Rock Wool External Wall Insulation Slabs

Rock Wool External Wall Insulation Slabs are made from stone wool – a blend of naturally occurring volcanic diabase rock. It protects against unwanted noise, fire, and provides unrivalled durability at no cost to the environment. It’s a 4-in-1 solution.


  • Superior Fire Resistance - Put simply, rock won’t burn.
  • Excellent Acoustics - Unique properties help to reduce the effect of noise.
  • Unrivalled Durability - Won’t shrink, won’t move and won’t crumble. It is so durable it will maintain its performance for the lifetime of the building.
  • Sustainable Materials - Made from a renewable and plentiful natural resource, Rock Wool saves fuel costs and energy in use. And it’s fully recyclable, too.

Using external wall insulation is one of the best ways to protect a building and its inhabitants from the environment. Exterior wall insulation protects the building and its occupants from the cold and heat as well as noise and fire. Rock Wool External Slabs are made from stone and the insulation is both water repellent and vapour permeable helping to protect the building from moisture damage. They are also dimensionally stable so it will hold its shape and position over time providing durability, maintaining performance throughout the life of the building. They are non-combustible, therefore any exterior wall insulated with Rock Wool insulation will help to prevent the spread of fire, protecting the building, the occupants and its contents.

Rock Wool is water repellent, and because of the open fibre structure is breathable. This means that moist air can circulate freely out to the open. Ceresit CT137 mineral render would enhance the breathability external wall.

Rock Wool external slabs are used in applications,

  • Rendered facades,
  • Ventilated facades
                                                                 




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50mm Rockwool Fasrock-LL External Wall Insulation Slab 1200mm x 200mm (pack of 8)

50mm Rockwool Fasrock-LL External Wall Insulation Slab 1200mm x 200mm (pack of 8)

1200x200 - 1.92m2  Delivery Time: 1 - 2 days

50mm Rockwool Fasrock-LL External Wall Insulation Slab is a rigid thermal and acoustic insulation product made from volcanic rock, thus extremely durable, fire resistant and specifically created for external wall applications to go directly under render.  The fibres in Fasrock-LL slabs are a..

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other thicknesses
60mm Rockwool Frontrock  MAX E  Dual Density External Wall Insulation Slab 1000x600mm (pack of 4)

60mm Rockwool Frontrock MAX E Dual Density External Wall Insulation Slab 1000x600mm (pack of 4)

1000x600mm - 2.40m2  Delivery Time: 1 - 2 days

60mm Rockwool Frontrock MAX E is a rigid dual density thermal and acoustic insulation slab made from volcanic rock, thus extremely durable, fire resistant and specifically created for external wall applications to go directly under render. The higher density surface of the slab is to take the r..

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other thicknesses
Ceresit Renders Colour Samples Book - stone texture, 1.5mm Grain (real, 210 colours).

Ceresit Renders Colour Samples Book - stone texture, 1.5mm Grain (real, 210 colours).

Sample product  Delivery Time: 1 - 2 days

Ceresit Renders Colour Samples book (real, stone texture samples, 210 colours) - free, but we require it back (carriage paid by us)If you are interested in receiving a quote from us (or if you already have it) for a complete External Wall Insulation System (or just the Ceresit Render), please order ..

75mm Rockwool SP60 Firestop Cavity Slab (pack of 4)

75mm Rockwool SP60 Firestop Cavity Slab (pack of 4)

1000x650mm - 2.60m2  Delivery Time: 2 - 3 days

Guide Price: £158.94 (£190.73 inc VAT)

£61.13/m2 (£73.36/m2 inc VAT)

75mm Rockwool SP60 Firestop Cavity Slab systems form cavity fire stops within commercial and industrial buildings. The solution may be installed horizontally or vertically and is suitable for varying cavity widths in masonry and curtain wall constructions. The product has been designed as a one-piec..

