The Dam Buster Rainhead

This amazing Australian designed and made rain head, is quite simply the best rain head available anywhere in the world today.  Period. 

Providing effortless performance guaranteed to meet at least a 1:100 year storm event, the Dam Buster rain head is an incredibly easy to install,  great looking, top quality product that actually works straight out of the box.  It can be used with absolute confidence anywhere from tropical areas to deserts and everywhere in between. 

Simply determine the 1:100 year ARI (1% AEP) flow rate for the roof being serviced, then select the correctly sized rain head and downpipe combination from the Design Tables in the Installation Manual which you can find here at Technical Downloads.

Product dimensions can be found HERE.

Dam Buster products are certified to meet all Australian code requirements including AS3500.3, HB39 and the National Construction Code - in fact Dam Buster currently makes the ONLY range of roof drainage products like these which even carry that certification in the whole of Australia.  All of our certification critical information is easily downloadable from the Dam Buster website at Technical Downloads.

For Architects and Designers, Dam Buster rain heads will substantially minimise the visual impact of box gutters on the form of a building by making the rain head size as small as possible, while still ensuring 100% reliability when it matters and also providing an extremely good looking solution that will more than meet customer expectations.

The extremely high performance of all Dam Buster rain heads in the overflow condition provides enormous additional safety simply not offered by any other commercially available rain heads currently on the entire Australian market. 

If you'd like to find out more about our award winning rain heads, please read our Further Information page.

Now recognized across the country and protected by various Australian and International Patents, Dam Buster rain heads won a coveted Australian Good Design Award in 2018 and were also featured on Australia By Design Innovations Series 2, 10 Network Australia, 2018.  You can watch HERE.



Models are available to suit all box gutters from 200mm up to 600mm wide.  Adjustment to intermediate sizes is easy and can be done on site by the installing plumber - see Page 11 of our Installation Manual. 

Physical product dimensions can be found HERE.

A flat back panel model (available as an option) deletes the box gutter receiver and provides a "flat back" version (as the name suggests); this flat back design enables fitment to odd sized or shaped box gutters, and also to round PVC outlets. This flat back version can also be fitted to eaves gutter installations whereby the eaves gutter is cut in on the side. 

Every Dam Buster rain head, even our very smallest model, has an independently certified overflow capacity of at least 16 litres per second, which is the absolute limit of the current Australian Standard AS3500.3. 

Because each Dam Buster rain head is a piece of engineering excellence and carefully certified model by model, unfortunately we don't make random custom sizes, but if needed our engineers can potentially adjust some aspects of our design for customised purposes for architects or unique building designs without compromising the fundamental hydraulic operations and certification. 

Available variants include a range of R-300-XXX series rain heads which have been stretched horizontally (only) to cover a range of incoming box gutter widths between 300mm and 500mm; this allows lower profile, high capacity rain heads to be fitted on larger box gutters which otherwise could not be accommodated by the standard R-300 series rainheads which normally are limited to box gutters up to 300mm wide.  The dimensions for these stretched versions can be found HERE.


Standard Range:  Zincalume or Colorbond 0.55BMT is the standard material in all sizes and products plus all Dam Buster products can be easily powder coated if required (or painted by the purchaser) to almost any colour. Colorbond Matt is also available. 

Custom Order: Stainless steel 304, stainless steel 316 marine, Galvanized steel, Colorbond Ultra, Corten steel, copper etc.  Almost any flat metal can be used to suit your personal project requirements - simply ask an authorised licencee for a quote - they can be found HERE. 


Contemporary, Traditional or Round Fronted ("Ned Kelly" type) designs are available to suit your individual requirements; all have the same certification, size for size, for flow rates.  

The standard product is the contemporary design.  Our optional top trim piece provides a more traditional appearance and is simply fixed over the top of the contemporary rain head by the installing plumber or else can be factory fitted (NB this is not available for curved front models). 

For maximum flexibility, Dam Buster rain heads can also be ordered with flat back panels to suit odd sized box gutter installations, PVC pipe inflows and also eaves gutter installations.

Curved front option

Looks Fantastic

Curved front option - Looks Fantastic
Top view

With Decorative Trim Piece Fitted

Top view - With Decorative Trim Piece Fitted
Looks great installed
Looks great installed

Cheap Rainheads = Disaster - Don't end up like this home owner - a single non-conforming rainhead caused this massive mess.
Cheap Rainheads = Disaster

Don't end up like this home owner - a single non-conforming rainhead caused this massive mess.

Easy Compliance

DAM BUSTER rain heads meet or exceed the performance and overflow requirements of AS/NZS 3500.3, SA-HB39 and SA-HB114. They also fully meet all Conformance, Performance and Suitability requirements of the National Construction Code (NCC). 

Compliance is achieved either as Deemed to Satisfy by Expert Judgement (based on Dam Buster's extensive and freely downloadable technical information) or else by means of a Performance Solution which also utilizes Dam Buster's unique technical information. 

NOTE: Certification methods do vary according to the state or territory of installation, so all products should be installed by a licenced professional, always reflecting local regulator requirements. 

Dam Buster's uniquely designed rain head has been tested to absolute extremes.  It is a true world first piece of Australian innovation, which can also be installed very easily and with absolute confidence. 

Australian Good design winner 2018
Australian Good design winner 2018




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