Skip to content

Order helpline:

01786 657 911 | Open Mon-Fri 8am-5pm

Insulation
- All Insulation
- Cavity Barriers
  
  Expanding Cavity Barriers
  ROCKWOOL® Cavity Barriers
- Loft & Underfloor Insulation
  
  Loft & Underfloor Insulation
  Loft Legs
- Glass Wool and Mineral Wool
  
  Glass Wool and Mineral Wool
  Glass Wool
  Mineral Wool
  Glass Mineral Wool
- Aerogel
  
  Spacetherm®
- Foam Glass
  
  Foam Glass Aggregate
  Foam Glass Aggregate Floor Build-up
  Foam Glass Slabs
- Recycled Insulation
  
  SupaSoft
- Rigid Insulation Boards
  
  PIR Board
  Phenolic Foam Boards
  Polystyrene
- More
  
  Technical Insulation
  Fire Rated Insulation
  Clearance
Natural Insulation
- All Natural Insulation
  
  Wood Fibre Insulation
  Hemp Insulation
  Sheep's Wool
  Wood Wool Boards
  Sustainable Building
- Wood Fibre Insulation
  
  Wood Fibre Flexi Insulation
  Wood Fibre Rigid Insulation
- Sheep's Wool
  
  Sisalwool
  Sheep's Wool Roll Insulation
  Sheep's Wool Slab Insulation
- Hemp Insulation
  
  All Hemp Insulation
  IndiLoft®
  IndiTherm®
STEICO

Insulate naturally, with wood fibre.
Shop STEICO

SISALWOOL™

The World’s Friendliest Insulation
Shop Sisalwool
Airtightness
- All Airtight
  
  Airtight Membranes
  Airtight Tapes and Sealants
  Expanding Tapes
  Airtight Grommets
  Liquid Airtight Membranes
- Pro Clima
  
  All Pro Clima
  Pro Clima Tapes
  Pro Clima Membranes
  Pro Clima Sealants & Adhesives
  Pro Clima Pipe & Cable Grommets
- SIGA
  
  All SIGA
  SIGA Inside
  SIGA Outside
  SIGA Tapes
  SIGA Membranes
- Rothoblaas (New)
  
  All Rothoblaas
  Rothoblaas Tapes
  Rothoblaas Membranes
  Rothoblaas Sealants
  Rothoblaas Accessories
- Holz Technic (New)
  
  All Holz Technic
  Holz Technic Tapes
  Holz Technic Membranes
  Holz Technic Accessories
Rothoblaas

Meet our newest range of airtightness products.
Shop Rothoblaas

NEW
Building Boards
- All Building Boards
  
  Wood Wool Boards
  Calcium Silicate Boards
  Cement Boards
  Fire Protection Boards
  Render Carrier Boards
  PVC Wall Panels
CEWOOD

Wood wool boards made from 100% natural materials
Shop CEWOOD

Perfect natural plasterboard replacement
Membranes
- All Roofing & Membranes
  
  Airtight & Windtight Membranes
  Breather Membranes for use externally
  Vapour Control Layer (VCL) for use internally
  Roofing Underlay Membranes
  Timber Frame Membranes
  DPM (Damp Proof Membrane) Polythene Membranes
- Ground Membranes
  
  Geotextile
Vapour Control Layers

Shop our range of Vapour Control Layers (VCL).
Shop now

For use internally

Breather Membranes

Shop our range of Breather Membranes.
Shop now

For use externally
Renders & Plasters
- All Renders & Plasters
  
  Plasters
  Renders
  Render & Plaster Primers and Sealers
  Render & Plaster Base Coats
  Mortars & Adhesives
  Hydraulic Lime
  Fillers
Adaptavate

Carbon-negative internal plasters.
Shop now

Baumit PremiumPrimer

Internal surface prep prior to plastering.
View product

20kg
Fixings & Accessories
- Screw & Fixings
  
  All Screws
  Insulation Fixings
  Flat Roof Fixings
  Drywall Screws
  Timber Screws
  Metal Screws
  Washers
  Fixing Accessories
- Accessories
  
  All Accessories
  Tools
  Temporary Surface Protection Films
  Adhesives, Sealants & Tapes
  Insulation Netting
  Loft Leg
  Loft Ladders & Hatches
  Metal Studs & Channels
Insulation Fixings

Shop our range of insulation fixings for Flat Roofs.
Shop now

Insulation Saws

BAHCO Insulation saws are perfect for cutting natural fibre insulation.
Cut now!

