Ellie glues the foamglas into place to form the retaining wall's heel.

A floor slab that was cast last year.

The conduit holding the underground drainage is filled with gravel. Slates on top as they wont compress and the foamglas insulation can be laid on top.

Sand blinding; three layers of foamglas

Back of the vertical boards is packed with sand.

Foamglas in place and ready for the damp proof membrane.