# Rockwool Flexi Insulation Slab

#### Rockwool Flexi Insulation Slab 1200mm x 600mm [Data Sheet](https://cdn.shopify.com/s/files/1/0705/2869/6596/files/Rockwool_Flexi_DataSheet.pdf?v=1676389161)

ROCKWOOL FLEXI® 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 and acoustic performance as well as 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® is a multi-use, dual purpose thermal and acoustic 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.

Thickness

Width

Slabs Per Pack

Pack Coverage

Packs per Pallet   

50mm

600mm

12

8.64m2

16

60mm

600mm

12

8.64m2

12

70mm

600mm

8

5.76m2

16

90mm

600mm

6

4.32m2

20

100mm

600mm

6

4.32m2

20

120mm

600mm

6

4.32m2

16

140mm

600mm

4

2.88m2

16

180mm

600mm

3

2.16m2

12

**\*Price on Application on all other sizes. Due to lengthy lead time from Rockwool, please enquire before placing orders.**

## Details

- **Price:** 43.42 GBP - 810.78 GBP
- **Vendor:** Rockwool
- **Type:** insulation slab
- **Tags:** Flexi Slab, Rockwool

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| 50mm / 0330 133 4833 | 48.26 GBP | In stock |
| 60mm (Full Pallet Only) / 0330 133 4833 | 699.75 GBP | In stock |
| 70mm(Full Pallet Only) / 0330 133 4833 | 748.80 GBP | In stock |
| 90mm (Full Pallet Only) / 0330 133 4833 | 810.78 GBP | In stock |
| 100mm / 0330 133 4833 | 44.76 GBP | In stock |
| 140mm / 0330 133 4833 | 43.42 GBP | In stock |
| 180mm (Full Pallet Only) / 0330 133 4833 | 577.21 GBP | In stock |

## Images

- Rockwool Flexi Insulation Slab

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> Source: [Next Day Insulation](https://nextdayinsulations.com/products/rockwool-flexi-insulation-slab)
> Updated: 2026-07-20