What is External Wall Insulation?

External Wall Insulation we offer is a composite cladding systems comprised of suitable insulation and water-proof coating which is applied to all the external walls of a building. External Insulation is the simplest and easiest way of thermally and aesthetically upgrading homes and buildings without massive disruption as all works can be carried out whilst the occupants are living un the properties.

Properly insulating your home will not only help reduce your heating and cooling costs but also make your home more comfortable.

U - Value: to achieve U - Value of 0.27W/m2K or better. Full detail of U - Value achieved will be issued following acceptance of quotation.

  • Insulation type: 100mm graphite enhanced polystyrene to stop at eaves; declared thermal conductivity of 0.031 W/mK.
  • Fire barrier: Lamella mineral wool fire barrier
  • Insulation window/door reveals: 10mm and 20mm graphite enhanced polystyrene
  • Insulation below DPC: Hydrophobic polystyrene to prevent water absorption
  • Starter track: Aluminium base rail to ensure even level of first layer of polystyrene
  • Corner profile: PVC corner bead with mesh for protection from mechanical damage
  • Drip profile: PVC bead with mesh for horizontal surfaces to facilitate water run off
  • Window profile: PVC bead with polyurethane tape to eliminate render cracking
  • Expansion joint profile: PVC bead to provide for thermal expansion where necessary
  • Mechanical fixings: Nylon and nylon/steel fixings for polystyrene insulation boards
  • Window sills: Eco-Oversill Ltd has designed and manufactured an over sill made of high density expanded polystyrene.


KerryTherm Insulation Systems

System Description

The External Thermal Insulation Composite System on your house is built up in layers. Beginning with your outside walls, your approved contractor has applied a primer to increase the adhesive properties. The second layer is an adhesive to bond the polystyrene insulation boards to your walls. To further ensure adhesion, the insulation boards have also been mechanically fixed. A reinforcing layer consisting of two coats of a cementous polymer around a glass fibre mesh was added for strength and flexibility. Protective profiles will be used on outside corners and movement joints. A purpose designed over cill will provide a new window cill. Finally, a topcoat of external render has been added for a weather resistant finish. Optionally, you may have a coat of paint added to the render or wish to have it painted in the future. Acrylic render has excellent resistance to fading, chalking and yellowing and therefore tends to maintain its original appearance over time.

  • Increased wall insulation
  • Reduce heating costs – up to 60%!
  • All work by insulation specialist
  • Large range colors and finishes
  • Water proof finish
  • Stops condensation Damp
  • A new look for your house

Thermal modernization

Thermal modernization of a building allows saving over 60% of heating energy costs. The time for the return of expenses incurred in connection with thermal modernization works depends, among others, on the scope of modernization works carried out, the type of heating used in the building, the geometry of the building, the kind of walls and the percentage of area under glass. The key element of the thermal modernization of a building is the thermal insulation of its external walls.

System as a construction product

thermal insulation composite system is a composition of precisely specified layers, fixed to the external wall of the building. Its execution consists in attaching thermal insulation panels to the substrate and covering it with a reinforced coat followed by thin layer render. It`s worth to know that in the light of regulations, a thermal insulation system is treated like a construction product. Therefore, it needs to have National or European (ETA) Technical Approval describing unambiguously the composition and the properties of the system.

Thickness of thermal insulation

The effectiveness of thermal insulation depends first of all on the thickness of the thermo insulating material. As a free-of-charge service for investors, experts make calculations of the U value, i.e. thermal resistance of the walls and the so-called diffusion resistance of walls, i.e. water vapor permeability. The current requirements for the thermal insulation capacity of walls, published in the "Regulation on technological conditions to be met by buildings and their situation", state that the maximum value for thermal conductivity coefficient for external walls Uk(max) must not exceed 0.3 W/m2K (for double layer walls).

The thermal insulation system

with the application of elastified foamed polystyrene of very good characteristics in terms of acoustic insulation - enables simultaneous improvement of thermal and acoustic insulation of external walls. Recommended for buildings situated in the noise zone - streets, railways, airports, industrial areas.

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