50mm Rockwool Flexi Insulation Slab 1200 x 400mm (pack of 12)
50mm Rockwool Flexi Insulation Slab 1200 x 400mm (pack of 12)
Price: £44.90 (£53.88 inc VAT)
Price per m2: £7.80/m2 (£9.35 inc VAT)
- Product Code: A1-1148
- Delivery Time: In Stock 1-2 working days
- Brand: Rockwool (Tech. support: 08712221780)
- Model: 1200x400mm - 5.76m2
- Weight: 9.50kg
- Currently: 13 in stock
Our ratings on 13-04-2026:
4.8 out of 5
50mm Rockwool Flexi Insulation Slab - 1200 x 400mm (pack of 12)
Width: 400mm
Length: 1200mm
Density: 33kg/m3
Weight/m2: 1.65kg
Weight: 9.5kg
Thermal Conductivity: 0.037W/mK
R-Value: 1.32m2K/W
50mm x1200mm x 400mm Rockwool Flexi Insulation Slab is a unique semi-rigid thermal and acoustic insulation product made from volcanic rock. It has a flexible edge, specifically developed using patented technology for a fast and easy, perfect friction fit between timber and metal frame systems. This flexi-edge ensures perfect fit between the slab and the surrounding frame, thus making sure that no gaps caused by contraction and expansion of the structure. This stays effective throughout the life span of the structure, thus minimizing the risk of cold bridging and also successfully blocks the passage of sound, improving the acoustics of the building. Rockwool Flexi Insulation Slabs are made from 97% recyclable and renewable material, They are environmentally friendly and they can lower the carbon footprint of the household.
CHARACTERISTICS
- Excellent thermal and acoustic performance,
- Easy to handle and, install requires no maintenance
- Has a flexible edge prevents gaps in the insulation,
- Non-combustible,
- Environmentally friendly, with no GWP and ODP potential,
- Helps comply with applicable regulations,
- No waste.
APPLICATION
- Separating walls and floors,
- Framed external walls,
- Framed internal partitions,
- Suspended floors,
- Pitched roofs.
Rockwool Flexi expands into the void, ensuring thermal and acoustic integrity, whilst rigid insulations may leave a 6 mm gap, or even fall out, when the timber dries out.
CERTIFICATION
- Achieves a reaction to fire classification of A1, as defined in EN13501-1,
- 1 hour fire resistant floor based on fire test to BS476: Part 21,
- 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.
Rockwool_flexi_datasheet.pdf
Brand: Rockwool
Model: 1200mm x 600mm - 0.72m2
Delivery Time: 2 - 3 working days
120mm Rockwool Steel Frame Slab is a semi-rigid stone wool insulation product engineered for installation between studs in light gauge steel frame wall constructions. Manufactured from volcanic rock, it offers outstanding fire resistance, thermal performance, and acoustic absorption.CHARACTERISTICSO..
Brand: Rockwool
Model: RockLap 17/20mm
Delivery Time: 1 - 2 days
17mm RockLap H&V Pipe Sections are strong lengths of pre-formed insulation with a one piece, factory applied foil facing with integral self-adhesive lap. The integral lap ensures fast and easy installation: just snap the sections onto the pipe, peel off the backing tape and smooth down for a com..
Guide Price
Brand: Rockwool
Model: 1200mm x 1000mm - 18.00m2
Delivery Time: 8 - 12 weeks
85mm Rockwool Hardrock Multi-Fix (DD) Fleece Faced Board is a high-performance stone wool insulation board, expertly faced with a mineral-coated white fleece. It is compatible with a wide array of adhered and mechanically fixed waterproofing systems, including bitumen, single-ply, EPDM, and liquid m..
Guide Price: £698.87
£838.64 inc VAT
Guide Price
Brand: Rockwool
Model: RockLap 17/30mm
Delivery Time: 1 - 2 days
17mm RockLap H&V Pipe Sections are strong lengths of pre-formed insulation with a one piece, factory applied foil facing with integral self-adhesive lap. The integral lap ensures fast and easy installation: just snap the sections onto the pipe, peel off the backing tape and smooth down for a complet..
Guide Price: £10.61
£12.73 inc VAT
Brand: Rockwool
Model: 1200mm x 600mm - 23.04m2
Delivery Time: 7 - 10 days
150mm Rockwool NyRock 032 Rainscreen Slab is a stone wool insulation product specifically designed for use within ventilated cladding systems and sealed systems like curtain walling. It’s manufactured using patented technology, resulting in an improved thermal performance compared to traditional sto..
Brand: Rockwool
Model: RockLap 67/35mm
Delivery Time: 1 - 2 days
67mm RockLap H&V Pipe Sections are strong lengths of pre-formed insulation with a one piece, factory applied foil facing with integral self-adhesive lap. The integral lap ensures fast and easy installation: just snap the sections onto the pipe, peel off the backing tape and smooth down for a complet..