RAINWATER MANAGEMENT
or projects in conservation areas. It comes in 19 standard colours, including Heritage Black, which emulates the traditional cast iron appearance. “Whilst visually identical, the Traditional range has a number of benefits over cast iron systems,” Glover says. “For one, the range is 65% lighter than cast iron equivalents making it far easier for tradespeople to handle and install. What’s more, it’s highly resistant to corrosion, meaning it won’t require the same levels of maintenance.”
Complementing the recent trend for new build and refurbished buildings to feature grey windows, doors and roofline installations, Kayflow has launched its latest square gutter system in anthracite grey.
Offering a modern finish, together with the benefit of a higher flow rate than standard half round systems, Kayflow’s contemporary guttering solutions are manufactured using up to 84 percent of post-consumer, recycled PVC. After adding the trending grey shade to the existing colour swatch of white, black, brown and caramel in its square gutter system, Kayflow now offers this full colour range for its square, half round, Ogee and Deepflow guttering profiles. Andy Swain, the company’s national business development manager – drainage, says: “Increasingly, we’re seeing innovative building plans specified by architects that feature grey windows and doors. The design style originated in urban areas and within town house projects, however its appeal has increased significantly, and the window shade now frequently features within suburban and rural homes. “At Kayflow we choose to create and offer products that meet the design requirements for contemporary and classic architecture alike, with guttering systems that don’t just deliver a visual impact but offer environmental credentials that make sense and demonstrate our responsible approach to manufacturing. “Not only do our guttering systems use
recycled materials in their production – creating significantly less CO² - but they’re manufactured using a dual extrusion process; which enables the outer layer of the gutter to be made with a higher quality grade of PVC, helping to retain the profile’s gloss and colour. The systems are purpose-made to keep the gutters vibrant for longer when compared to alternative products that haven’t been manufactured using similar methods.” Swain says that, easy to fit, the guttering can work alongside both round or square downpipe systems, offering an attractive aesthetic for modern homes, older houses, and conservatories. “To further support the guttering’s overall appearance, it can be supplied with a range of additional products; such as metal rise and fall brackets, side or top hung rafter brackets, and rainwater diverters and hoppers - as well as a full range of complementary high-quality fascia, soffit and dry verge fittings,” he says.
Rainwater management isn’t just a case of getting rid of the rain from the house via the guttering. Sending too much if the wet stuff down to the drains too quickly can overwhelm them, which is where systems like Brett Martin’s StormCrate55, an underground modular geocellular unit which is a cost- effective solution to surface water run-off in a wide range of below ground applications. “Faced with rising costs and stricter deadlines, modularisation is growing in popularity as contractors look to find the next generation of efficient and economical products and systems,” says Paul Grills, technical manager. “Due to the numerous benefits both on and off site, underground modular geocellular units such as the new StormCrate55 from Brett Martin Plumbing and Drainage will become an increasingly popular choice for merchants and their customers.” Weighing in at only 15.5kg per module and measuring 1200mm x 600mm x 347mm, the StormCrate55 modular units can be easily lifted by hand and then laid or stacked in rows. StormCrate55 has a high void ratio of 95% which means that the units are highly efficient at storing up to 237.5 litres of water in the event of heavy rains. The units are suitable for installation in landscaped areas, pedestrianised spaces, playgrounds, parking areas, driveways and access zones.
StormCrate55 can be wrapped in a geotextile which allows stored water to slowly seep into the surrounding ground and back into the water table. Another common practice is to surround StormCrate55 with an impermeable geomembrane to create a sealed underground tank. The outlet from this tank is then controlled to facilitate a slow release of the stored water back into the drainage system over a longer period.
Grill says that, with the UK experiencing some of the worst floods on record in previous years, water management systems such as this can provide effective flood protection for both the short and long term. BMJ
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www.buildersmerchantsjournal.net March 2020
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