Jannah Theme License is not validated, Go to the theme options page to validate the license, You need a single license for each domain name.
DesigningDigital MarketingFashion & BeautyGeneral

Rockwool Flexi Insulation

Rockwool Flexi Insulation Slab – 50mm (Pack/12 – 1200mmx600mm)

Rockwool Flexi Insulation has been designed as a multi-use, dual purpose acoustic and thermal mineral wool insulation with a unique flexible edge along one side. The FLEXI slab is manufactured with the patented flexible edge which ensures a perfect fit is maintained between the insulation and the supporting framework. The insulation can be fitted between fresh timber and will expand into the wider space as the timber dries out and shrinks back. Other types of insulation can often become displaced resulting in cold spots or poor acoustics. FLEXI provides excellent thermal. Acoustic performance being A1 classified non-combustible for fire resistance.

ROCKWOOL FLEXI is easy to install and has optimum effectiveness. It is suitable for use all over the home, in pitched roof rafters, framed external walls, internal partitions, intermediate floors, separating walls and floors, and timber suspended ground floors.

Rockwool Flexi Insulation

Thickness: 50mm
All Thickness: 50,60,70,90,100,120,140,180mm
Width: 600mm
Length: 1200mm
Pack Quantity: 12
Pack Coverage: 8.64m2
Density: 33kg/m3
Weight: 15.12kg
Thermal Conductivity:  Thermal – 50mm – 120mm, 0.038 W/mK – Acoustic – 140mm – 180mm, 0.035 W/mK
Thermal Resistance: 1.32m2K/W
Fire Rating (Reaction to Fire): A1(Non-combustible)
Water repellent: Water Repellent    
Water vapour resistance: Negligable


Outstanding thermal, acoustic and fire properties
FLEXI Edge® ensures tight friction fit
Will not slump, studs shrink
Range of thicknesses and widths to suit multiple applications
Non-combustible – Euroclass A1


Rockwool Flexi Insulation is a multi-use, thermal, acoustic and fire insulation product with a unique flexible edge along one side. The patented flexible edge ensures a perfect fit is maintained between the product and its supporting framework for easy installation and optimum effectiveness. FLEXI® is suitable for use between frames in walls, partitions, floors and roofs, without the need for cutting or waste.


Rockwool Flexi Insulation is suitable for use in a wide range of applications. Including acoustic and fire insulation for partitions. Separating walls and floors. Thermal insulation for suspended floors, walls, and roofs.


ROCKWOOL FLEXI is available in a range of thicknesses and widths, with a thermal conductivity of 0.038 W/mK, and 0.035 W/mK at 140mm thicknesses and above

-Fire classification

ROCKWOOL FLEXI® achieves a reaction to fire classification of A1, as defined in EN13501-1.

Thermal applications – timber frame walls

The additional thermal benefits offered by using high performance (HP) breather membranes (BM) and vapour control layers (VCL) over standard membranes are shown below.

-Effective thermal resistance (R-values) comparisons used for external cavities are as follows:

a. Standard BM =0.18m2K/W: or
b. Tyvek Reflex BM = 0.540m2K/W
c. Protect TF200 Thermo = 0.77m2K/W

Effective thermal resistance (R-values) comparisons used for service void cavities are as follows:

a. Standard VCL =0.18m2K/W: or
b. DuPont AirGuard VCL = 0.680m2K/W
c. Protect VC Foil = 0.78m2K/W

Environmentally conscious company, ROCKWOOL promotes the sustainable production. All products provide outstanding thermal protection four added benefits
-Fire resistance
-Acoustic comfort
-Sustainable materials

Health & Safety

The safety of ROCKWOOL stone wool is confirmed by current UK and Republic of Ireland health & safety regulations and EU directive 97/69/EC:ROCKWOOL fibres are not classified as a possible human carcinogen.
A Material Safety Data Sheet is available and can be downloaded from www.rockwool.co.uk to assist in the preparation of risk assessments, as required by the Control of Substances Hazardous to Health Regulations (COSHH).

Rockwool Flexi Insulation Slab – 50mm (Pack/12 – 1200mmx600mm)

Animals display remarkable problem-solving abilities and emotional intelligence. Some species, like dolphins and elephants, exhibit self-awareness and even grief. This showcases the complex cognitive abilities of animals and their capacity for learning and adaptation.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Check Also
Back to top button