Considerations for Interfloor Sound Insulation
Before researching the best sound insulation for a floor, you should first consider the following questions.
1: Where is the noise coming from?
Are you trying to block noise traveling down into your property from above? Or noise traveling up into your property from below?
2: What type of floor are you trying to soundproof?
There are two main types of floor construction: timber joist floors (floorboards on top of wooden joists with plasterboard underneath) and concrete/solid floors (i.e., solid 6-inch concrete floors with screed topping).
3: What type of noises are you hearing?
There are two main types of noise: airborne noise and impact noise.
- Airborne noise; TV, music, people talking, etc.
- Impact noise; footsteps, furniture movement, etc.
4: How loud is the noise you are trying to block?
Different noise levels will require different levels of floor sound insulation. For example, low noise levels such as muffled conversation will require less floor sound insulation compared to higher noise levels. Impact noise alone will require different floor sound insulation compared to airborne noise alone.
For any noise you hear from above, ideally, if possible, we recommend soundproofing the floor above. However, you will need access to the floor above. If, for various reasons, it is not possible to soundproof the floor above, you may instead consider soundproofing your ceiling.
The most common request we receive for interfloor sound insulation is for timber joist floors from above, because these usually perform very poorly for airborne noise and even worse for impact noise, especially if there is a hard floor finish and no insulation between the joists under the floorboards.