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Kingspan Kooltherm K3 Phenolic Under Floor Insulation

High performance Kingspan product, available in most popular thickness’s from the manufacturers, therefore short lead-times apply. This Kooltherm Range includes the following readily available product thickness's 25mm, 40mm, 50mm, 60mm, 70mm, 75mm and 100mm. Manufactured to order are the following thickness's 80mm, 120mm, 130mm and 140mm

Product Functions Kingspan Kooltherm K3 performance thermal insulation board faced on both sides with a plain (coated) glass tissue autohesively bonded to the insulation core

Kingspan K3 is purpose designed for use in internal underfloor, under-screed, heating applications.

Kooltherm K3 is suitable for the following applications: beam and dense block floors, between floor joists, suspended timber ground floors, between and under floor joists, beam and block floors, concrete ground based floors, floating ground floors, upgrading concrete slab floors, soffit lining, basements, and garage conversions.

 

Product Description

This performance thermal insulation board is faced on both sides with a plain (coated) glass tissue, autohesively bonded to the insulation core. The core is a premium performance CFC/HCFC – free rigid phenolic insulant with a typical density of 35kg/m3. The board has a compressive strength that typically exceeds 120 kPa.

The Board Facings
K3 Floorboard is faced with a composite foil facing, similarly bonded.

The Core
The core of Kingspan Kooltherm® K3 Floorboard is a premium performance rigid thermoset modified resin insulant manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).

Compressive Strength
The compressive strength of Kingspan Kooltherm® K3 Floorboard typically exceeds 120 kPa at 10% compression, when tested to BS / I.S. EN 826: 1996 (Thermal insulating products for building applications. Determination of compression behaviour).

Water Vapour Resistivity
Kingspan Kooltherm® K3 Floorboard produced at Kingspan Insulation’s Pembridge manufacturing facility typically achieves a resistivity greater than 300 MN.s/g.m when tested in accordance with BS EN 12086: 1997 / I.S. EN 12086: 1998 (Thermal insulating products for building applications Determination of water vapour transmission properties).Adjusted for the effect of board joints, the product produced at Kingspan Insulation’s Castleblayney manufacturing facility achieves a resistance far greater than 100 MN.s/g when tested in accordance with the above standard.

Durability
If correctly installed, K3 Floorboard can have 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 K3 Floor boards resist attack by mould and microbial growth, and do not provide any food value to vermin.

Product Benefits

Developed specifically for use in floors, Kingspan K3 is the highest performance insulation board that offers:
Premium performance rigid phenolic insulation – thermal conductivities as low as 0.020 W/m.K
Class 0 fire rated insulation core
Negligible smoke obscuration
Can reduce the cost of related items – soil removal, service connections
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 zero ODP and low GWP


Product availability indicators

K3 - Price and Availability Advisory:

Presently there are no availability restrictions, apart from manufacturing lead-times and minimum quantity order levels on the 80mm, 120mm, 130mm and 140mm boards

Excellent = Product Availability Excellent Good = Product Availability Good Fair = Product Availability Fair Poor =  Product Availability Poor Undetermined = Product Availability Undetermined
Availability relies on stock levels at closest depots and upon transport logistics to effect deliveries


Technical Data

Kingspan K3 Phenolic Insulation Boards for floor / under-floor applications

Product Code

Board dimensions

Thickness (mm)

λ Value (w/mK)

R-value (m²K/W)

U Value (W/m²K)

Weight (kg/m²)

Unit weight (kg)

