Suspended Timber Ground Floor Construction Building Regulations

There are three general types of ground floor construction available.

Suspended timber ground floor construction building regulations.

Suspended timber floor as a requirement of the building regulations the structure should be protected against the growth of weeds and other plant life. The ground should have a layer of concrete poured across and there should be a ventilated gap of at least 150mm between the underside of the timbers and the concrete to prevent moisture. This allows air flow and ventilation to prevent the mould and dry rot that would otherwise occur over damp ground. Suspended timber floor how to build a floating or hollow timber floor.

For any other situation these tables may not be appropriate and you should refer to the. Supports underneath the floor are permanent and include sleeper walls or timber props placed at regular intervals. The standard form of construction became the timber floor structure positioned over compacted earth with an air space in between. Common timber sizes used in floor construction.

But some systems incorporate insulation within the floor itself such as tarmac s heatsave plus. These are solid floor construction suspended concrete floor construction and suspended timber floor construction. At the turn of the 18th century when construction techniques moved from boarded floors installed directly on the ground to suspended timber floors over a ventilated chamber the innovation solved a significant problem. All the figures are based on normal domestic floor loadings where the floor construction is typically 18 25mm floor boards sheets with up to 12 5mm thick plasterboard and skim underneath.

The ground should have a layer of concrete poured across and there should be a ventilated gap of at least 150mm between the underside of the timbers and the concrete to prevent moisture. Building and understanding a suspended or hollow timber floor. It is now a requirement of the building regulations to insulate ground floors. Previously floor timbers had been prone to damp and rot thanks to their direct contact with the moist ground.

Timber suspended floor ground preparation remove top soil and vegetation apply total weed killer and 150mm min thick sand blinded hardcore then either i provide concrete ground cover of at least 100mm thick or ii prepare the ground to an even surface and lay a ground cover of concrete at least 50mm thick on. Whether building a ground floor suspended timber floor or a first floor hollow floor we explain. Unlike standard ground floor construction suspended floors are not sitting directly on the ground. The standard method is to lay sheets of polystyrene or similar above the ground floor and then lay a screed or a timber floor over.

We explain how hollow or suspended floors are made and what the key building regulations that affect them are. This void underneath the suspended floor was ventilated via airbricks or other types of vent in the external walls to ensure a very effective air flow through the under floor area.