Rockwool Insulation Acoustic Slab (15 Products)

What Is Rockwool Insulation?

Rockwool is a robust acoustic, thermal and fire insulation suitable for a range of general building projects as well as specialist specifications such as commercial, leisure and industrial buildings. 

Designed to impede sound transmission between rooms, Rockwool resin-bonded slabs are purposed to quell unwanted sounds and prevent voice leaks in your home, helping you to live in sweet, manufactured silence.

Not only do these premium-quality semi-rigid slabs excel in their soundproofing abilities but they are also rated A1 (non-combustible) on the Euroclass scale, meaning they are first-rate performers when it comes to reducing fire spread.

With a thermal conductivity of 0.035 W/mK, you can rest easy knowing that are also working on protecting the thermal envelope of your home. Fireproofing, soundproofing and thermal efficiency all in one solid solution.

Needless to say, Rockwool is one of the leading manufacturers of rock mineral wool insulation. At Materials Market, we sell a vast range of Rockwool insulation solutions, including Rockwool Flexi slabs and Rockwool RWA45 acoustic slabs. We stock thicknesses: 25mm to 140mm. 

Where Can I Apply Rockwool Insulation Slabs?

Due to the rigid, semi-rigid and flexible nature of stone wool insulation, Rockwool slabs offer outstanding thermal and acoustic protection in internal walls and floors. 

They can also be slotted into spaces like partition walls with ease, whether these have a brick, concrete, timber frame or other base structure. This also ensures they are easy to lay in-between floors as sound insulation slabs too. Overall, Rockwool can be considered for roof, floor and wall insulation. 

Stone wool insulation is also water repellent while simultaneously allowing water vapour to pass through. This makes Rockwool slabs a great addition to ceilings and basements, where moisture and damp could otherwise pose problems.

The slabs can be used for the following construction types:

• Interior timber or steel partition walls
• Interior timber frame floors
• Interior timber frame ceilings
• Pitched roofs
• Acoustic ceilings and partition panels
• I-joist interior partitions
• Party walls

Characteristics of Rockwool Insulation Slabs

● Semi-rigid - Rockwool slabs are semi-rigid meaning you do not have to worry about bowing or sagging over time. 

● Reduces sound transmission - Rockwool slabs are designed to reduce sound transmission. Rock is a naturally poor conductor of sound, making Rockwool the perfect choice for people who want to insulate their homes against unwanted noise. 

● Fire-Protection - Rockwool slabs are manufactured using anti-flammable, thermal insulation material. They are made in part from basalt, a volcanic rock that is highly fire-resistant. The slabs rank Euroclass A1 non-combustible.
● Thermal Efficiency: Our RWA45 products boast a lambda value of 0.035 W/mK.

Rockwool Flexi Insulation Slabs

Rockwool has been producing insulation slabs since the early 1900s and is focused on ‘rising to the development challenges of modern living.’ One of their most innovative solutions is the Rockwool Flexi insulation slab. Like all other slabs in our Rockwool range, the Flexi slab is extremely fire and sound resistant.

Each slab comes with a unique, flexible edge along one side. The edge is patented, which means that you will not be able to get a tighter friction fit with any other slab insulation. The flexible edge allows the slab to fit almost any framework. This innovative solution also reduces the possibility of air gaps, which further strengthens the product’s insulating properties.

Rockwool RWA45 Acoustic Insulation Slabs

RWA45 is the name that Rockwool gives to their most popular acoustic insulation slab. The RW stands for “Rockwool”, A stands for “Acoustic” and the 45 refers to the slab's density of 45kg/m3.

RWA45 is one of the top acoustic insulation products that will eliminate unwanted noise from inside and outside homes and commercial spaces. They can fit into internal and separating walls. Once in place, Rockwool acoustic thermal insulation slabs will reduce noise transmission from adjacent rooms whilst providing exceptional fire resistance. Whether you want a peaceful night’s sleep or an uninterrupted boardroom meeting, Rockwool is the perfect solution.

Rockwool Insulation Thickness

The thickness of Rockwool slab acoustic insulation vary. Our customers can choose from 25mm, 50mm, 75mm, 100mm, and 140mm thicknesses. The government recommends using 250mm thick rock wool insulation in loft spaces to cut your energy bill by up to 20%. With our wide range of thicknesses, you have the freedom to build structures that suit your space.