Brett Martin Guttering

How often should rainwater downpipes be fixed to the structure?

Downpipes need to be secured at intervals of 2 meters or less.

Is it possible to install gutters level?

Yes, or at a gradient of 1:600.

Can I use various gutter angles?

Absolutely, angles can be customized. Please reach out to our technical department for assistance.

Can Brett Martin plastic rainwater systems be swapped with other brands?

Roundstyle Squarestyle Deepstyle Prostyle

112mm 114mm 115mm 106mm

Floplast Yes No No No

Hepworth Yes No No No

Hunter Yes Yes* No No

Marley Yes No Yes** No

Osma Yes No Yes No

Should I consider expansion and contraction when installing plastic gutters?

Yes, when each gutter length is positioned, ensure that neither end is pushed into the fitting past the ‘EXPANSION ALLOWANCE’ line. This will enable the gutter to adjust with temperature fluctuations without warping.

Is it necessary to install a gully at the bottom of a rainwater downpipe?

You have several choices: In residential settings where 68mm round and 65mm square downpipes are utilized, they typically discharge through a shoe into a gully's hopper. Alternatively, rainwater can flow into a back inlet gully via an adaptor and bend. Yes, you can connect a 110mm downpipe directly to a PVC underground drainage system; if the diameter is larger, an adaptor can be employed. Adaptors are also available for linking rainwater downpipes to underground drainage systems made from different materials.

What is the rainfall capacity of the Brett Martin Plastic Rainwater gutter systems?

106mm Prostyle gutter system 1:600 Fall Outlet @ Centre Outlet @ End Flow Capacity 5.1 l/sec 2.55 l/sec Max Roof Area 242m² 121m² 112mm

Roundstyle gutter system 1:600 Fall Outlet @ Centre Outlet @ End Flow Capacity 2.43 l/sec 1.31 l/sec Max Roof Area 116m² 62m²

114mm Squarestyle gutter system 1:600 Fall Outlet @ Centre Outlet @ End Flow Capacity 3.03 l/sec 1.52 l/sec Max Roof Area 144m² 72m²

115mm Deepstyle gutter system 1:600 Fall Outlet @ Centre Outlet @ End Flow Capacity 4.58 l/sec 2.31 l/sec Max Roof Area 220m² 110m²

170mm Deepstyle gutter system 1:600 Fall Outlet @ Centre Outlet @ End Flow Capacity 10.24 l/sec 5.12 l/sec Max Roof Area 488m² 244m²

How can I prevent leaves and debris from blocking my gutters?

Brett Martin provides two types of gutter protection systems. The first option is the Gutter Protection System (GPS1), which fits at the top of the gutter beneath the bracket and union clips. This system is not compatible with the 106mm Prostyle and 170mm Deepstyle gutter systems. The second choice is the Porcupipe Bristle Gutter Protector (BRP16CI), available in 2m lengths, which is placed between the gutter and the roof tiles.

What guarantee is available with Brett Martin Plastic Rainwater Systems?

All products are produced in accordance with current British and/or European standards. Brett Martin’s Rainwater systems come with our Guarantee.

What size of plastic downpipes are available?

Downpipes can be found in: 65mm Square for 106mm Prostyle & 114mm Squarestyle Gutter System 68mm Round for 106mm Prostyle, 112mm Roundstyle, and 115mm Deepstyle Gutter Systems 100mm x 75mm Rectangular (cast iron style only) 105mm Round (cast iron style only) for Cascade High Capacity Gutter System 110mm Round for Deepstyle 170mm Gutter System 160mm Round 200mm Round

What kind of fixings should I use if I have no fascia board?

In cases where there is no fascia or the building design prevents the use of standard support fittings, the rafter top bracket and side bracket offer alternatives. Rise and fall brackets anchored into the wall can support the gutter system when there is no fascia and rafter brackets are not feasible.

Do Brett Martin Plastic Rainwater Systems have good fire performance?

Brett Martin Rainwater Systems can be utilized in a diverse range of applications; however, they are not currently officially fire tested or certified. This indicates that there are certain scenarios where they may not be appropriate, such as in buildings exceeding 18m in height. Those who choose, specify, or install these products should always be mindful of the applicable building regulations to ensure that the products are used in the right contexts.

What maintenance is suggested for Plastic Rainwater System?

The security of gutter and downpipe brackets should be routinely checked as part of the overall building maintenance program. Ensure that no components have become loose or dislodged, and that the gutter extrusions have not shifted beyond the thermal expansion allowance marks in the fittings. Rainwater gutter systems should be cleaned regularly, at least once a year, or more often in areas with significant wind-borne debris, such as sandy regions or near deciduous trees. The high gloss surface finish collects minimal dirt; however, if necessary, a mild detergent solution works well. Brett Martin Rainwater systems are self-colored, so painting is typically not needed for several years post-installation. If painting becomes necessary, here are some guidelines for painting the gloss finish rainwater systems, excluding the Cascade cast iron style range: All component surfaces should be lightly sanded and cleaned; do not apply an undercoat. An oil-based gloss paint is the best choice.

Do I need to account for expansion on plastic RW offsets?

No, expansion should only occur at the downpipe connections.

What is the required spacing for my plastic fascia brackets?

Fascia brackets should be installed at centers no greater than 900mm apart. For roofs with a pitch greater than 35° and/or those that experience heavy snow loads, support spacing should not exceed 600mm. If an angle is attached to the fascia board, a bracket should be placed no more than 150mm away.

Is it possible to connect the 110mm plastic downpipe system to a metal gutter?

Yes, you can do this by utilizing the Flat Gutter Outlet (BR499). This part is specifically made to fit inside an industrial metal gutter. After it's placed inside, you can attach the 110mm downpipe to it.