Kooltherm K5
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Great Britain & Ireland K5 External Wall Board External Insulation for Masonry Walls  Premium performance rigid thermoset insulation - thermal conductivities as low as 0.021 W/mK  Suitable for use behind traditional and lightweight polymer modified renders  Unaffected by air infiltration  Resistant to the passage of water vapour  Easy to handle and install  Ideal for new build and refurbishment  Non-deleterious material  Manufactured with a blowing agent that has negligible OD

Typical Constructions and U-values Assumptions The U-values in the tables that follow have been calculated using the method detailed in EN ISO 6946: 2017 (Building components and building elements. Thermal resistance and thermal transmittance. Calculation methods), and using the conventions set out in BR 443 (Conventions for U-value calculations). They are valid for the constructions shown in the details immediately above each table. 100 mm Brick / 50 mm Cavity / 100 mm Brick Wall For the refurbishment examples, the internal wall finish is taken as 13 mm dense plaster unless stated...

Typical Constructions and U-values 102.5 mm Brick / 50 mm Cavity / 100 mm Block Wall Solid Brick Wall Kingspan Kooltherm® K5 Bedding compound / adhesive Bedding compound / adhesive Mechanical fixings Mechanical fixings Render system incorporating EML or glass fibre mesh Render system incorporating EML or glass fibre mesh Figure 3 U-values (W/m2K) for various thicknesses of Kingspan Kooltherm® K5 on different thicknesses of brickwork with 10 mm polymer render U-values (W/m2K) for various thicknesses of Kingspan Kooltherm® K5 with 10 mm polymer render Inner leaf blockwork density and l-value...

Typical Constructions and U-values Refurbishment 100 mm Dense Block* / 50 mm Cavity / 100 mm Dense Block* Wall (Original Render Removed) 215 mm Solid Blockwork Wall 3 mm skim coated 12.5 mm plasterboard on plaster dabs Bedding compound / adhesive Bedding compound / adhesive Mechanical fixings Mechanical fixings Render system incorporating EML or glass fibre mesh Render system incorporating EML or glass fibre mesh U-values for various thicknesses of Kingspan Kooltherm® K5 with 10 mm polymer render Insulant thickness (mm) Thin Joint Aerated (0.11)** Blockwork density and l-value (W/mK)...

Typical Constructions and U-values 100 mm Dense Block* Outer Leaf / 50 mm Cavity / 100 mm Block Inner Leaf Kingspan Kooltherm® K5 3 mm skim coated 12.5 mm plasterboard on plaster dabs Bedding compound / adhesive Mechanical fixings Render system incorporating EML or glass fibre mesh Figure 6 U-values (W/m2K) for various thicknesses of Kingspan Kooltherm® K5 with 10 mm polymer render Inner leaf blockwork density and l-value (W/mK) Thin Joint Aerated (0.11)*** Calculations assume dense block of λ-value 1.13 W/mK ** A 6.6% thermal bridging factor has been assumed for the effect of mortar...

Design Considerations Linear Thermal Bridging at Junctions Basic Principles Linear thermal bridging describes the heat loss / gain that occurs at junctions between elements e.g. where an external wall meets the roof, or at junctions around openings in the building fabric where thermal insulation is discontinuous e.g. sills, jambs and lintels. Interruptions within the insulation by materials with poorer insulating properties can result in a thermal bridge, which can lead to problems of condensation and mould growth, especially if there is a drop in surface temperature. The heat flow at these...

Design Considerations  For a new build construction, where Kingspan Kooltherm® K5 is used to sheath a frame construction at the edge of ground floors, the distance between the top surface of the floor insulation or perimeter insulation upstand, and the bottom of the wall insulation must be a minimum of 150 / 225* mm for a concrete floor and 200 mm for a suspended timber floor. The further appropriate wall insulation extends past the floor insulation, the better the thermal performance of the junction between the wall and the floor will be. * 150 mm applies to the UK and 225 mm to the...

Design Considerations Product classifications Fire Safety For guidance regarding the routes to compliance for meeting the fire safety requirements of the Building Regulations / Standards in Great Britain, refer to the relevant Technical Bulletins at www.kingspan.com/gb/en/about-us/ sustainable-buildings-hub/Fire-safety/. Pr_25_71_63_59 Phenolic Foam Boards Pr_80_77_76_62 Phenolic Foam Insulation CAWS M21 210, M21 220, M21 230 (Standard and Intermediate) M21 20 (Minor Works) Details also available at the NBS Source. Building Information Modelling (BIM) Kingspan Insulation’s BIM objects can...

Sitework Insulated Render Systems The installation guidance for Kingspan Kooltherm® K5 outlined in this section must only be followed after considering the below. A minimum of 5 fixings are required to secure an insulation board to the masonry wall. Board edges at openings and external corners should be fixed with fasteners at maximum 300 mm centres. There are potential restrictions placed upon this product which vary dependant on building type, height, construction and location in Great Britain. For guidance regarding the routes to compliance for meeting the fire safety requirements of the...

Sitework General PVC corner detail Insulated reveal Window Oversill with boxed end, trimmed on-site and fixed to reveal Mastic / silicone seal between oversill, window frame and render Original sill cut back to allow full depth of insulation to be carried up to the reveal 20 mm (min.) of Kingspan Kooltherm® K5 under the oversill Oversill with boxed end Mechnical fixing Render finish Kingspan Kooltherm® K5 Bedding compound / adhesive Cutting  Cutting should be carried out either by using a fine toothed saw, or by scoring with a sharp knife, snapping the board over a straight edge and then...

Product Details The Facings Resistance to Solvents, Fungi & Rodents Kingspan Kooltherm® K5 is faced on both sides with a glass tissue based facing, autohesively bonded to the insulation core during manufacture. The insulation core is resistant to short-term contact with petrol and with most dilute acids, alkalis and mineral oils. However, it is recommended that any spills be cleaned off fully before the boards are installed. Ensure that safe methods of cleaning are used, as recommended by suppliers of the spilt liquid. The insulation core is not resistant to some solvent-based bedding...