Summer House CalculatorInstant price within 60 secondsSummer House Calculator0% Complete1 of 9 Base requirements & guidance Acceptable Bases arrowup5 All summer houses must be installed on a solid level foundation for structural integrity. Unacceptable Bases arrowup5 The following floor type is not suitable, i.e directly on grass or uneven broken surfaces which have no structural integrity. Do you need a solid base / foundation? * Yes No UnsureTreated sleeper posts concreted in, with a treated 4×2 frame, damp proof membrane, 25mm insulation and 18mm ply board finish. If you are human, leave this field blank. Next
