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Product Information

Kingspan K3, from the Kooltherm Range ...

Kingspan Kooltherm K3 Floorboard Insulation for solid concrete and suspended ground floors

A rigid phenolic board for use on ground-supported or suspended concrete ground floors is also suitable for use between the joists of suspended timber ground floors. Premium performance rigid phenolic insulation - thermal conductivity 0.021-0.024 W/mK. Class O / low risk fire rating. Requires no vapour control layer.

Benefits

The Kooltherm K-range is an extensive range of premium performance rigid phenolic insulants for roofs, walls and floors. Rigid phenolic insulation offers the following benefits:
With a thermal conductivity of 0.020-0.023 W/mK rigid phenolic insulation is the most thermally efficient insulation product commonly available
Utilises the thinnest possible insulation board to achieve required U-values
fire performance can be equivalent to mineral fibre
Achieves a Class O fire rating to the Building Regulations / low risk
Achieves the best possible rating of <5% smoke obscuration when tested to BS 5111: Part 1: 1974
Its closed cell structure resists both moisture and water vapour ingress - problems which can be associated with open cell materials such as mineral fibre and which can result in reduced thermal performance
unaffected by air movement - problems that can be experienced with mineral fibre and which can reduce thermal performance
Safe and easy to install - masks are not required, as Kingspan Insulation products do not produce loose dust or irritable fibres
Provides reliable long term thermal performance over the lifetime of the building; and CFC/HCFC-free with zero Ozone Depletion Potential

Applications

Floor level insulation for suspended and solid concrete floors.

Kingspan K3 Board Sizes and Values

Available in in the standard size of 1200mm wide by 2400mm long, and in the following thicknesses ...

Product	R Value (mK/W)	Thermal Conductivity (W/mK)	U Value (W/m²K)	Compressive strength (kPa)	Water vapour resistance (MNs/g)	Reaction to fire
K3 20mm	0.80	0.024	1.25	³ 150	> 15	Class 1
K3 25mm	1.05	0.024	0.95	³ 150	> 15	Class 1
K3 30mm	1.30	0.023	0.77	³ 150	> 15	Class 1
K3 40mm	1.70	0.023	0.59	³ 150	> 15	Class 1
K3 50mm	2.35	0.021	0.43	³ 150	> 15	Class 1
K3 60mm	2.85	0.021	0.35	³ 150	> 15	Class 1
K3 70mm	3.30	0.021	0.30	³ 150	> 15	Class 1
K3 75mm	3.55	0.021	0.28	³ 150	> 15	Class 1
K3 80mm	3.80	0.021	0.26	³ 150	> 15	Class 1
K3 90mm	4.25	0.021	0.24	³ 150	> 15	Class 1
K3 100mm	4.75	0.021	0.21	³ 150	> 15	Class 1

Note:

R-Value = Thermal Resistance; Thermal Conductivity = Lambda Value; U-Value = Thermal Transmittance Co-efficient; Compressive strength = kiloPascals; Vapour resistance = MegaNewton seconds per gram.

Technical Specifications

The Facings

Kingspan Kooltherm® K3 Floorboard is faced on both sides with a plain (coated) glass tissue autohesively bonded to the insulation core during manufacture.

The Core

The core of Kingspan Kooltherm® K3 Floorboard is a premium performance CFC/HCFC–free rigid phenolic insulant of typical density 35 kg/m3.

CFC/HCFC–free

Kingspan Kooltherm® K3 Floorboard is manufactured without the use of CFCs/HCFCs and has zero Ozone Depletion Potential (ODP).

Standard Dimensions 1200mm x 2400mm

Kingspan Kooltherm® K3 Floorboard is readily available from us in the following standard thickness 40mm, 50mm, 60mm, 75mm, 100mm. The following thicknesses are available upon special order ... 20mm, 25mm, 30mm, 70mm, 80mm, and 90mm.

Compressive Strength

The compressive strength of Kingspan Kooltherm® K3 Floorboard typically exceeds 150 kPa at 10% compression and 125 kPa at 5% when tested to BS EN 826: 1996 (Thermal insulating products for building applications. Determination of compression behaviour).

Water Vapour Resistance

Modified to include board facings, the boards achieve a resistance greater than 15 MNs/g when tested in accordance with BS 4370–2: 1993 (Methods of test for rigid cellular materials. Methods 7 to 9). Kingspan Kooltherm® K3 Floorboard should always be installed over a separate damp proof membrane (minimum 1200 gauge).

Durability

If correctly applied, Kingspan Kooltherm® K3 Floorboard has an indefinite life. Its durability depends on the supporting structure and the conditions of its use.

Resistance to Solvents, Fungi & Rodents

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 the suppliers of the spilt liquid. The insulation core is not resistant to some solvent–based adhesive systems, particularly those containing methyl ethyl ketone. Adhesives containing such solvents
should not be used in association with this product.

Damaged boards or boards that have been in contact with harsh solvents or acids should not be used. The insulation core and facings used in the manufacture of Kingspan Kooltherm® K3 Floorboard resist attack by mould and microbial growth, and do not provide any food value to vermin.

Fire Performance

The rigid phenolic insulation core of Kingspan Kooltherm® K3 Floorboard will achieve the results given below, which enable it to be classified by the Building Regulations as being Class 0 and as Low Risk by the Building Standards in Scotland.

The fire rating of Kingspan Kooltherm® K3 Floorboard boards when subjected to British Standard fire tests, will vary, depending on the particular application.

Test - BS 476–6: 1989 (Fire tests on building materials and structures. Method of test for fire propagation for products) - Result - 1989 Index of performance (1) not exceeding 12 and sub Index (i1) not exceeding 6 (for rigid phenolic insulation core)

Test - BS 476–7: 1997 (Fire tests on building materials and structures. Method of test to determine the classification of the surface spread of flame of products - Result - Class 1 rating

Test - BS 5111–1: 1974 (Smoke Obscuration) - Result - < 5%

Suspended timber floor insulation

Fixing floppy quilt insulation between floor joists can be difficult. Insulating a suspended timber floor is made easy using Celotex Insulation cut to fit between joists.

The specification of insulation for ground floors is more complex than that for walls or roofs. This is because the mechanisms for heat flow are affected by the ratio of surface area to perimeter.

With a suspended timber floor, there is little choice but to install the insulation between the joists, but the thermal bridges created by the joists have to be considered.

Continuity of the insulation must be ensured by packing the spaces between the external walls and the joists with insulation. The void below an insulated suspended timber floor must be well ventilated. The insulation must be cut to fit tightly between the joists to prevent heat loss.

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Manufacturer's Contact Details

Kingspan Insulation Limited
Pembridge, Leominster, Herefordshire, HR6 9LA

Kingspan Technical Advisory. Tel: 0870 850 8333
Fax: 01544 387 278 - techline.uk@insulation.kingspan.com

This page was last updated: Wednesday, February 1, 2012

All information is extracted from that provided by the manufacturer, and links to their technical literature are provided above. Please contact the manufacturer for details beyond the scope of this web site.

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