Stairs – Special
Communal StaircasesThe increased use of timber frame construction in flats and apartments has generated considerable interest in communal timber staircases.
Communal staircases tend to be simple in configuration but require heavier sectioning to take increased wear and tear.
The minimum specification for a flight would have finished sections of 32mm strings, 27mm treads and 18mm Plywood risers. All flights are fitted with bracing brackets to the underside of each tread and riser, at the centre of each flight. Where long straight flights are required, the outer strings are increased in depth and fitted with a carriage piece hidden within the enlarged soffit depth of the flight.
Flight and landing handrails are again heavy sections finishing 80mm width rather than the standard 65mm. Balusters would normally be square or stop chamfered in heavier 41mm section. In certain applications, fire retardant treatment maybe required which can be offered as an optional extra .
Cut String StaircasesWhereas a closed string construction staircase would have treads and risers housed into strings on both sides of the flight, the open sides of a cut string staircase have strings that follow the profile of the treads and riser.
The ends of the risers are returned with mitres into the string or a decorative bracket fixed to the string. The treads extend beyond the string face and are profiled to match the nosing detail. An optional scotia mould can be fitted to the underside of the nosing, returning with a mitre onto the string or bracket face .