Electrical conduits shoud be placed on top of the Topfloor slab and finished with a 40mm river sand and cement leveling screed.

The underside or soffit of the slab is smooth and does not require plastering.

To finish, rake the underside of the joint clean soon after grouting.

Trowel a small quantity of Rhinolite or similar into the underside of the joints.

Finish to a smooth rounded shape by running a piece of plastic conduit along the joint.

N.B. It is not recommended that the joints are plastered closed. (Should you wish to do so, ask Topfloor for a recommended specification).

Apply a bonding liquid to the soffit before applying a textured paint.   

 "V" joints on the soffit are a feature of Topfloor Hollow-Core slabs and should not be plastered closed.

Mesh required in screed of all tiled areas.

 
 Plumbing and electrical conduits placed prior to screeding.
Conduits should be run over the top of the Topfloor slab.