Calcium sulphate screeds have become an increasingly common choice of subfloor to install in new builds, especially where underfloor heating is incorporated within the subfloor. This is because of the speed with which they can be applied over large areas and other advantages over concrete bases, including less shrinkage and fewer joints required within the subfloor. Neil Sanders, Technical Director at F. Ball and Co., gives his advice on achieving a long-lasting, professional flooring finish when working over this type of surface.

Failing to undertake proper subfloor preparation before the application of new floorcoverings can result in an unsightly finish or even complete floor failure, leading to costly remedial work. Fortunately, this can be avoided by adhering to just a few basic principles of subfloor preparation, including the need to guard against excess subfloor moisture – the leading cause of subfloor failure. Stephen Boulton, Technical Service Manager at leading manufacturer of subfloor preparation products, F. Ball and Co., goes through these processes.

Specialist Civil and Structural Repair company, Resitech Limited, were asked by Akelius Residential Limited to undertake a condition survey of the floor slabs at Leigh Court, Hammersmith, London. The floor slabs of the 5-storey building were constructed in a traditional 1890 – 1920 steel filler joist and a clinker concrete infill. The building was to be developed, refurbished and to undergo a change of use.

The process of heat welding for vinyl floorcoverings has been used for many years and is considered a crucial factor in the durability and longevity of the flooring surface.