These Loft Stilts allow loft boards to be raised ensuring loft insulation is not compressed, which will in turn ensure maximum thermal performance. They will raise loft boards up to 235mm and the tubes can easily be cut down if shorter stilts are required. Available in 2 different sizes to accommodate different joist widths, these UK-Made loft board stilts are a ready-to-use kit which feature pre-drilled holes and even includes screws.