Guide Price: £158.94 (£190.73 inc VAT)

£61.13/m2 (£73.36/m2 inc VAT)

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other thicknesses
50mm CTP Insulation Panel Fixings (pack of 300)

50mm CTP Insulation Panel Fixings (pack of 300)

50x4.5mm CTP - Free Delivery  show quantity discountsDelivery Time: 1 - 2 days

£41.45 (£49.74 inc VAT)

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50mm CTP Insulation Panel Fixings for rigid and semi-rigid insulating boards and panels.  APPLICATIONWood, Panels & sheets ..

£41.45 (£49.74 inc VAT)

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other lengths
50mm FPR Insulation Panel Fixings (pack of 500)

50mm FPR Insulation Panel Fixings (pack of 500)

50x8 FPR - Free Delivery  show quantity discountsDelivery Time: 1 - 2 days

£31.11 (£37.33 inc VAT)

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50mm Polypropylene Insulation fixings for rigid and semi-rigid insulating boards and panels.APPLICATIONConcreteSolid stoneSolid brick ..

£31.11 (£37.33 inc VAT)

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other lengths
70mm Universal Insulation Panel Fixing with Metal Pin LMX10 (pack of 200)

70mm Universal Insulation Panel Fixing with Metal Pin LMX10 (pack of 200)

70mm  Delivery Time: 1 - 2 days

70mm Universal Insulation Panel Fixing with Metal Pin LMX10 is for fixing 10mm thick polystyrene, mineral wool and lamella mineral wool external insulation on concrete, brick, light and autoclave concrete substrates. If the substrate surface is absolutely flat, you may use this anchor to fix in..

other lengths
Ceresit CT16 Primer

Ceresit CT16 Primer

CT16  show quantity discountsDelivery Time: 5 - 7 days

£30.00 (£36.00 inc VAT)

£1.07/m2 (£1.28/m2 inc VAT)

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Ceresit CT16 is designed for priming substrates before the application of mineral, acrylic, silicone and silicone-silicate thin-coat renders, finishes and paint coats. Facilitates the application and texturing of plasters, optimize the drying process and improves the plaster-to-substrate adhesi..

£30.00 (£36.00 inc VAT)

£1.07/m2 (£1.28/m2 inc VAT)

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Ceresit CT17 Profi Deep-penetrating Primer - 10L

Ceresit CT17 Profi Deep-penetrating Primer - 10L

CT17  Delivery Time: 5 - 7 days

Ceresit CT17 Profi is a deep penetrating primer for priming walls, floors, ceilings inside and outside buildings prior to fixing ceramic tiles, pouring floors, fixing floor lining, papering, puttying, painting, or fixing thermal insulation boards.  It is highly recommended for aerated..

Ceresit CT190 Adhesive and Reinforcing Mortar for Mineral Wool External Wall Insulation Slabs

Ceresit CT190 Adhesive and Reinforcing Mortar for Mineral Wool External Wall Insulation Slabs

CT190  Delivery Time: 2 - 3 days

Ceresit CT 190 mortar is designed to warm up external walls of the buildings by application of external thermal insulation composite system using mineral wool façade boards. It is an element within Ceresit Wool Classic insulation system. Ceresit CT 190 mortar is used for fixing of mineral wool façad..

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Ceresit CT84 Express - Foam Adhesive for Internal and External Wall Insulation Boards

Ceresit CT84 Express - Foam Adhesive for Internal and External Wall Insulation Boards

CT84  show quantity discountsDelivery Time: 5 - 7 days

£13.50 (£16.20 inc VAT)

£12.83 (£15.40 inc VAT)

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Ceresit CT84 Express is a one-component low expansion polyurethane adhesive for fixing an External Wall Insulation boards (Phenolic, PIR, Expanded Polystyrene) and also plasterboards in drylining. Approximately 2 hours after application, the insulation boards may be smoothed, anchored and, then the ..

