Sealey GSS1508 - Manual (Page 2)

Concrete slab: Please ensure that your site is level. It is recommended that your slab is 100mm
thick and you use builders plastic and F52 reinforcing mesh. We recommend that you make your
slab 100mm bigger than the base dimensions of your shed. This will allow for a 50mm edge
around your shed. We recommend that you slope the 50mm edges downward by 10 mm so that
rain water can be drained away from your shed.