramel and Black depending on style:

rainwater colours

KPVC freeflow

To view extra details of one of the rainwater systems, click here.


Cast Iron and Aluminium Rainwater Systems


Metal rainwater systems come with the following styles and options :

  • Guttering Styles (Various sizes available to meet flow requirements)
  • Victorian Ogee (Cast Aluminium & Cast Iron)
  • Half Round (Cast & Extruded Aluminium & Cast Iron)
  • Beaded Half Round (Cast & Extruded Aluminium & Cast Iron)
  • Molded - Ogee (Cast & Extruded Aluminium & Cast Iron)
  • Box Gutters, all sizes

Downpipes (Traditional, Contemporary & Anti-Vandal Profiles)

  • Square (Aluminium & Cast Iron)
  • Rectangular (Aluminium & Cast Iron)
  • Circular (Aluminium & Cast Iron)

Roofing Materials

  • Fascias & Soffits to complement Gutter & Downpipe Styling (Pressed Aluminium)
  • Wall Cappings (Pressed Aluminium)


  • Hopper Heads - Standard range or manufactured to clients requirements (Cast & Pressed Aluminium & Cast Iron)
  • Range of brackets & fittings e.g. Sterling lugs (Cast Aluminium & Cast Iron)


Hedgehog Gutter Brush

KPVC can also provide you with the award winning Hedgehog Gutter Brush which has been specifically designed to keep gutters and drains clear of leaves, twigs, sticks, birds and other wind-blown debris all year round. It is quick to fit and automatically adapts to the shape of any gutter. The Hedgehog comes in a 4 metre x 100mm (13.1 ft x 3.9 inch) brush and is suitable for 95% of domestic gutters.

KPVC Hedgehog Brush

KPVC Hedgehog Brico Award KPVC Hedgehog Showstoppers Award


Maintenance Service

KPVC recomends your rainwater systems to be cleaned using the ProWash Soft Wash method.

KPVC Prowash

KPVC Lead Free

KPVC use 100% lead-free products which reduce discolouration while the PVC-U coating is stabilised for superior weatherability and UV resistance offering longer lifetime than other products available.

We'd love to hear from you.

To find out how KPVC can assist with your project, call Keith on 087 959 5460 to discuss or


KPVC Covered by AXA Insurance KPVC Insured by Campion freefoaminstaller KPVC Safety Statement

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