52
external envelope
through to the surface of the masonry. On a good masonry substrate, it then has a further 100mm to penetrate before even reaching the cavity or on a solid wall the masonry substrate is generally a minimum of 250mm thick, which provides even higher resistance to penetration. However the weak point will generally be the detailing
around openings or poor workmanship. Good detailing and site monitoring will ensure a good application is achieved and these can be achieved with the architect working in conjunction with the window company and render system manufacturer to ensure the detailing achieves the desired remit. Of course, the old adage about beauty being only skin deep
is never truer than in render choice. The render also needs to perform. It’s amazing that we still see applicators applying basic sand/cement mixes and applying several layers before finishing with a bagged product. This entails thicknesses of 20-25 mm deep and actually results, if you are lucky, in physical “water- proofing” rather than “weatherproofing” which may keep water out of the fabric for some time, but will also trap it within the structure resulting in longer term in dampness and failure. What’s needed is a render “system” which takes into account
of the substrate, be it masonry, timber or render board. The system will often include a primer to ensure correct adhesion of the basecoat which must be matched to the substrate as different substrates – for instance dense concrete masonry,
compared to lightweight block -- have different levels of suction. A “suitable” system for each application can be obtained in
consultation with the render manufacturer who should provide a specification which will take account of all factors, such as location, substrate, prevailing weather and many other factors to develop the best solution incorporating all the elements needed from primers and base coats to reinforcement for vulnerable areas such as openings - something often overlooked –to the thickness of the final finishing render which provides both the correct “look” and forms the first line of defence against the weather.
enq.173
Scotscape Living Wall systems with ‘integrated insulation’ available exclusively from Scotscape
The ScotscapeLiving Wall system is manufactured from a patented water-retaining fabric with integrated waterproofing and is supplied with a full 10 year warranty. Installed in one metre sections, the fabric living wall can be applied to projects of any scale and shape. The smart design of the system enables installation to be fast and straightforward and allows easy application to curved walls, gates and irregular shapes. Suitable for both interior and exterior use, the fabric is planted in situ, allowing the client to observe the on-going growth and development of plants until the entire fabric is covered in dense foliage. Costs are competitive enabling living walls to be accessible to more customers. Following the completion of an 18 month study into the thermal benefits of living walls, Scotscape has value-engineered our Fabric Living Wall system to enable the easy attachment of a variety of insulation materials to allow designers and architects to quantify the thermal benefits of living wall systems. Managing Director Angus Cunningham said: ‘it is crucial for the design community to be able to calculate the thermal benefits of living walls, the continuing development of our fabric system to meet this demand will enable genuine traceable thermal benefits of living walls to be applied to the retrofitting of existing property assets to become more efficient and sustainable’.
0208 254 5000
www.scotscapelivingwalls.net
New unitised curtain walling launched
building team a unique set of benefits including factory fabrication to ensure additional quality control and rapid on-site installation, with a team of five capable of installing up to 250m2
if access during installation is limited, the AA®265 system can be installed under restrictive working conditions, with the building remaining occupied.
01928 502500
www.kawneer.co.uk www.architectsdatafile.co.uk enq.175
UK architectural aluminium systems supplier Kawneer has enhanced its curtain wall portfolio with the launch of a fast- track dry-glazed unitised system. An alternative to the AA®201 structurally-glazed modular system, the AA®265 incorporates a three-chamber system and overlapping gasket design for optimum weather tightness. Its dry-glazed assembly gives the
of the AA®265 system in a single day. In addition,
enq.174 Warmcore video shows just how to do it!
A WarmCore installation video is now available on YouTube, which details exactly how to fit a new “warm alu- minium” folding sliding door. Featuring two experienced engineers from Synseal’s Technical Services team, this informative 8-minute video shows the removal of an old
in-line sliding patio door and its replacement with a brand new 3-2-1 bi-fold door in popular RAL 7016 Grey finish. The production follows a step-by-step approach and captions are used to support the voice-over commentary and emphasize key details, such as recommended outer frame fixing points. There is also an alternative “stop-motion” version of the video which presents the whole bi-door replacement process in less than 40 seconds to an up-tempo soundtrack.
01623 443200
www.synseal.com enq.176
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