Thermally Efficient Building Design
Alpha Clad offer a large selection of high performance thermal and acoustic insulation,
ranging from glassfibre and rockfibre quilts to acoustic slabs and polyisocyanurate
boards.
All of our glass fibre and rock fibre type insulation quilts are classified non-combustible to BS476 Part 4, meet
Euroclass A1 to BS EN ISO 13501-1 and achieve very impressive thermal conductivity (lambda value) figures.
These quilts are odourless, rot proof, non-hygroscopic, do not sustain vermin and will not encourage fungi, mould or
bacterial growth.
However, it is important to stress that not all quilts supplied within the construction industry are the same! Products
used within the cladding construction industry should have lambda values of 0.040 or better. Therefore, you must
ensure that ‘U’ value performance quotes are for comparable products and the thermal conductivity value is
stipulated within the calculations. Typical loft type insulation, available from the major DIY suppliers tends to only
achieve a lambda value of 0.044. If this insulation is used, in the thicknesses we quote, it will not meet Building
Regulation requirements.
The way the insulation is placed during construction is also critical. Any compression reduces the product’s
performance. Therefore, spacer compression, indentations from lining panel ribs etc., must be taken into account –
a 200mm quilt compressed into a 160mm cavity will only theoretically perform as good as a 160mm quilt!
Attention to detail at junctions is also important. Building Regulations Approved Document L2a stipulates that the
building fabric should be constructed so that there are no significant thermal bridges or gaps in the insulation layer
within the various elements of the building fabric, particularly at joints between elements and at the edges of
elements, such as those around window and door openings.
For advice concerning correct product choice, ‘U’ value compliance, acoustic performance and junction detailing
good practice, combined with excellent rates and quick lead times please contact us.
Insulation
Profiled Metal Cladding and
Ancillary Supply Specialists
Registered in England No. 06416356
UK VAT No. 997 1144 85
Tel: +44 (0) 1452 504 676
Fax: +44 (0) 1452 504 676
Email: enquiries@alphaclad.co.uk
Unique to the majority of suppliers
we are also able to offer a
comprehensive technical service,
issued either as part of the supply
package or as an un-biased
independent consultation service
covering products not included
within our supply.
Design Service
For thermal design advice
PLEASE CONTACT US
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