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Insulation Boards

Insulation Boards

Types of External Wall Insulation Boards

  • Polystyrene Boards,
  • Phenolic Boards,
  • Rock Wool Slabs

Polystyrene Insulation Boards

Extruded polystyrene is made by mixing polystyrene pellets with various ingredients inside a covered metal tank, and then a blowing agent is then injected into the mixture to form gas bubbles and forced to a shaping die. When cooled, it produces a closed cell foam slab that is cut later to boards of given thickness. This rigid insulation board is water resistant.

Expanded polystyrene is made from expandable polystyrene and an expansion agent. It is heated in pre-expanders with steam at temperatures of between 80-100C. During this process of pre-expansion the compact beads grows into cellular beads with small closed cells that hold air in their interior. The size of expansion is pre-determined. On cooling, the beads achieve a greater mechanical elasticity and improved expansion capacity. Then the beads are transported to moulds where they are again subjected to steam and they bind together to become large blocks. They are later sectioned to boards of required thickness.

Extruded polystyrene boards are denser and stronger in compression than the expanded polystyrene boards, and has a lower thermal conductivity. It is a closed cell structure with very low water absorption and vapour transmission properties. 

CHARACTERISTICS

  • Lightweight and ease of handling and installation,
  • Low thermal conductivity,
  • Has excellent mechanical properties,
  • Low water absorption,
  • Unaffected by damp, humidity or moisture,
  • Chemical resistant,
  • Ageing resistant,
  • Resistant to fungi or parasites as they find no nutritional value in the material.

Phenolic Insulation Boards

Phenolic insulation boards offer excellent thermal insulating properties due to the very low thermal conductivity of phenolic foam and allows specified thermal performance targets to be achieved with minimal thickness of insulation. This is particularly significant where space saving is important. Phenolic insulation boards are usually come with factory installed reflective foil on both faces can act as a radiant barrier improving the thermal performance of the insulation boards. Phenolic boards are used in external wall insulation with render.

Characteristics

  • Has a high closed cell content and fine cell structure,
  • Good compressive strength,
  • Has very low thermal conductivity,
  • Lightweight, easy to handle and install,
  • Resistant to fungus, mould growth and will not sustain vermin,
  • Highly resistant to moisture penetration,
  • Has better fire properties,
  • Can be used where a self extinguishing, low smoke emission, material is required,
  • Recyclable.

Rock wool insulation boards

A specialised dual density rock wool board can be used for external wall insulation, where the higher density face of the board can take renders directly, while the lover density inner face can accommodate slight imperfections in the fabric of the building. By using these Dual Density boards for your external wall insulation system, you also gain the added benefit of acoustic insulation -- the open porous structure of the rock wool can absorb and reduce the impact of sound, enabling homeowners to enjoy a comfortable, quiet internal environment. Rock wool is made from molten volcanic rocks, a natural material, therefore completely non-combustible. They have achieved a Euroclass rating of A1 for non-combustibility, the highest rating that an insulation material can achieve.  The dual density board can also be used as insulation behind the rainscreen sheeting and cladding.

Characteristics

  • Excellent thermal and acoustic performance,
  • Higher density top surface,
  • Render can be applied directly,
  • Easy to handle and install without gaps,
  • Breathable,
  • Can prevent surface and interstitial condensation,
  • Can be applied to a wide range of substrates,
  • Protects the fabric of the building,
  • Classified as non-combustible,
  • Zero Ozone Depleting Potential (ODP) or Global Warming Potential (GWP).
Brand: Ceresit Model: 1000x500mm - 30m2
Delivery Time: In stock, 1-2 days
10mm White Expanded Polystyrene (EPS) for Insulated Render Systems - Ceresit CT305 is a very lightweight and easy to handle and install, expanded polystyrene (EPS) board specially designed to be used as a part of various external wall insulation systems. It can be used in applications requ..
£29.99
£35.99 inc VAT
Brand: Ceresit Model: 1000x500mm - 30m2
Delivery Time: In stock, 1-2 days
10mm Grey Polystyrene (Graphite EPS) for Insulated Render - Ceresit CT315 is a high quality expanded polystyrene board enhanced with integrated graphite within its bead structure. The graphite particles integrated within the insulation beads reflects radiant heat and significantly improves insu..
£32.50
£39.00 inc VAT
50mm Rockwool Dual Density Slab for Insulated Renders - 1200mm x 600mm (pack of 4)
New Guide Price
Brand: Rockwool Model: 1200mm x 600mm - 2.88m2
Delivery Time: 3 - 7 days
50mm Rockwool Dual Density Slab is a specialised dual density rock wool board that can be used for external wall insulation, where the higher density face of the board can take renders directly, while the lover density inner face can accommodate slight imperfections in the fabric of the building. By..
Guide Price: £23.61
£28.33 inc VAT
Brand: Kingspan Model: 1200x600mm - 18m2
Delivery Time: In stock, 1-2 days
20mm Kingspan Kooltherm K5 External Wall Board is a high performance rigid thermoset phenolic insulation core faced on both sides with a glass tissue based facing bonded to the insulation core during manufacture. The Kooltherm K5 External Wall Board is manufactured with a blowing agent that has..
£179.85
£215.82 inc VAT
Single Board 20mm Kingspan Kooltherm K5 External Wall Board - 1200mm x 600mm
New Guide Price
Brand: Kingspan Model: 1200x600mm - 0.72m2
Delivery Time: In stock, 1-2 days
20mm Kingspan Kooltherm K5 External Wall Board is a high performance rigid thermoset phenolic insulation core faced on both sides with a glass tissue based facing bonded to the insulation core during manufacture. The Kooltherm K5 External Wall Board is manufactured with a blowing agent that has..
67mm Grey Polystyrene Plugs - pack of 100
New Hot
Brand: Klimas W-M Model: 67mm - pack of 100
Delivery Time: In stock, 1-2 days
67mm Grey Polystyrene Plugs used to cover the pin shaft, blocking the thermal bridge giving a homogeneous surface in external wall insulation systems using grey polystyrene boards.How the plug should be installed. Shown the standard white polystyrene. The same action with grey polystyrene. ..
£6.66
£7.99 inc VAT
67mm Plastic Disk Cutter for Polystyrene Sheets
New Hot
Brand: Klimas W-M Model: 67mm
Delivery Time: In stock, 1-2 days
67mm PVC Disk Cutter is used to cut holes in polystyrene sheets. The end cap can be installed correctly in the hole and cover it to get a homogeneous surface. The tool diameter is 66.7mm, which would give an exact 67mm hole. The cut disk would fit exactly to the hole.CHARACTERISTICSMade from tough p..
£8.88
£10.66 inc VAT
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