Both the slab and ground floor walls use GGBS to reduce the cement content of the concrete and lower the carbon footprint. The ground floor concrete walls are also waterproof to limit damage if flooding should ever occur. The heavy weight of the concrete will also offset any buoyancy should the site ever be flooded to a significant depth.
The Peri shuttering has been struck exposing the timber formwork creating the window opening to the spa.
Holes for the the ventilation (MVHR) ductwork have been pre-formed in the walls.
One section of Peri shuttering remains to be struck.
