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Thermal insulation materials
Thermal insulation is available in many different materials and formats. Read More
Rockwool and glass mineral wool are non-combustible insulation materials. They are supplied in slabs that can be easily incorporated into different types of wall and roof design, although rolls are easy to handle and can be conveniently rolled out where large areas must be covered.
Polystyrene is often used due to the efficient insulation values it can provide.
Sustainable insulation materials are becoming more prevalent and include natural wool, wood fibre, hemp, cork and recycled plastic.
Where insulation is to be retrofitted to a roof void, sprayed insulation is an option. For lofts or attics and floor voids, loose granular insulation is well suited. Blown insulation is used for hard-to-reach areas such as wall cavities.
Thermal insulation materials - helping you find the best solution for your project.
RESISTA MG - PIR insulation board for residential flat roofs
RESISTA MG is a high-performance polyisocyanurate (PIR) insulation board designed for residential flat roofs. Made from closed-cell PIR foam with a mineral-coated fibreglass facer on both sides. Compatible with fully adhered RubberCover EPDM membranes: high-performance PIR insulation board for flat roofs; tthermal resistance for energy savingDensDeck Prime Roof Board - gypsum insulation protection
DensDeck Prime Roof Board is a water and moisture resistant gypsum board with a glass mat facer and pre-primed surface, designed for use as a cover or underlayment board in roofing systems. Delivers high compressive strength, fire resistance, and improved load distribution to protect insulation and extend roof lifespan: water and moistureISOGARD HD Cover Board - high density PIR roofing
ISOGARD HD Cover Board is a 12.7 mm high-density polyisocyanurate (PIR) foam roof board with a mineral-coated fibreglass facer, designed to protect insulation in flat roofing systems and improve load distribution, thermal performance, and durability: high-density PIR foam board for flat roof protection and insulation; weighs 5 kg per 1.22 m x 2.25TVS bagged ceiling insulation pads
TVS 100mm-thick ceiling insulation pads are designed to reduce the amount of heat and sound lost from a room. They are lightweight, low-cost and will not damage the integrity of a ceiling: no loose fibres in the ceiling void; helps reduce room-to-room sound; black polythene enclosed acoustic pad; show black through any ceiling perforationsSpacetherm® ultra-thin insulation for thermal upgrades
Spacetherm® high-performance laminates provide unrivalled performance for thickness, with a class-leading thermal conductivity of 0.014W/mK. This outstanding performance is delivered through the use of Aerogel insulation, which can be bonded to various facings, providing a traditional thermal laminate board with performance far in excess ofCDM Fibran XPS-500C - 50mm-deep thermal insulation board
Newton CDM Fibran XPS-500C, produced exclusively for Newton Waterproofing, is a 50mm-deep, closed-cell thermal insulation board made from rigid extruded polystyrene foam (XPS). The insulation boards are used to form a 50mm spacer adjacent to the CDM BaseDrain and CDM FloorDrain drainage channels within the Newton CDM System cavity drainCavity Wall Foam Insulation - injected polyurethane fill
Closed cell rigid polyurethane foam injected into cavity walls providing high-performance thermal insulation and structural stabilisation. Over 95% closed cell content, ensuring waterproofing and suitability for any exposure zone. Injected as a fluid that expands and sets to completely fill and stabilise the cavity wall. Delivers significantlyNH/ArmaFlex Smart C - halogen free coated elastomeric insulation sheet
NH/ArmaFlex Smart C is a halogen-free, flexible closed-cell elastomeric insulation sheet with a factory-applied pre-covering for enhanced fire safety and mechanical protection. Flame-retardant and low-smoke, pre-covered sheets provides quick, one-step installation and excellent condensation control, durability, and energy efficiencyNH/ArmaFlex Smart - halogen free closed cell insulation
NH/ArmaFlex Smart is a halogen-free, closed-cell elastomeric foam insulation for flexibility and fire-safe performance without toxic emissions. Engineered for high condensation control, UV and ageing resistance, and greater ease of installation than traditional halogen-free foams: halogen-free elastomeric foam based on synthetic rubber, retains
FL01 warm deck flat roof insulation
Visit siteFL01 is a design detail for warm deck flat roofs, constructed with a single-ply membrane using Knauf insulation. The system comprises Rocksilk Krimpact Flat Roof Slab, which is built-up on site over a structural deck with a vapour control layer and a single-ply, mechanically fixed waterproofing membrane on top. It is compatible with all single-ply- PRODUCT
- Knauf Insulation
- K-FLEX ECO elastomeric thermal insulation tubing is formulated and produced without using halogens. Any fumes given off during a fire are transparent and non-toxic to anyone in the vicinity: elastomeric insulation for improved environmental safety; non-toxic in the event of fire; no PVC, HCFC, CFC; halogen free. K-FLEX ECO elastomeric insulation
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- K-FLEX
