The Self Build Self Help Site Block and Beam Floors

Concrete between Beams

Where a beam is situated next to an external wall, which can be the case depending on the house dimensions, and where 2 or 3 beams are adjacent to provide strength where needed, such as underneath stairs or to get the spacing right, the gap must be filled with concrete. The photos below shows 3 and 2 beams together and a beam adjacent to a wall.

Photo of block and beam

Photo of block and beam

Grouting between Blocks

Click on all photos for a larger view

Photo of block and beam in preparation


Yet another irritant is to grout all the voids between beams and blocks with a 3:1 sand:cement mix.

Provide for Underfloor Ventilation


Every 1.8 metres a telescopic vent is cemented in instead of a slip block. Here the vents are seen cemented into the inner leaf. The top end of the vent has to be incorporated into the outer leaf.

Photo of block and beam in preparation

Photo of block and beam in preparation


If building the outer leaf in block, another irritant is to work the blocks around the outer opening of the telescopic vent.

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