Saws & Sharpeners
Clearance
Shop by brand
Contact Us
Learn

Guernsey (GBP £)
Ireland (EUR €)
Isle of Man (GBP £)
Jersey (GBP £)
Jordan (GBP £)
Saudi Arabia (GBP £)
United Arab Emirates (GBP £)
United Kingdom (GBP £)

No account yet? Create Account

Facebook
Pinterest
Instagram
YouTube
LinkedIn

What are You looking for ...

Airtight & Windtight Systems
Natural Insulation
Hemp Insulation
Wood Fibre Insulation
Wood Wool Boards
Renders, Plasters & Mortars

Pro Clima Tescon Vana (Airtight Tape)
LOFT LEG XL Loft Flooring Legs - Raise Loft Boards by 300mm (12 per box)

Most Popular Posts

Cavity Fire Protection: How to Slow the Spread of Fire blog by Insulation Merchant

Cavity Fire Protection: How to Slow the Spread of Fire

Man installing insulation into wall | Shush! A Guide to Acoustic Insulation | Insulation Merchant

Shush! A Guide to Acoustic Insulation

Navigating Your Self-Build Project Blog | Insulation Merchant

Navigating Your Self-Build Project

Cant find something?

We are here to help.

Shop by brand
Contact Us
Learn
Glossary

Guernsey (GBP £)
Ireland (EUR €)
Isle of Man (GBP £)
Jersey (GBP £)
Jordan (GBP £)
Saudi Arabia (GBP £)
United Arab Emirates (GBP £)
United Kingdom (GBP £)

Log in Create Account

Insulation
Insulation
Natural Insulation
Natural Insulation
STEICO

Insulate naturally, with wood fibre.
Shop STEICO

SISALWOOL™

The World’s Friendliest Insulation
Shop Sisalwool
Airtightness
Airtight & Windtight solutions
Rothoblaas

Meet our newest range of airtightness products.
Shop Rothoblaas

NEW
Building Boards
Building Boards
- All Building Boards
CEWOOD

Wood wool boards made from 100% natural materials
Shop CEWOOD

Perfect natural plasterboard replacement
Membranes
Membranes
- All Roofing & Membranes
- Ground Membranes
  - Geotextile
Vapour Control Layers

Shop our range of Vapour Control Layers (VCL).
Shop now

For use internally

Breather Membranes

Shop our range of Breather Membranes.
Shop now

For use externally
Renders & Plasters
Renders & Plasters
- All Renders & Plasters
Adaptavate

Carbon-negative internal plasters.
Shop now

Baumit PremiumPrimer

Internal surface prep prior to plastering.
View product

20kg
Fixings & Accessories
Screws, Fixings & Accessories
- Screw & Fixings
- Accessories
Insulation Fixings

Shop our range of insulation fixings for Flat Roofs.
Shop now

Insulation Saws

BAHCO Insulation saws are perfect for cutting natural fibre insulation.
Cut now!

Saws & Sharpeners
Clearance

Wherever possible, we will Price Match.

Interested in a Trade Account?

Hold stock of most product lines.

Glass Wool and Mineral Wool

Collection: Glass Wool and Mineral Wool

Knauf Acoustic Roll | Insulation Merchant

Clear all filters

Showing 137 of 137 products

Sort by:

Brand

ARC (1)
Firezero (2)
Isover (7)
Knauf Insulation (37)
Mayplas (19)
Rockwool (30)
SAGER (1)
Skanda Savolit (1)
Superglass (38)
URSA (1)

Sub-Brand

Product type

Building Board (1)
Fire (24)
Glass and Mineral Wool (12)
Glass Mineral Insulation (69)
Insulation (1)
Mineral Wool (25)
Technical Insulation (3)

Thickness

Thermal Conductivity (Product)

0.032 (9)
0.034 (8)
0.035 (9)
0.036 (3)
0.037 (11)
0.038 (11)
0.039 (1)
0.040 (13)
0.04 (6)
0.043 (1)
0.044 (12)

Thermal Conductivity (Variant)

0.032 (3)
0.033 (1)
0.034 (3)
0.035 (2)
0.038 (2)
0.040 (1)
0.044 (1)
0.32 (1)

