Whether the ground floor of a house is suspended or filled, it will include either a solid slab or an oversite layer of concrete laid on compacted hardcore directly on the ground. Both hardcore and soil are potential sources of sulfates and other chemicals harmful to concrete. This programme investigates the hardcore components and soil conditions likely to contain sulfates, explains how concrete is affected by sulfate attack and looks at methods used to prevent such damage.
As a construction product, there’s much to be said for good, dependable, ‘old-fashioned’ timber.
Besides the continual drive to build new dwellings (to ever most stringent thermal performance requirements), there is also a need to improve the existing building stock. However, with schemes such as the Green Deal and the Energy Companies Obligation (ECO) in place, timber-framed houses are currently falling through something of a loophole. In this concluding part we focus on the insulation options in more detail with a focus on Building Regulations performance.