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EXTERNAL ENVELOPE
Mayplas adds new passive fi re, acoustic and thermal products to housebuilder range
M
ayplas, a specialist in passive fi re protection, acoustic and thermal insulation for the housebuilding
industry, has introduced three new products. The new Thermal Eaves Batt, Party Wall Head Cap System and Therma Soffi t add to Mayplas’ comprehensive portfolio of products for timber and masonry frame applications. The new Mayplas Thermal Eaves Batt provides a thermal barrier at the interface between the ceiling loft space and the external wall of new build homes. Comprising two main components, an eaves tray and a stone mineral wool insulation batt, the batt prevents cold spots and reduces heat loss while providing a clear air path between the roofi ng membrane and insulation to avoid condensation. The batt is suitable for roof pitches up to 45°. The new Party Wall Head System provides
fi re protection compartmentation at the party wall junction. Installed together as
continuity of fi re resistance between a compartment party wall and the underside of the roof covering, so preventing the spread of fi re and smoke.
per Mayplas’ Installation Guide, the two- component system - a party wall head cap and a tile batten barrier, achieves 60 minutes fi re integrity and insulation tested to the principles of EN 1363-1:2012 and EOTA TR31:2008 and independently assessed in accordance with BS 476-20:1987 and BS 476-22:1987. The system addresses Building Regulations requirements to maintain the
Mayplas’ third new product also works at the party wall junction. The Therma Soffi t provides thermal insulation within the soffi t. It is available in two thicknesses, 100 mm and 150 mm, facilitating required thermal resistance values (Approved Document L) and providing resistance to the passage of sound synonymous with stone mineral wool insulation (Approved Document E). These new products join Mayplas’ MP552 Cavity Stop Socks, MP556 Fire Stop Slab, MP551 Timber Frame Cavity Barriers and MP557 Acoustic Party Wall DPC cavity barrier, all recently tested to BS EN 1366-4:2021, to meet a wide range of housebuilders’ specialist insulation needs.
0161 447 8320
www.mayplas.co.uk/housebuilding-solutions
Siderise launches 2-hour rated version of its RH25 Rainscreen Horizontal Cavity Barrier
Siderise RH Rainscreen Horizontal Cavity Barriers are used to protect building facades around the world. To meet the growing industry demand for fi re resistance performance that goes beyond requirements, the passive fi re protection manufacturer has launched a new 2-hour rated version of the product, suitable for air gaps up to 25 mm. The RH Rainscreen Horizontal Cavity Barrier has been developed to meet the complex requirements of ventilated cladding systems. The Lamella stone wool barrier includes an integral strip of intumescent material along the leading edge which, when exposed to temperatures > 130°C, exfoliates to close the residual gap and prevent the spread of fi re within the time required by the relevant test standard and detailed in our certifi cation. This latest version of the product achieves 120 minutes Integrity (E) and Insulation (I) when tested to ASFP TGD19 (prEN1364-6) ‘Fire Resistance Test of Open State Cavity Barriers’ following the strict furnace controls set by BS EN 1363-1:2020. This performance has been independently assessed and is IFC Certifi ed (IFCC 1712).
01656 730833
www.siderise.com Proctor Air® brings benefi ts of modern technology to traditional Scottish roofs
An architect’s home near Dundee is seeing the benefi ts of its new roof underlay. Neil Simpson, a partner at Wellwood Leslie Architects, is fi tting the A. Proctor Group’s Proctor Air®
himself while renovating the roof
of his stone-walled property built in 1902. “Proctor Air has been excellent,” explained Neil. “It is relatively easy to install, and has protected us from the weather. The wind used to whistle through the roof before, but we’ve seen a difference straight away in reducing that infi ltration.” Situated in an exposed location overlooking the River Tay, the house is subject to the elements. As Neil has continued to live in the property during the work, the underlay had to be capable of protecting the property and its occupants. Proctor Air has a water resistance classifi cation of W1, and its BBA certifi cate states the hydrostatic head is greater than 1m. This water hold out performance means Proctor Air can be left exposed for up to three months. While the reroofi ng work has not experienced too much rain, there have been strong winds. Proctor Air can be used in wind zones 1-4 without additional measures such as taping joints or additional battens.
01250 872 261
www.proctorgroup.com/products/proctor-air
WWW.ARCHITECTSDATAFILE.CO.UK
ADF MARCH 2025
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