Everything you need to know about the latest roofing kit, from harsh-weather protection to a pyramid over a swimming pool. Plus, the latest services and innovations from manufacturers
Pyramid roof light
A 7.5 × 7.5 m pyramid-shaped roof light has been installed at a swimming pool at Beverley Park Holiday Centre in Paignton, Devon. Made and installed by Brett Martin Daylight Systems, it replaced three sets of barrel-vaulted, plastic roof lights. It was specified to increase daylight levels and ventilation, and is controlled by automatic temperature and rain sensors that operate two powered, glazed vents. The roof lights have 25 mm thick translucent multi-wall polycarbonate said to give a U-value of 1.6 W/m2K.
Brett Martin Daylight Systems
Fire without smoke
Bilco has launched its REM Automatic Smoke Ventilator for venting smoke and noxious fumes from burning buildings. It is powered by a 24 V electric motor that can be operated by a switch, smoke detector or thermostat. It can also be opened manually. Intended to be fitted at the head of stairways, lift shafts and within industrial roofs, the company says it can also be used for easy access to the roof for maintenance. Three sizes are available as standard with special sizes on request.
Moss-free roofing system
A roofing system called Nu-Lok that replicates traditional slate has been introduced in the UK. It’s fixing system that is said to halve installation times and the non-porous ceramic slates are claimed to prevent moss or algae growth. The fixing system consists of galvanised metal battens instead of traditional timber battens. Attached to these battens is a special metal channel that uses metal clips to secure the slates. The channel is designed to direct water penetrating between slates down over the slate below, eliminating the need to double-lap the slates as you would with a traditional slate roof.
Fixings specialist ITW Construction Products has launched a nail suitable for fixing battens that complies with the new British Standard BS 5534, the code of practice for roof slating and tiling. The galvanized nail is 63 mm long and 3.1 mm in diameter, and is intended for use with the company’s Impulse cordless nailers.
ITW Construction Products
Breathable membrane underlay
TDP has added two breathable membranes to its roofing underlay range. The TDP Breather 120 and 155 are suitable for ventilated cold or warm pitched roofs. The company says the products prevent the ingress of wind-driven snow and rain, but allow water vapour to escape from inside the roof. The TDP 120 is a general-purpose membrane available in two roll sizes, 1 × 20 m and 1.5 × 30 m. TDP 155 is a heavy-duty membrane intended for use in harsh weather areas, and can be used with sarking boards. It is supplied in a 1.5 × 50 m roll.
Plastic building products specialist Freefoam has introduced two new woodgrain finishes into its Finial range of decorative boards for finishing pitched roofs at the gable end. The colours are light oak and traditional mahogany and join an existing range of ten colours.
Hunter Plastics is making its guttering available in 5 m lengths. The company claimed to be the first to do so, and is responding to the increasing use of 5 m long fascia boards. It said research showed that 41% of guttering replacements were carried out at the same time as fascia installation or replacement, and longer guttering lengths would make installation quicker, cheaper and neater. The inclusion of prelubricated seals is also intended to make the system easy to install.
Bristol restaurant’s curvy finish
A conical and waveform roof featuring FalZinc cladding has been used at the new Zero Degrees microbrewery and restaurant in Bristol. Falzinc, an aluminium sheet with a preweathered zinc coating, was specified as it helped blend the building into the surrounding conservation area. The 400-seat restaurant, designed by local architect Acanthus Ferguson Mann, re-uses stonework from the former Tram Sheds building that used to occupy the site. Falzinc-approved contractor Longworth Metal Roofing formed the tapered trays by hand to follow the curve.
Traditional tile for high-density housing
Lafarge Roofing has launched a large format roof tile intended to replicate traditional plain tiles. Called Redland DuoPlain, it is an interlocking tile featuring a mock bond line that replicates two traditionally sized 10½” by 6¼” tiles laid side by side. The company says the product had been developed in response to PPG3, as planners were paying closer attention to the appearance of roofs in higher-density housing schemes and placing a greater emphasis on traditional roofing materials. Lafarge says that the tile, made from concrete, could be laid quickly and suffered less breakage than traditional tiles. It is available in a choice of four colours with a selection of accessories and specially-shaped tiles including half tiles and verge tiles.
Movers and makers
After completion, it absorbs any unventilated moisture in the roofspace and releases it again when temperatures increase.