Installing insulation throughout the home is the best way to improve energy efficiency, create a more comfortable indoor environment and save on your energy bills.One of the most overlooked places to insulate is between floors of a double storey home. Not only will mid-floor insulation give you all the thermal benefits described above, it’s the best way to control noise transfer between storeys too.Read on to find out how to insulate between floors, what the best products are for the job and ways to get started on your project.
Can I Insulate Between Floors of a House?
If you’re building or renovating a double or multi-storey house, it’s not only possible to insulate between the floors, it’s highly recommended that you do so.Insulating the mid-floor area (i.e. between the ceiling of the ground floor and the floor of the second storey) is a fairly straightforward process if the mid-floor cavity is exposed. It can become much trickier if the plastering has already been done. That’s why we recommend installing mid-floor insulation during the building and renovation phases.
Video – Insulation for Between Floors
How to Insulate Between Floors
Mid-floor insulation is typically installed from below when the ceiling cavity is exposed. The steps below explain how to insulate between floors, but it’s best to get expert advice for your situation before starting.
- Seal up any holes with an acoustic sealant. For example, holes for electric wires or plumbing.
- Insert the batts between the ceiling joists, ensuring a snug fit and making sure there are no gaps between the different batts. It’s important to buy the correct width batts to suit the distance between your ceiling joists for the best fit.
- Consider installing resilient channels and then a plaster to help combat impact noise from above. The resilient channel will ensure the plaster does not touch the ceiling joists, minimising the amount of vibrations that pass through.
Insulation Between Your Garage and the Room Above
If your garage is located underneath a living room or bedroom, it’s worth installing acoustic insulation to prevent unwanted noise transfer, for example car noises. Insulating your garage will also improve temperature regulation inside your home, preventing warm air from escaping during winter and keeping the hot air out during summer.
Insulation for a Liveable Attic Space
If you are converting your attic into a liveable space, attic insulation between the attic floor joists will be very important to help control noise and heat transfer.Read our guide on how to install insulation in your attic.
Is It Necessary to Insulate Between Floors?
The main reasons to install insulation between floors is to reduce the noise transfer between the upstairs and downstairs spaces and to improve temperature regulation throughout the home.
In a double storey home, the noise from things like footsteps, music and appliances can travel between floors, creating disturbances. The best way to solve this issue is with acoustic insulation (also called sound insulation). Acoustic insulation between two levels of a house can help to create a quieter home and contain sound to its designated area. Acoustic batts are thicker and more dense than traditional thermal insulation batts, making them particularly effective at reducing the transfer of unwanted sounds. They also have all the benefits of thermal insulation too.
Heat naturally travels from places of high heat energy to places of low heat energy, making it hard to keep your home cool in summer and warm in winter. The best way to prevent unwanted heat loss and gain is to use insulation throughout the home, including between floors.Mid floor insulation can reduce heat loss and gain between the different levels of your home, creating climate zones. This means your indoor heating or cooling appliances will work more effectively and use less electricity to maintain a comfortable temperature in your living space.Check out this video for more reasons why insulating between floors is a good idea.
When Is the Best Time to Install Mid-floor Insulation?
The best time to install mid-floor insulation is during the building stage or during major renovations when there is access to the ceiling cavity. Once the plaster is put in place, it is much more tricky and expensive to re-open the cavity to install the insulation.If you are building a new home or thinking about renovating an older home, now is the best time to invest in mid-floor insulation.
What Insulation Should You Use Between Floors?
At Pricewise Insulation, we recommend installing acoustic insulation between floors or ceiling insulation batts that are rated R4.0 or higher. Insulation batts are a type of bulk insulation which contain millions of tiny air pockets in their structure. These air pockets help break up the path of heat to slow down the rate of heat transfer.The most common materials for insulation batts are glasswool, polyester and rockwool. The R Value of the product indicates how effective it is at preventing heat loss and gain.
How Can I Improve Soundproofing Between Floors?
Installing acoustic batts in the walls and between floors is the most effective way to improve sound insulation between rooms. Other tactics include installing underlayment for flooring, sealing up cracks with caulking and hanging acoustic foam panels.Before deciding what method to use, it’s important to understand the nature of noise.
- Some noises are airborne, meaning they travel through the air. This includes things like voices and music. Improving acoustic absorption with acoustic batts is a good solution for unwanted airborne noise, as well as sealing up air leaks.
- Impact noise travels through solid materials, for example footsteps on timber floors and vibrations from appliances. Insulating between floors and using soft materials such as carpets and rugs is a good way to reduce impact noise.
Best Acoustic Insulation for Between FloorsSome of our most popular mid-floor insulation products include:
- R4.0HD Knauf Earthwool SoundShield Insulation
- R3.1 Bradford SoundScreen Insulation
- R3.1 Pink SoundBreak Insulation
Buy the Best Products for Your Insulation Project Today
If you’re planning on insulating between floors, check out our range of quality mid-floor insulation products. Use the insulation calculators on each product page to help you decide how much you need and place an order with us today.For free expert advice about choosing the right product for your project, get in touch with our team on 1300 729 639.