Noisy pump or boiler needs soundproofing?

Older or poorly fitted pumps can cause loud noises, especially in enclosed areas such as airing cupboards, causing noise problems in people's homes.

Pumps can create two types of noise.

The first is vibration noise.
If the pump is vibrating into a floor or wall this can be amplified by hollow / enclosed spaces, either in walls or floors. To combat this we would recommend refitting the pump with isolation strips in between the structure and the pump to prevent the vibration entering the structure at source.

The second is airborne noise of the pump mechanism / motor.
To block airborne noise you will need to add mass to the existing structure, depending on the level of noise we recommend our 5mm FlexiSound 5, for low levels of noise or for loud pumps we recommend our Pro-Sound™ SoundBoard 3 system

The benefits and uses of FlexiSound 5

You may also consider using acoustic mineral wool around the pump to absorb sound and to prevent noise echoing and amplifying in enclosed areas.

Finally, you may also need to address the door, as these are normally the weakest point, particularly the small gaps between the frame and the door.

To upgrade doors you can add 5mm FlexiSound to the back of the door, and then apply some good quality draft exclusion material to the door frame to seal any small gaps.

How to Soundproof a Hot Tub pump

The Soundproofing Store are receiving more and more enquiries on how to soundproof hot tub pumps.

It is no surprise that the motor of the hot tub can be loud and be the cause of complaints from neighbours. If possible, keeping the pump on the opposite side of any neighbours will help, as the mass from the hot tub itself will act as a slight sound barrier.

When soundproofing a pump it is important to maintain ventilation around any motors. The soundproofing material shouldn't go right up against any part of the motor, as it could be a hazard when it gets hot. Airflow needs to be maintained to prevent the pumps from overheating. However, with this comes an issue as to the effectiveness of soundproofing, as where there is airflow, there is also a weak point for sound to escape.

Enclosing the hot tub as much as possible can also help to reduce any unwanted noise. A barrier, fence or bushes will help to reduce the spread of airborne noise, including the voices of people when they are in the hot tub.

Add mass to soundproof a hot tub pump

As with soundproofing noisy pumps (above) mass needs to be added to the structure containing the hot tub pump, whilst isolating the pump from the boxing if possible. FlexiSound, (as previously mentioned) is a popular option, as it is extremely heavy and is also waterproof, so is suitable for use outdoor use.