A guide to Beam and Block Flooring

Longley Concrete is a leading supplier of Beam and Block Flooring. Our systems comprise of 175mm deep, prestressed concrete beams which are fitted with 100mm deep building blocks placed in between. Beam and Block Flooring has many advantages including the fact that it is easy to handle, quick to install and provides an immediate working platform for other tradespeople. It is also rot proof, draught proof and fire resistant is an all-weather form of construction and provides buildings with good thermal insulation.


Longley beams are made with C60 (60N/mm2 at 28 days) concrete. It is prestressed with 5mm indented steel wire. All of our beams are manufactured in an enclosed factory environment using fixed moulds. This means they have an enhanced finish as well as a superior dimensional tolerance.

Floor Blocks

All infill blocks should have a compressive strength of 3.5N/mm2 or 7.0N/mm2 and be able to support a minimum transverse load of 3.5kN on a 420mm span. The exact compressive strength needed in floor blocks differs depending on their application. For example for garage floors, blocks with 7.0N/mm2 are required, whereas the compressive strength of blocks built into loadbearing walls should not less than that of the blocks used in the wall construction. If you are unsure about compressive strengths one of our expert engineers will be able to advise you on these to ensure the correct blocks are used.

As well as Beam and Bock Flooring Longley Concrete also provide Hollowcore floors and Insulating flooring and produce precast lift shafts, landings, staircases, and stadia. Longley Concrete have manufacturing plants in London, Dewsbury and Northern Ireland and are able to distribute their precast products all over the UK. For more information about our services please get in touch today by calling 01924 464 283.