Acoustic Insulation 100mm DFM Per Pack
£43.00 – £51.00 ex. VAT
Estimated Delivery: 3 - 5 Days
(20th Jun - 22nd Jun)
100mm DFM Acoustic Insulation Slabs are high-density soundproofing insulation slabs designed to reduce airborne sound transmission and control resonance within wall, floor, and ceiling cavities. These versatile slabs are ideal for soundproofing solutions in domestic and commercial spaces, available in thicknesses from 25mm to 100mm and densities from 45kg/m³ to 140kg/m³. Their robust construction absorbs and blocks sound, making them a top choice for enhancing acoustic performance within stud walls and floor joist cavities.
- Soundproofing: Wall soundproofing, floor soundproofing, ceiling soundproofing
- Noise type: Airborne noise (TV, radio, conversation lower-medium noise levels)
- Noise reduction: Varies
- Size: Per slab 100mm x 1200mm x 600mm (0.72sqm)
- Pack varies depending on the density
- Installation: DIY friendly
Our DFM Acoustic Insulation 100mm is a high-density acoustic insulation suitable for soundproofing walls, floors, and ceilings. It is used inside stud walls, between ceiling joists, below floorboards, and in most soundproof systems. DFM sound insulation slabs block and absorb sounds from transferring between rooms.
DFM acoustic insulation slabs are an essential soundproofing material to increase the airborne sound insulation performance of walls, floors and ceilings. Because of its mass, density and sound absorption properties, acoustic insulation is used in soundproof systems inside ceiling cavities, stud walls and floor joists. Available in various thicknesses and densities, we recommend using the 60kg slabs for their acoustic performance.
- Thickness 100mm
- Density 45-140kg/m3 – This is not the weight of the pack or slab; it is the weight of the material if it were a meter cubed
- Slab size 1200mm x 600mm x 100mm (0.72sqm per slab)
- Fire rating Non-combustible to BS 476: Part 4: 1970 (1984) and Euroclass A1, Class 1 Surface Spread of Flame to BS 476: Part 7 1997 and Class ‘O’ to the Building Regulations
- Thermal conductivity 0.034 W/mK
As acoustic slabs are fibrous, handling them with gloves for sensitive skin is advisable to avoid mild irritation.
Before you begin, it is vital to check that you are using the correct thickness of acoustic insulation for the depth of the cavity. Do not compress the acoustic insulation inside a cavity that is not deep enough for the insulation; do not use a 100mm slab inside a 75mm cavity. There is no requirement to fill the cavity with insulation completely.
Acoustic slabs are easy to cut using a knife with a serrated edge. If you have an old bread knife, that would work well.
Cut the slabs wider than the opening between the studs or joist, and the slabs will friction fit. If required, a few well-placed nails or screws can be used to hold the slabs in place or a wire net.
Product Brochure
Due to the nature of most of the materials we supply, orders are typically delivered on pallets.
All orders will be wrapped, protected, and secured to the pallet to ensure they arrive in the best possible condition. Goods will be delivered as near to the property as possible. The drivers will not be able to carry orders into your property.
Deliveries are made between 8am and 6pm, Monday to Friday.
Once an order has been placed, you will be notified of the expected delivery date. Please ensure someone is available to sign for the delivery.
We charge a flat delivery rate of £60 plus VAT for palletised deliveries. We do not charge per pallet, no matter how many pallets are used to deliver your order.
Orders placed for items weighing less than 20kg will be sent via courier for £20 plus VAT.
We have a high stock level and typically deliver orders in approximately three to four working days.
If you want to speak to us regarding your delivery, please call 01423 339163.
Please check out our full delivery terms for more details.
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Alternative solutions
Alternative solutions that will offer different levels of soundproofing or another kind of installation method that might suit your requirements.
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Send us a message, and we’ll respond as soon as possible. Alternatively, call 01423 339163 to speak with an adviser.