• What is SPF

    What is SPF

    The product “RIGIFOAM Closed Cell Polyurethane Sprayfoam” which THERMAMASTA install,is a Closed-Cell, Rigid Polyurethane version of ‘SPF’, With superior Thermal Insulation performance, when compared to other ‘SPF’ formulations.

  • Building Professionals

    Building Professionals

    Closed-Cell SPF is especially suited to be applied externally, and due to its seamless nature, is unmatched for its ability to perform these duties. But even a roof insulated from underneath.

  • Building Managers and Owners

    Building Managers and Owners

    Closed-cell Spray Polyurethane Foam (SPF) systems deliver longer life expectancy and lower lifecycle costs over traditional systems, while affording superior protection to the building.

  • Before & After

    Before & After

    Photos of before & after the project started and finished.


Heatherwick Studio won a competition to design low-cost facilities for sixteen start-up arts enterprises for Aberystwyth Arts Centre, part of the University of Wales Aberystwyth.

Reluctant to dilute the wooded character of the site by superimposing a single campus-style block, the studio chose instead to set eight smaller buildings among the trees.
These consist of simple timber frame sheds, split down their centre and pulled apart to provide light and ventilation and a shared entrance area.
The studio developed a special cladding system for the buildings. As stainless steel is everlasting but expensive, the studio sourced steel the thickness of cooking foil. This makes it affordable, but it crinkles easily, providing neither structural rigidity nor insulation.

These problems are overcome by crinkling it in a controlled manner before spraying polyurethane insulation foam on the back of the crinkled surface.

The panelling is affordable, rigid and well insulated; it accommodates details like eaves and window sills and has a non- uniformity,
reflecting the forest’s leaves and pieces of sky in its facets.
The project was officially launched in May 2009 and all sixteen units are already occupied.

  • Client: Aberystwyth Arts Centre, University of Wales
  • Value: £1.1m
  • Date: 2008
  • Awards: The Civic Trust Awards (2010)