I've recently built a new workshop in the garden, 5m square. It has a concrete floor that sits on plastic sheet to stop the damp rising. The walls are timber framed and clad with shiplap that has been treated externally. There is a double glazed french window and a double glazed single door. The roof is canted with an eight inch drop front to back. The whole structure is silicone sealed and weatherproofed. The roof itself is of corrugated Coroline sheet with a centre section that is semi opaque plastic sheet. Good enough to let light in but not completely clear. Condensation is building up badly on the plastic panels with a small amount on the Coroline. As yet the walls are not insulated or lined and the floor not yet fitted. The walls are to be clad with 150mm rockwool and the floor with Kingspan blocks with 9mm Sterling board wall panelling and 13mm T & G chipboard. The concrete was poured the second week in January so has been down about seven weeks. I intend to insulate and board the ceiling sections that are of Coroline with a centre section of clear 6mm sandwich type of plastic panel. Problem is the condensation. Is there a likely cure or will things improve when the walls and non-centre parts of the ceiling are insulated. I don't want to do the ceiling insulation if the condensation is to persist. Does anyone have an answer? Is the concrete cured? How long does that take? Will the floor benefit from painting before I fit the bearers and insulation?
- posted
7 years ago