To make insulating masonry walls as easy as possible, Knauf Insulation has launched the Crown® AcoustiTherm Independent Lining System. Designed to provide either thermal and / or acoustic insulation, the system features a layer of Crown® AcoustiTherm Wall Roll held within an easy-to-build metal frame ready to receive a plasterboard lining. Knauf Insulation’s high-performance glass mineral wool gives an outstanding level of acoustic and thermal insulation and is also non-combustible.
Using the Crown® AcoustiTherm Independent Lining System makes meeting that challenge easy! The framework has been specifically designed for the task and the insulation material used should allow the performance levels set by the Building Regulations to be comfortably met.
At the heart of the system is Crown® AcoustiTherm Wall Roll, a high density, semi-rigid glass mineral wool. The sound absorption characteristics of mineral wool make it ideal for acoustic insulation and it also offers an exceptional level of thermal insulation. In fact, with a thermal conductivity of only 0.032 W/mK, Crown® AcoustiTherm Wall Roll has the best thermal performance in the Crown® Thermal Insulation range. As a bonus, it’s also non-combustible having a Euroclass A1 fire classification – the highest rating possible. The roll has a kraft paper and polyethylene vapour control layer bonded to one side and this is printed to help installers measure and cut the roll quickly and accurately. Rolls are available in three thicknesses (75 mm, 85 mm and 100 mm) and are either 5.40 m (75 mm thick) or 2.70 m (85 mm and 100 mm thick) long by 1.20 m wide.
The framework for the Crown® AcoustiTherm Independent Lining System is convenient, easy to use and very quick to assemble (in fact, probably quicker to build than say!). Knauf AcoustiTherm Floor & Ceiling Channel is fixed to the floor and ceiling to locate the main uprights and Knauf AcoustiTherm Wall Channel fixed to the wall. Adjustable Knauf AcoustiTherm Wall Clips are then located in the wall channel, the insulation ‘impaled’ on the clips and the main uprights clipped in place. And that’s it – the lining system is finished and ready for drylining.
Two types of wall clip are available – Type-N for new-build walls and Type-R for refurbishment work – and both are adjustable to allow the face of the framework to be easily trued to vertical. The Type-R clip has a greater range of adjustment to overcome the structural irregularities often encountered in refurbishment projects and also has retaining discs to ensure the insulation material stays tight against the plasterboard. Both clips feature a unique nylon head to prevent thermal bridging.
“From the tests and trials we’ve carried out, we know the lining system is going to be popular,” said John Gaunt, Knauf Insulation’s Market Manager for Building and Construction. “The system offers a very convenient and easy-to-use method of solving a common problem. Using a high-performance mineral wool makes achieving the Building Regulation targets easy and the purpose built framework and no wet processes really do speed up installation.”
A number of Knauf Insulation brochures – The Crown® AcoustiTherm Independent Lining System, Residential External Walls and Residential Separating Walls – give a wealth of information about the system and its use and are available free on request. To receive a copy, or get information about this and other Knauf Insulation products, please visit www.knaufinsulation.co.uk or call 08700 668 660 quoting KR 207 04.
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