Advice Centre

Cold and Chill Stores

Waitrose, Chorley. Chill store with air permeability rating of 0.99m3/hr/m2 @ 50 Pascals

Over recent years Cold Store and Chill Store specifications have been requested, with little understanding in terms of what CA Building Products roof and wall cladding systems can offer. The use of CA Building Products roof and wall cladding systems in standard format as well as the Twin-Therm® Quantum and Twin-Therm® Griffon curved roof options are technically designed to meet most internal controlled climatic / temperature variations, but not those condition for cold or chill stores.  However, Continue Reading »


SolarWall® Royal Mail Swan Valley

All CA Building Products roof and wall cladding systems can contribute towards the Mat 01 Life Cycle Impacts, Mat 03 Responsible Sourcing of Materials and Mat 04 Insulation sections within the materials category of the BRE Environmental Assessment Methodology (BREEAM). These contributions are detailed below; Mat 01 Life Cycle Impacts Depending upon the system of choice the Twin-Therm® and River-Therm® cladding systems fall into the following classifications defined in the BRE Green Guide to Specification; Twin-Therm® Roof Continue Reading »


Steelwork Arial

Most roofing and cladding contractors have encountered steelwork tolerance issues when installing both pitched and curved roofs. Care must be taken to minimise deflection, sag and twist on purlins and rails. In some instances, particularly with facetted rafters, purlin cleats can be as deep 500mm. Even a small misalignment can have a significant effect to the position of the top flange of the purlin where the roof cladding is fixed. To ensure this does not occur, the Continue Reading »


The controlled addition of natural light, either direct or diffuse, into a building will reduce the use of electric lighting and ultimately reduce the buildings running costs. The inclusion of natural daylighting also plays a significant role in compliance with Building Regulations ADL2, however in terms of meeting compliance it is not just the thermal performance of the rooflights that must be considered, further information in regards to rooflight area, light transmission and solar gain is required Continue Reading »

Health and Safety

Long River-Therm® sheet instaltion

Manual handling is a major risk associated with many roofing products and components which are in excess of 20kg/m². Under the CDM (Construction Design Management) regulations the architect and building owners have a responsibility in terms of managing these risks. CA Building Products roof and wall cladding systems are simple to install, with no heavy individual components, eliminating risks of manual handling, both on the ground and at height. One of the major issues associated with roof works Continue Reading »

Transport to Site

25,000m2 of Twin-Therm® Roof on 6 trailers

Over recent years CA Group has focused on CO2 emissions resulting from transport. With up to 35 vehicles delivering throughout the country per day our CO2 emissions were high as were our transport costs. A total review was undertaken with our customers and new procedures were implemented. On a typical 10,000m2 retail store we were shipping the complete order on up to 17 vehicles; today we have reduced that to 11, which is a 35% reduction in Continue Reading »


Badly Maintained Gutters

The summary of routine maintenance advice, within the inspection and maintenance requirements for all systems, makes no recommendations in respect of site safety requirements to access and traverse the roof safely during maintenance inspections and working procedures. Proper and adequate risk assessments and method statements should be prepared for each maintenance inspection and working procedure by competent persons / bodies undertaking such maintenance inspections and working procedures. We recommend all inspections and any work undertaken on buildings Continue Reading »

Thermal Performance

Twin-Therm® Roof Build up

Ask anybody what action should be taken to improve the thermal performance of a building and most will suggest adding more insulation. This response was common place until the 2002 Part L2A regulation change which required a 0.25W/m²K roof and 0.35W/m²K wall. At this point academia and industry agreed that we had reached the point of diminishing return. Yes, we could add more but its contribution in reducing CO2 emissions was minimal, in fact the reverse is Continue Reading »

Sequential Sheeting

Sequentially packed CA LT 17 1000

Accelerated programmes should be one of the key considerations for building designers, specifers, main contractors and cladding contractors. The ability to install a roof quicker and more importantly get off a projects critical path is a key feature of CA Building Products roof and wall cladding systems. The planned build time onsite is linked into the critical path of the project and any delays would not just affect the project completion but would more than likely be Continue Reading »


Fully walkable systems

A building at any stage of its life cycle will pose a number of risks, from the initial design and installation stages through to completion and then disposal of the building. Products and practices involved must be thoroughly assessed for any positional risks. The Health and Safety of every operative or visitor on a construction site is of paramount importance and with strict Health and Safety practices in place everyone involved in the contractual chain has a Continue Reading »


Thurrock distribution centre fire

External cladding that is tested by the Loss Prevention Certification Board (a subsidiary of BRE Global) to LPS1181 can be classed as non-combustible. However the Association of British Insurers (ABI) May 2003 make note that ‘this grading does not imply that the materials are non-combustible’. Most building owners or operators are unaware that the envelope that protects them from the weather is likely to be highly combustible. Even more so when the envelope, whether roof or wall, Continue Reading »


Building Demolition

The building design needs to consider a ‘cradle to cradle’ approach and disposability of the envelope cannot be ignored. Pension funds and building owners face huge disposal costs as a consequence of some insulation’s that have been used, which have been classed as hazardous and need to be disposed of in a safe and proper manner. Due to these disposability issues some manufacturers offer and discuss ‘cradle to installation’ to avoid the consequences of disposal and claim Continue Reading »

Air Permeability

Prologis / Bosch Siemens achieved and air permeability rating of 1.03m3/h/m2 @ 50 pascals

Air leakage has been widely identified as the primary source of heat loss from a building’s interior. Reducing air permeability is a major factor in demonstrating compliance with Building Regulations, and where heating is required can make the difference between a pass and fail. A good air permeability result will aid in delivering Energy Performance Certificate (EPC) ratings in Band A. With return on investment (ROI) and yields likely to be affected by the overall thermal performance Continue Reading »

Friday, July 27th, 2012