If you are building, selling or letting a non-domestic building, before practical completion can be granted the new occupier or owner must be supplied with an Energy Performance Certificate (EPC) which grades the building's energy efficiency. In this programme we visit the new flagship John Lewis Store in Stratford, to see how a non-domestic EPC survey is undertaken and what factors are key in influencing the final EPC grade.

The Royal College of Music in London is located in the cultural quarter of South Kensington, an area crowded with museums, concert halls and academic institutions.

Developed by a wide range of industry representatives over a ten-year period, its assessments are becoming an essential benchmark for many civil engineering projects large or small and this programme looks at some of the main components of the scheme.

With rising damp almost eliminated in English housing, condensation is now the major source of unwanted dampness in homes. It can lead to mould growth, health issues for occupants and additional maintenance costs. This programme looks at the conditions that give rise to condensation, its impact upon dwellings, and what can be done to rectify its negative effects. It also addresses different forms of condensation, discussing surface and interstitial condensation.

This programme explores the reality behind the hype, explaining how LEDs work, outlining their history and providing a detailed discussion of the qualities of LEDs within six key categories.

Dr John Williams, Senior Technical Consultant, TRADA Technology explains some of the options for non-destructive assessment of timber strength and condition in historic building.

TRADA Technology's Dr John Williams looks at historic timbers and the methods used to inspect them. There are, he argues, a number of good reasons to recycle and re-use our heritage buildings.

An extract from TRADA Technology's new best practice guide, Low energy timber frame buildings: designing for high performance.

Building occupiers can't be certain how long components and systems will really last. Peter Tse of BSRIA gives an insight.

The introduction of BS EN 15288 has made a significant difference to pool surround drainage. Internationally-respected Aquatic Consultant Tom Devin of Devin Consulting discusses the implications.

There is some confusion amongst specifiers concerning the properties of "exterior grade" plywood. Dr Vic Kearley of TRADA seeks to clarify the situation and outline improvement actions that are underway.

We look at fixtures and fittings, the distinction between the two, and considerations when specifying.