Price

Price: 0 – £812.71

Filter and sort

Filter and sort

Showing 137 of 137 products

Brand

ARC (1)
Firezero (2)
Isover (7)
Knauf Insulation (37)
Mayplas (19)
Rockwool (30)
SAGER (1)
Skanda Savolit (1)
Superglass (38)
URSA (1)

Clear

Sub-Brand

Clear

Product type

Building Board (1)
Fire (24)
Glass and Mineral Wool (12)
Glass Mineral Insulation (69)
Insulation (1)
Mineral Wool (25)
Technical Insulation (3)

Clear

Thickness

Clear

Thermal Conductivity (Product)

0.032 (9)
0.034 (8)
0.035 (9)
0.036 (3)
0.037 (11)
0.038 (11)
0.039 (1)
0.040 (13)
0.04 (6)
0.043 (1)
0.044 (12)

Clear

Thermal Conductivity (Variant)

0.032 (3)
0.033 (1)
0.034 (3)
0.035 (2)
0.038 (2)
0.040 (1)
0.044 (1)
0.32 (1)

Clear

Price

Up to £812.71

Clear

Sort by:

Clear all filters

Clear all filters

Showing 137 of 137 products

50mm Rockwool ProRox WM 960 Wire Reinforced Duct Wrap - 3.7m x (2x500mm)

Free Rockwool gloves with your order!

PROROX by ROCKWOOL®
50mm Rockwool ProRox WM 960 Wire Reinforced Duct Wrap - 3.7m x (2x500mm)

Looking for a price?

Add to a quote for our best rate.
100mm ISOVER Acoustic Partition Roll (APR) - 9.17m x 2/600mm

APR by Isover
100mm ISOVER Acoustic Partition Roll (APR) - 9.17m x 2/600mm

Looking for a price?

Add to a quote for our best rate.
140mm Superglass Timber & Rafter Roll 35

TIMBER & RAFTER ROLL by Superglass
140mm Superglass Timber & Rafter Roll 35

Looking for a price?

Add to a quote for our best rate.
SAGER Saglan T-SI-K 30 A (Glass wool, crimp wrapped, foil faced) - 6500mm x 1200mm x 50mm (7.8m²)

Sale 44%

SAGLAN by SAGER
SAGER Saglan T-SI-K 30 A (Glass wool, crimp wrapped, foil faced) - 6500mm x 1200mm x 50mm (7.8m²)

Regular price

£41.58 per item

Unit Price

£5.33 per m²

ex. GB VAT

Regular price

~~£74.92~~ Save £33.34

Sale price

£41.58 per item

Unit Price

£5.33 per m²

ex. GB VAT

Unit price

per
ROCKWOOL® Sound Insulation Slab

SOUND INSULATION by ROCKWOOL®
ROCKWOOL® Sound Insulation Slab

Looking for a price?

Add to a quote for our best rate.
Rockwool RW3

Free Rockwool gloves with your order!

RW3 by ROCKWOOL®
Rockwool RW3

Looking for a price?

Add to a quote for our best rate.
90mm Superglass Timber & Rafter Roll 32 [Clearance]

Sale 23%

TIMBER & RAFTER ROLL by Superglass
90mm Superglass Timber & Rafter Roll 32 [Clearance]

Looking for a price?

Add to a quote for our best rate.
140mm Superglass Timber & Rafter Roll 35 [Clearance]

Sale 10%

TIMBER & RAFTER ROLL by Superglass
140mm Superglass Timber & Rafter Roll 35 [Clearance]

Looking for a price?

Add to a quote for our best rate.
Rockwool Rainscreen Duo

Free Rockwool gloves with your order!

RAINSCREEN DUO SLAB® by ROCKWOOL®
Rockwool Rainscreen Duo

Looking for a price?

Add to a quote for our best rate.
Troldtekt® Plus Mineral Wool Laminate Acoustic Wood Wool Board

TROLDTEKT® PLUS by Skanda Savolit
Troldtekt® Plus Mineral Wool Laminate Acoustic Wood Wool Board

Looking for a price?

Add to a quote for our best rate.
60mm Knauf Rocksilk Flexible Slab (1200mm x 600mm)

ROCKSILK by Knauf Insulation
60mm Knauf Rocksilk Flexible Slab (1200mm x 600mm)

Looking for a price?

Add to a quote for our best rate.
Rockwool NyRock Rainscreen 032 - 1200mm x 600mm

Free Rockwool gloves with your order!

NYROCK® by ROCKWOOL®
Rockwool NyRock Rainscreen 032 - 1200mm x 600mm

Looking for a price?

