Part E Timber Joist Ceiling System

Name: Part E Timber Joist Ceiling System
SKU: 010054
Availability: InStock

SKU: 010054

£185.00 – £350.00 ex. VAT

Part E Ceiling Kit choose sqm:

Clear

Estimated Delivery: 3 - 5 Days

(24th Aug - 26th Aug)

Achieve compliance with Part E Building Regulations for new builds and conversions using this complete timber joist ceiling soundproofing kit. Designed to reduce airborne sound between separating floors, the system is ideal for use in homes in need of ceiling soundproofing.

Buy a soundproofing system and save on buying the products individually.

Comply with Part E Building Regulations using this timber joist soundproofing kit

Use Part E Building Regulation Ceiling system to meet current sound insulation requirements for new build and conversion projects. Soundproof timber joist ceilings that separate dwellings as part of your soundproofing system to meet part E.

A tried and tested soundproofing system to meet Building Regulations. This ceiling system incorporates all the essential materials required to exceed the requirements for the airborne results as documented in the Part E Building Regulations.

It consists of the Soundbreaker Bar resilient channel isolation system, which decouples the ceiling from the joist. The isolation created using the system reduces the sound typically transferred between floors. The other elements within the soundproof system add mass and density and improve the ability of the ceiling to block sound transference between rooms. The DFM acoustic insulation and soundproof plasterboards ensure the area meets and exceeds the Part E Building Regulation standards.

Perfomance

Airborne 55dB when applied to timber joist ceiling

System thickness

Slim ceiling system only 42mm from the joist

Part E Ceiling Kit

Part E timber joist ceiling soundproofing kit

Part E performance standards

Dwelling-houses and flats – performance standards for separating walls, separating floors, and stairs that have a separating function	Airborne sound insulation DnT,w + Ctr dB (Minimum values)	Impact sound insulation L'nT,w dB (Maximum values)
Purpose built dwellings house & flats
Walls	45dB	-
Floors & stairs	45dB	62
Dwelling-houses and flats formed by material change of use
Walls	43dB	-
Floors & stairs	43dB	64
Rooms for residential purposes – performance standards for separating walls, separating floors, and stairs that have a separating function
Purpose built rooms for residential purposes
Walls	43dB	-
Floors & stairs	45dB	62
Rooms for residential purposes formed by material change of use
Walls	43dB	-
Floors & stairs	43dB	64

It is important to note that when comparing the values, your separating solution must have a noise reduction level higher than the minimum airborne figure and a lower figure for the impact value. The higher the airborne rating, the better; the lower the impact rating, the better the solution performs.

System thickness 42mm (from the bottom of the joist)
Noise reduction
- Airborne 55dB

Thermal Resistance R:

Acoustic plasterboard 12.5 mm = 0.050 m2 K/W
Acoustic insulation 2.90 W/mK

Thermal Conductivity λR:

Acoustic plasterboard 0.25 W/mK to BS EN 12524:2000
Acoustic insulation 0.034 W/mK

Reaction to Fire

Acoustic plasterboard 12.5mm & 15mm Euroclass A2-s1, d0
Acoustic insulation EN13501-1: A1

18mm Interlocking chipboard floor
100mm DFM acoustic insulation
Soundbreaker bars 3m
12.5mm Acoustic plasterboard (two layers) 2400mm x 1200mm (2.88sqm)

Ceiling materials:

Acoustic insulation 100mm/60kg/m3 – High-density sound insulation slabs
Soundbraker bars 3m – Decoupling channel to isolate the stud frame from the boarding
12.5mm Acoustic plasterboard (two layers) 2400mm x 1200mm (2.88sqm) – Denser than standard plasterboard

Select the required sqm area from the dropdown box at the top of the page to see the quantities supplied with this system.

We recommend ordering areas individually and adding them to the basket rather than adding them to one large area. You can order multiple areas in the same order.

Part E Timber Ceiling System

Airborne sound insulation values

RW 55dB

Part E Building Regulations requires a minimum value of at least 43-45dB

Note: Every 10 decibels(dB) reduction in noise level is roughly perceived as a halving of the perceived loudness. So, for instance, if you have a sound that measures 70dB and it decreases to 60dB, it would sound about half as loud to the human ear. Decibels explained.

Remove the existing ceiling to expose the ceiling joist.
Fill the cavity between the joists with the 100mm DFM acoustic insulation slabs. Cut the slabs larger than the opening, and the acoustic slabs will friction fit.
Attach Soundbreaker bars perpendicular to the ceiling joist at 400mm centres.

Affix two layers of 12.5mm acoustic plasterboard to the Soundbreaker Bar.
Leave a 2-3mm gap around the perimeter of the ceiling to reduce flanking sound transmission.
Either plaster skim or tape and join the edges before decorating.

Due to the nature of our materials, most orders are delivered on pallets. Each order is securely wrapped and palletised to ensure it arrives in perfect condition.

Deliveries are made Monday to Friday between 8:00 a.m. and 6:00 p.m., and goods will be dropped as close to the property as possible. Please note, drivers are unable to carry items indoors.

Palletised deliveries are charged at a flat rate of £60 + VAT, regardless of how many pallets are required. Smaller orders under 20kg are sent via courier at £20 + VAT.

We hold high stock levels and aim to deliver within 3–4 working days. Once your order is placed, you’ll receive confirmation of the expected delivery date. Please ensure someone is available to sign for the goods.

Need a specific delivery date or have questions? Contact us or call us on 01423 339163 – we’re happy to help. For full details, please review our delivery terms.

View all ceiling soundproofing products