Suspended Floor Insulation Building Regulations

Since 1990 when a modern timber floor is constructed insulation is required by the building regulations.

Suspended floor insulation building regulations. Solid floor insulation over slab to meet min u value required of 0 22 w m k solid ground floor to consist of 150mm consolidated well rammed hardcore. February 17th 2020 building regulations for concrete floor construction. If the insulation is soft insulation it can be suspended on netting fixed between the joists whereas rigid insulation can be sat on battens nailed to the side of the joists. Suspended timber floor as a requirement of the building regulations the structure should be protected against the growth of weeds and other plant life.

However many of the more commonly used insulation materials available are not ideal for suspended floor improvements for various reasons. Heat rises as denser colder air falls and pushes the warmer air up and is more likely to escape through the roof. Our skills and knowledge base have developed as time has gone on meaning that we have always kept up to date with our equipment for carrying out installations and. For solid concrete floors make sure that if they need to be replaced your builder puts in insulation you have to insulate a floor when it is replaced in order to comply with building regulations.

The importance of insulating floors. Provide 100mm st2 or gen2 ground bearing slab concrete mix to conform to bs 8500 2 over a 1200mm gauge polythene dpm dpm to be lapped in with dpc in walls. Blinded with 50mm sand blinding. Solid floors are insulated using rigid insulation foam which can be fitted either above or below the concrete.

Renovation of more than 25 per cent of a solid or suspended floor involving the replacement of screed or a timber floor deck would have to meet the standards required by the building regulations approved documents. This insulation is placed between the floor joists. Care must be taken however not to harm the character and significance of the building or impede subfloor ventilation for example by blocking air vents so promoting timber decay. The limiting u value the maximum u value that cannot be exceeded required under current building regulations are.

The void below a suspended floor should be ventilated in accordance with current building regulations. Insulating and draught proofing an old suspended timber floor at ground or upper storey level above unheated spaces can save considerable energy. 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. Generally this requirement is 1500mm 2 per metre run of wall or 500mm 2 per m 2 of floor area whichever is the greater.