N.B. The Stability of the Floating timber staircase is based on a secure fixing of the newel posts to handrail , the wall stringer to wall and the top of staircase to edge of floor. It is also very important to allow for plenty of silicon to be applied between timber joins especially in grove between tread and stringer. This is primarily to allow for a little movement and prevent squeaking.
-Connect the stringer to top and bottom step and newel posts.
-Offer up to wall, check levels and drill through stringer into wall for fixings (within stringer tread grove will hide the fixings once treads are in place)
-If using a resin fixing, pull the stair away and prepare the hole in the wall
-Bolt the stringer into the wall
-Fix the upper apron plate and newel to the floor
-Fix the handrail to both the newel posts.
-Wind all the spindle into position into the handrail. These will be numbered and will be different lengths.
-Slot, centre and fix the treads into the wall stringer from the top down. These are screwed from under the tread. The top and second bottom tread will also fix to the newel post.
-Whilst fixing the treads connect 1 or 2 of the spindles to the outer part of the hanging treads using the bolts supplied. This is just temporary to take to load.
-Working with one at a time bolt the spindles to the treads.
-Use the smaller bolt to fix the middle tread spindles in place and the longer bolt to fit the spindles that span from one tread to the next.
-With a spirit level, check the level (both ways) of each tread and align the spindles and the adjustable foot.