Add to a quote for our best rate.
150mm Rockwool Hardrock Multi-Fix (DD) - 1200mm x 1000mm

Free Rockwool gloves with your order!

HARDROCK® by ROCKWOOL®
150mm Rockwool Hardrock Multi-Fix (DD) - 1200mm x 1000mm

Looking for a price?

Add to a quote for our best rate.
105mm Rockwool Hardrock Multi-Fix (DD) - 1200mm x 1000mm

Free Rockwool gloves with your order!

FLEXI by ROCKWOOL®
105mm Rockwool Hardrock Multi-Fix (DD) - 1200mm x 1000mm

Looking for a price?

Add to a quote for our best rate.
80mm Rockwool Full Fill Cavity Batts - 1200x455mm

Free Rockwool gloves with your order!

FULL FILL CAVITY BATTS by ROCKWOOL®
80mm Rockwool Full Fill Cavity Batts - 1200x455mm

Looking for a price?

Add to a quote for our best rate.
75mm Rockwool Full Fill Cavity Batts - 1200x455mm

Free Rockwool gloves with your order!

FULL FILL CAVITY BATTS by ROCKWOOL®
75mm Rockwool Full Fill Cavity Batts - 1200x455mm

Regular price

£64.92 per item

Unit Price

£13.22 per m²

ex. GB VAT

Regular price

Save £-64.92

Sale price

£64.92 per item

Unit Price

£13.22 per m²

ex. GB VAT

Unit price

per
100mm Rockwool Twin Roll - 1200mm x 2750mm (2 rolls)

Free Rockwool gloves with your order!

TWIN ROLL by ROCKWOOL®
100mm Rockwool Twin Roll - 1200mm x 2750mm (2 rolls)

Looking for a price?

Add to a quote for our best rate.
100mm Mayplas Timber Frame Cavity Barrier TCB 551 (115x100mm) - per length

TCB CAVITY BARRIER by Mayplas
100mm Mayplas Timber Frame Cavity Barrier TCB 551 (115x100mm) - per length

This product is not available.

Enquire for more information and advice.
160mm Mayplas Timber Frame Cavity Barrier TCB MP551 CFB (180x150mm) - pack of 5

TCB CAVITY BARRIER by Mayplas
160mm Mayplas Timber Frame Cavity Barrier TCB MP551 CFB (180x150mm) - pack of 5

This product is not available.

Enquire for more information and advice.
155mm Mayplas Timber Frame Cavity Barrier TCB MP551 CFB (175x150mm) - pack of 5

TCB CAVITY BARRIER by Mayplas
155mm Mayplas Timber Frame Cavity Barrier TCB MP551 CFB (175x150mm) - pack of 5

This product is not available.

Enquire for more information and advice.

1
…
3
4
5
6
7

Account

My Account
Register for an Account
My Quote

Account

My Account
Register for an Account
My Quote

Support

Learn
Shop by Brand
Calculators
Contact Us & Support
Glossary & Technical terms
£ Price Changes

Support

Learn
Shop by Brand
Calculators
Contact Us & Support
Glossary & Technical terms
£ Price Changes

Policies

Shipping & Returns Policy
Privacy Policy
Terms of Service

Policies

Shipping & Returns Policy
Privacy Policy
Terms of Service

Call us

We're open 7.30am to 5pm

Monday to Friday

Ultimate Insulation Supplies Ltd

Unit 3 24 Munro Road

Springkerse Industrial Estate

Stirling FK7 7UU

what3words: ///radiates.webcams.dramatic

Currency

Guernsey (GBP £)
Ireland (EUR €)
Isle of Man (GBP £)
Jersey (GBP £)
Jordan (GBP £)
Saudi Arabia (GBP £)
United Arab Emirates (GBP £)
United Kingdom (GBP £)

We accept:

Follow Us:

Facebook
Pinterest
Instagram
YouTube
LinkedIn

Don't miss out!

E-mail

© Copyright 2025 Ultimate Insulation Supplies Ltd trading as Insulation Merchant | All Rights Reserved. Registered in Scotland SC427626 | VAT Registration No. 138 3712 12 | Developed in-house by the Ultimate Group.
Insulation_Merchant_V2.2.1

Cart

0 items

Your cart is empty

Loading...

Subtotal:

£0.00

VAT included. Shipping calculated at checkout.

Go to Cart

Choosing a selection results in a full page refresh.