- Bu02 is a design detail for built-up metal standing seam roofs using Knauf insulation. The system comprises FactoryClad Rolls and Rocksilk Universal Slab, built-up on site with profiled metal cladding sheets and liner sheets. FactoryClad Rolls are a range of flexible, lightweight rolls of resilient, non-combustible glass mineral wool with
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- Knauf Insulation
- K-FLEX ST elastomeric tubes provide thermal insulation for pipes in industrial, commercial and civil applications. ST insulating tubes are supplied in 2m lengths in a wide range of sizes: general-purpose tubular thermal insulation; industrial, commercial and civil applications; thickness: 6-60mm; diameter: 6-210 mm
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- K-FLEX
- Earthwool® FactoryClad is a flexible, lightweight roll of resilient, non-combustible glass mineral wool with exceptionally high tear strength. It is produced in a range of four different thermal conductivities and can be used on metal clad roofs and walls Earthwool® FactoryClad is produced in four thermal conductivites, from 0.032-0.040W/mK, and
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- Knauf Insulation
Er05 rainscreen cladding insulation
Visit siteEr05 is a design detail for rainscreen cladding systems using Knauf insulation. The system comprises Rocksilk RainScreen Slab, which is built-up on site with fixing brackets, support rails and rainscreen panels. Rocksilk RainScreen Slab is a rock mineral wool slab containing a water repellent additive, specially developed for rainscreen cladding- PRODUCT
- Knauf Insulation
ISOVER cavity wall insulation
Visit siteISOVER cavity wall slabs (CWS) are BBA-certified glass mineral wool slabs, made from 75% recycled glass. Cavity slabs offer exceptional thermal performance in external masonry cavity walls. Manufactured with a water-repellent binder, the strong, resilient and flexible slabs are 455mm wide to fit between standard wall tie spacing. Slabs can be- PRODUCT
- Howarth Timber & Building Supplies
- Earthwool® DriTherm Cavity Slab (Rock) is a semi-rigid slab of non-combustible rock mineral wool with a water-repellent additive. It is designed for thermal insulation of masonry cavity external walls and is dimensioned to fit between wall ties at standard spacings. DriTherm Cavity Slab has a thermal conductivity of 0.037 W/mK and is classified as
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- Knauf Insulation
- K-FLEX ST DUCT elastomeric insulation sheets are designed to insulate ventilation and air-conditioning ducts. They are produced in 1.5m widths to reduce installation times. The product comprises an adhesive coating, a removable liner and K-FLEX ST elastomeric insulation: elastomeric insulation sheets for air ducting; designed to isolate
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- K-FLEX
- K-FLEX ST elastomeric insulation sheets provide thermal insulation for industrial, commercial and civil applications, including refrigeration, air conditioning, heating and plumbing, tanks, pipe fittings and water ducts: elastomeric insulation for civil and industrial use; temperatures from -165 °C to +110 °C; euroclass B-s3, d0; fine closed
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- K-FLEX
- K-FLEX® ST/SK is a cut-to-length self-seal elastomeric insulator. The innovative system includes adhesive tapes which are quick and easy to use. Self-sealing insulation tubes save on installation time, reduce the use of other adhesives and improve on-site working conditions. K-FLEX® ST/SK is also available as version with overlap - K-FLEX® ST/SK
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- K-FLEX
ISO-ACOUSTIC INSULATING STRIPS
Visit siteISO-ACOUSTIC INSULATING STRIPS are mineral wool felt sheets with fleece lamination on one side and have excellent sound and thermal insulating properties. They absorb surrounding noises that develop within buildings, ensuring a comfortable background noise level. They considerably reduce echo effects and noise pollution: excellent sound- K-FLEX ECO elastomeric insulation sheets are formulated and produced without using halogens. In the event of a fire, fumes given off during a fire are transparent and non-toxic to anyone in the vicinity: elastomeric insulation for improved environmental safety; non-toxic, transparent fumes in the event of a fire; no PVC, HCFC, CFC; halogen free
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- K-FLEX
- Universal Slab (Rock) provides excellent thermal and acoustic insulation for a wide range of applications in buildings, building services and industry. Universal Slabs are unfaced, rock mineral wool slabs, available in a range of densities from 33-200 kg/m3. The standard product is supplied unfaced, but slabs can also be manufactured with a
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- Knauf Insulation
- The Knauf Insulation Process and Product Development (PPD) Laboratory building has undergone a refurbishment programme, which has resulted in a highly insulated and thermally efficient building fabric. Knauf wanted to make use of all of the internal space of the laboratory, and enhance its external appearance, whilst maintaining a breathable
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- Knauf Insulation

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