Is There Any Point Insulating Between Floors of a Double Storey House?

If you’re building or renovating a double or multi-storey house, then there may be good reason to considering insulating the mid-floor, i.e. between the ceiling of the ground floor and the floor of the second storey. The main reason to insulate between floors is to reduce the noise transfer between floors.

Acoustic Insulation in the Mid-Floor

Thermal acoustic insulation is very effective at reducing airborne noise. Children shouting, loud music or even a noisy washing machine can create disturbances to the rest of the household. Sound insulation between two levels of a house can help to create a quieter home and contain sound to its designated area. In the evenings families don’t have to go around on tip-toe just because young children have gone to bed.

Thermal Benefits with Mid-Floor Insulation

There may also be a thermal benefit, in particular if most of your time will be spent either in the upper or lower level of the house. In that case, any indoor heating or cooling appliances will also work more effectively, e.g. cool air from your downstairs air-conditioner won’t be so quickly transferred through the ceiling and into the rooms above.

Photo of a man installing Bradford sound insulation batts between floors

Climate Control for Added Comfort

Many houses are built with the living areas downstairs and the sleeping quarters upstairs. In these cases, it is often desirable to heat the living rooms more than the bedrooms. People living in houses with no mid-floor insulation will often find that their downstairs living areas are quite cold, even if this is where their heating is targeted. The reason for this is often because the heat is transferred through the uninsulated ceiling. To counter this, the thermostat may be turned up, but this may result in overheating the bedrooms, which may end up being uncomfortably warm.

Energy Savings By Directing and Containing Heat

Householders may also invest in split systems from an energy savings point of view. By closing off areas and directing heat to frequently used zones of the house, families can reduce their energy consumption and save on gas and electricity bills. In this case it is also recommended to invest in an adequate level of thermal insulation, so that the targeted heat stays in the area. This includes internal walls and in the case of multi-storey houses, the mid floor.

Insulate the Mid-Floor During Construction

If you are considering installing insulation between the floors of a multi storey house, make sure you get it done while the house is being constructed or during a renovation. Once the ceiling and floor above is sealed you won’t be in a hurry to dismantle it. Not only will you reap the benefits, but insulation adds value to your home and vendors now have the opportunity to add insulation specifications to their listing when putting their property up for sale.