Project description
We are finishing a two-storey private house and need a crew to install a hinged ventilated facade on all four elevations. The net area after deducting window and door openings is about 310 square metres, plus two gable ends of roughly 40, so call it 350 in the estimate. The walls are aerated concrete blocks of 375 mm with a reinforced concrete belt at floor slab level. Bracket anchoring has to respect that: chemical anchors or certified fasteners for cellular concrete in the field, steel anchors into the belt where the grid falls on it. Before the whole subsystem is ordered I want a pull-out test on site, at least five points, with a short written report.
The build-up we have in mind is a bracket with a thermal break pad, then 100 mm of mineral wool slabs in two staggered layers held by dish dowels, a vapour-permeable windproof membrane over the insulation, and a clear cavity of 40 mm to the cladding plane. The cladding is porcelain stoneware, 600 by 600 mm, matt, light warm grey with a fine structure, laid with open joints of 8 mm. Fixing should be concealed, either undercut anchors or clamps painted to the plate colour; tell us which you prefer and why. The cavity needs a perforated starter profile at the plinth and a vented closure under the eaves, otherwise the air will not move at all.
The scope also covers window and door reveals, sills and drips, external and internal corners, parapet caps, scaffolding rental and the removal of packaging and offcuts. Please quote labour separately from materials and say what timing you can honestly hold to; we would like the house closed in before the autumn rains.
— levelling survey of the walls and a bracket layout drawing before purchase;
— pull-out test with the fastener choice confirmed in writing;
— insulation, membrane and cavity executed strictly to the stated thickness;
— reveals, drips and corners in the same colour family as the plates;
— site left clean, waste taken away, scaffolding struck within three days of handover.
The build-up we have in mind is a bracket with a thermal break pad, then 100 mm of mineral wool slabs in two staggered layers held by dish dowels, a vapour-permeable windproof membrane over the insulation, and a clear cavity of 40 mm to the cladding plane. The cladding is porcelain stoneware, 600 by 600 mm, matt, light warm grey with a fine structure, laid with open joints of 8 mm. Fixing should be concealed, either undercut anchors or clamps painted to the plate colour; tell us which you prefer and why. The cavity needs a perforated starter profile at the plinth and a vented closure under the eaves, otherwise the air will not move at all.
The scope also covers window and door reveals, sills and drips, external and internal corners, parapet caps, scaffolding rental and the removal of packaging and offcuts. Please quote labour separately from materials and say what timing you can honestly hold to; we would like the house closed in before the autumn rains.
— levelling survey of the walls and a bracket layout drawing before purchase;
— pull-out test with the fastener choice confirmed in writing;
— insulation, membrane and cavity executed strictly to the stated thickness;
— reveals, drips and corners in the same colour family as the plates;
— site left clean, waste taken away, scaffolding struck within three days of handover.
Design and multimedia Cash, Bank transfer
