Staple alumaflex to the whole of the roof and walls, tape the joints. Screw tile batten horizontally across the alumaflex fixed into the rafters. Put the tile batten at 400 centres. Plasterboard. Can't make any promises about condensation behind the alumaflex but if taped thoroughly it shouldn't happen.
Staple alumaflex to the whole of the roof and walls, tape the joints. Screw tile batten horizontally across the alumaflex fixed into the rafters. Put the tile batten at 400 centres. Plasterboard. Can't make any promises about condensation behind the alumaflex but if taped thoroughly it shouldn't happen.