£13.50 (£16.20 inc VAT)

£12.83 (£15.40 inc VAT)

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Ceresit CT87 White Adhesive-Filler Mortar '2 in 1'

Ceresit CT87 White Adhesive-Filler Mortar '2 in 1'

CT87  show quantity discountsDelivery Time: 5 - 7 days

£25.00 (£30.00 inc VAT)

£5.00/m2 (£6.00/m2 inc VAT)

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Ceresit CT87 mortar is designed to insulate external walls of the buildings by application of external thermal insulation composite system using EPS- or mineral wool façade boards. It is an element of following ETICS from Ceresit Ceretherm Premium, Express and Wool Premium. CT 87 mortar is..

£25.00 (£30.00 inc VAT)

£5.00/m2 (£6.00/m2 inc VAT)

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Ceresit ZU Insulation and Mesh Adhesive (Base Coat Render)

Ceresit ZU Insulation and Mesh Adhesive (Base Coat Render)

ZU-25kg  show quantity discountsDelivery Time: 5 - 7 days

£19.00 (£22.80 inc VAT)

£3.80/m2 (£4.56/m2 inc VAT)

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Ceresit ZU is designed to insulate external walls of the buildings by application of external thermal insulation composite system using polystyrene boards. It is a component of following ETICS from Ceresit Ceretherm Premium, Express and Wool Premium. Ceresit ZU is used ..

£19.00 (£22.80 inc VAT)

£3.80/m2 (£4.56/m2 inc VAT)

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Fibreglass Rendering Mesh Roll

Fibreglass Rendering Mesh Roll

1m x 50m (50m2)  show quantity discountsDelivery Time: 1 - 2 days

£39.80 (£47.76 inc VAT)

£0.80/m2 (£0.96/m2 inc VAT)

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Fiberglass reinforcing mesh is coated with acrylic acid copolymer liquid and is therefore water, alkali and age resistant. The mesh has high tensile strength, good dimensional stability, good elasticity, capillary action and corrosion resistance. CHARACTERISTICS Excellent stability, strengt..

£39.80 (£47.76 inc VAT)

£0.80/m2 (£0.96/m2 inc VAT)

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ISO RG Insulation Washer for Soft Panels

ISO RG Insulation Washer for Soft Panels

ISO RG Soft  Delivery Time: 3 - 4 days

ISO RG Insulation Washer for Soft Panels is used for fixing soft insulation panels.     ..

ISO RG Screw Cover Cap Insulation Washer (pack of 100).

ISO RG Screw Cover Cap Insulation Washer (pack of 100).

ISO RG -61928060000 - Free Delivery  show quantity discountsDelivery Time: 1 - 2 days

£22.18 (£26.62 inc VAT)

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Polypropylene ISO RG Screw Cover Cap Insulation Washer is used for fixing insulation panels and it has no thermal transmission due to the screw cover cap. Can be used with screws up to 6mm in diameter...

£22.18 (£26.62 inc VAT)

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TD060 Nylon Support Disc for External Wall Insulation (pack of 100)

TD060 Nylon Support Disc for External Wall Insulation (pack of 100)

60mm - Free Delivery  Delivery Time: 1 - 2 days

£25.15 (£30.18 inc VAT)

TD060 Nylon Support Disc for Polystyrene, Mineral Wool and Lamella Mineral Wool external wall insulation, to be mounted with a galvanized steel screw. The disc has a stopper, which is used to plug the hole, covering the screw and preventing thermal bridging.CHARACTERISTICSImpact resistant nylon..

£25.15 (£30.18 inc VAT)

TDX90 Support Disc for Mineral Wool and Lamella Mineral Wool Insulation (pack of 200)

TDX90 Support Disc for Mineral Wool and Lamella Mineral Wool Insulation (pack of 200)

90mm  Delivery Time: 1 - 2 days

TDX90 Support Disc is a high impact resistant polyethylene 90mm diameter disc for fixing mineral wool and lamella mineral wool external wall insulation. The greater hold-down area of the disk prevents the anchor pulling through the strands of mineral wool and lamella boards. TDX90 is ..

other diameters
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