6
6
BUILDING A CONCRETE SLAB FLOOR
• Prior to setting up the boxing for your concrete fl oor you will need to mark out the area
to 300mm bigger than the size of the shed. Remove any soft soil or dirt, fi ll with sand or
crusher dust and compact fi rmly to about 40-50mm below ground level.
• The concrete base should be 100mm thick around the outside, 80mm in the middle and the
top of the slab should be at least 50mm above the ground line to avoid water running into
your shed.
• Set up timber boxing to 4.980mm x 1980mm (inside measurement of the boxing)
This is
20mm smaller than the external measurement of the shed frame
which allows a 10mm
gap between the overhanging cladding and the concrete slab on all four sides of the shed.
• If you wish, place some plastic sheeting underneath the
concrete to stop moisture coming through the fl oor.
• Now is the time to place any steel reinforcing or mesh.
IMPORTANT - SHAPING THE FLOOR AT THE DOORWAY
To allow the water to run away from the roller door seal at the front of the shed, fi nd the centre
of the front and measure 1200mm each way. This is the position of the 2400mm door and
where you will slope the concrete for water runoff .
When you have poured your concrete, starting from 100mm back from the front, shape the
concrete so that it slopes down 20mm below the boxing at the front.
6
FOUNDATIONS
• No doubt by now you will have decided what sort of fl ooring base you are going to use.
• If you choose to pour a concrete fl oor, this is the best option as the cladding overlaps with the fl oor preventing the water from fl owing inside the shed.
Please see the details below for pouring your concrete fl oor.
• The second option is to install your shed on a Duratuf Timber Floor Kit. If you have one of these fl oor kits, please make sure that you read through the
instructions fully fi rst and proceed to build this fl oor prior to starting your shed. You will need to ensure that the ground is fi rm and fl at and the the fl oor is
anchored down securely
CONCRETE BASE
10mm
100mm
80mm
