Section Through Suspended Timber Floor
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Suspended timber ground floors consist of the finished timber floorboards being attached to floor joists which are suspended above the subfloor of the foundation.
Section through suspended timber floor. Construction studies drawing detail of suspended timber floor. Different types of ground floor suspended flooring. Suspended hollow or timber floors also have a tendency to creak as the nails work loose over time. These floor joists are raised above the subfloor on small supporting walls called tassel walls or sleeper walls.
Suspended timber floors which are typically found in older houses are normally made from timber floorboards which are then attached to joists just above the foundations of a house. Between january 2013 and june 2015 around 200 000 suspended ground floor insulation measures were recommended as part of the now withdrawn green deal assessments in the uk this was nearly 12 of all recommended. Previous estimates suggest around 60 of the heat loss through suspended timber ground floors might be reduced by insulating them. Suspended timber floors need to have spaces underneath ventilated via air bricks through the outer walls and gaps in any internal walls so that the air can move across the building underneath the floors to prevent the build up of moisture in the timber which could lead to fungal attack.
This study investigates the impact of retrofitting insulation on the thermal performance of suspended timber ground floors through the detailed investigation of a uk case study dwelling. The ground floor beneath a house is generally warmer than the air around it and so it would perhaps be third on your list of priorities behind walls and roofs. Floor detail drawings includes jpeg dxf and dwg cad via download a selection of floor detail drawings including block and beam floors timber suspended floors solid ground floors and upgrade floor details. However it makes sense to consider retrofitting particularly if you have a suspended timber floor.