Our products are created with you in mind - loaded with cost-saving innovations in addition to a faster installation. Continue reading to discover more about how to install our staircases.
Site fixing of stairs should be in accordance with Building Regulations, NHBC Standards and any referenced documents with particular attention to the BWF Installation Guide and the following:
All wall strings are to be fixed through the pre-drilled holes using appropriate fixings. Wall strings may need to be cut at each end vertically, to suit skirting height and/or cut to not project into a passageway causing a trip hazard. Refer to the above-mentioned BWF Fixing Guide for guidance and the string fitting guidance in our resource centre.
Treads should be fixed by gluing with PVA and driving home-supplied wedges.
Risers are to be fixed by gluing with PVA and driving home-supplied wedges. The lower edge of risers should be glued and fixed to treads using an appropriate fixing at centres not exceeding 230mm. The fixing should penetrate each tread by at least 23mm or 1.5 times the thickness of the risers, whichever is greater.
Newel-posts are mortised to receive a string tenon and should be fixed using dowels and a suitable adhesive. Newel-posts must also be fixed square to the tread. DPC is to be fitted under newel-posts/stringer on the ground floor to avoid moisture intake.
Flight and Landing Nosings should be fixed to the wall string, newel-post and trimmer. Landing nosings should be fixed to the trimmer and not project more than 15mm from the finished face of the trimmer.
Corner Glue Blocks are to be glued every 150mm.
All winder staircases are supplied with a factory-prepared, under-stair, soffit detail which also allows for the suitable dry lining to be fixed to the angled glue blocks, creating a stepped soffit detail. String trenchings are ‘stopped’ to provide a neat finish and this solution increases available headroom. This system is optional and allows for staircases to be finished via traditional methods.
The decorated finish of the product may determine the type of adhesive to be used. With a painted finish, Polyvinyl Acetate (PVA) will be suitable for joints. However, with a clear finish it may be necessary to use an alternative such as Cascamite. In all cases the adhesive supplier should be consulted for recommendations.
The material, packing distances, wall and well opening construction and load-bearing requirements are to be considered when deciding on an appropriate fixing. In all cases the fixing supplier should be consulted for recommendations, considering the materials to be fixed.
Subsequent and final checks must conclude that:
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