Suspended Floor Insulation Building Regulations

Generally this requirement is 1500mm 2 per metre run of wall or 500mm 2 per m 2 of floor area whichever is the greater.

Suspended floor insulation building regulations. Heat rises as denser colder air falls and pushes the warmer air up and is more likely to escape through the roof. The importance of insulating floors. 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 void below a suspended floor should be ventilated in accordance with current building regulations.

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

Insulating and draught proofing an old suspended timber floor at ground or upper storey level above unheated spaces can save considerable energy. Conventional foil faced impervious non breathable pir pur boards are commonly used in suspended floor upgrades and this can provide some thermal performance benefits in the short term at least. The limiting u value the maximum u value that cannot be exceeded required under current building regulations are. Read more about changes to thermal elements in the external walls section.

Read more about changes to thermal elements on the external walls page. 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.