Kingspan K3 12 x 1.2 x 2.4 = 34.56m² 25 0.021 1.15 0.87 1.01 34.91
Kingspan K3 8 x 1.2 x 2.4 = 23.04m² 40 0.021 1.90 0.53 1.54 35.48
Kingspan K3 6 x 1.2 x 2.4 = 17.28m² 50 0.020 2.50 0.40 1.89 32.66
Kingspan K3 5 x 1.2 x 2.4 = 14.40m² 60 0.020 3.00 0.33 2.24 32.26
Kingspan K3 4 x 1.2 x 2.4 = 11.52m² 70 0.020 3.50 0.29 2.59 29.84
Kingspan K3 4 x 1.2 x 2.4 = 11.52m² 75 0.020 3.75 0.27 2.77 31.91
Kingspan K3 4 x 1.2 x 2.4 = 11.52m² 80 0.020 4.00 0.25 2.94 33.87
Kingspan K3 3 x 1.2 x 2.4 = 8.64m² 100 0.020 5.00 0.20 3.64 31.45
Kingspan K3 3 x 1.2 x 2.4 = 8.64m² 110 0.020 5.50 0.18 3.99 34.47
Kingspan K3 2 x 1.2 x 2.4 = 5.76m² 120 0.020 6.00 0.17 4.34 25.00
Kingspan K3 2 x 1.2 x 2.4 = 5.76m² 130 0.020 6.50 0.15 4.69 27.01
Kingspan K3 2 x 1.2 x 2.4 = 5.76m² 140 0.020 7.00 0.14 5.04 29.03

Thermal conductivity / Lambda value (W/mK) = 0.021 - 0.020 | Compressive strength (kPa) = ≥ 120 | Water vapour resistance (MNs/g) = > 100 | Please Note: R-Value = Thermal Resistance; U Value = Thermal Transmittance Co-efficient; Compressive strength = kiloPascals; Vapour resistance = MegaNewton seconds per gram.

Product Information and Certification

Links to manufacturer's information. Click to download in a separate browser window.

Kingspan K3 Datasheet | Kingspan Product Selector | Kingspan Design Manual | Kingspan BBA U-Value Compliancy Cert. | K3 CE Performance Declaration

 

Kingspan Kooltherm® K3 Range - Certification

K3 Floorboard insulation is manufactured to the highest standards under a management system certified to BS / I.S. EN ISO 9001: 2008 (Quality management systems. Requirements), BS / I.S. EN ISO 14001 : 2004 (Environmental Management Systems. Requirements) and BS / I.S. OHSAS 18001: 2007 (Health and Safety Management Systems. Requirements).

CE Marking - Kingspan has provided Declerations of Performance for its products. CE marking is the visible sign, that the product has met the requirements of the European Norms (ENs) and is therefore compliant with the Construction Products Regulation (CPR).


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Product Installation - Kingspan K3

Kooltherm K3 - Installation Below a Floor Slab

The site should be prepared and foundations, where appropriate, built to damp proof course (DPC) level.

A thin sand blinding may be used to achieve a continuous level surface free from projections over rolled hardcore.

The damp proof membrane (minimum 300 micron / 1200 gauge polythene) should be laid with joints well lapped and folded, to prevent the passage of ground water, over well compacted hardcore, prior to laying the insulation boards.

The membrane should be brought up the surrounding foundation walls until it is sufficiently above the height of the wall DPC so that it will connect with or form the DPC.

Kingspan Kooltherm K3 when the ground floor is left uninsulated, the thermal performance will be poor. To enhance the thermalperformance, complete insulation of the ground floor should beadopted.

The insulation boards should always be loose–laid break–bonded, with joints lightly butted. If two layers of insulation are required, they should be horizontally offset relative to each other so that, as far as possible, the board joints in the two adjacent layers do not coincide with each other.

A strip of the insulation board (minimum 20 mm thick) should be placed vertically around the perimeter of the floor slab in order to prevent cold bridging.

The top of the strip of insulation board should be level with the top of the floor screed and the bottom should be level with the bottom of the horizontal floor insulation, and be closely butted up to it.

Insulation boards should be overlaid with a polythene sheet (not less than 125 micron / 500 gauge), to prevent the wet concrete penetrating the joints between the boards, and to act as a vapour control layer. Ensure the polythene sheet has 150 mm overlaps, taped at the joints, and is turned up 100 mm at the walls.

The subsequent installation of the concrete slab and screed or other flooring material is carried out in a manner similar to that for an un–insulated floor. The concrete slab and screed should be allowed to dry out prior to the installation of the floor finish.

Kingspan K3 - Installation Below a Floor Screed

Concrete slabs should be allowed to dry out fully prior to the installation of the insulation boards (average 1 day per mm of slab thickness). The surface of the slab should be smooth, flat and free from projections.

Beam and block floors should be level and grouted. Rough cast slabs should be levelled using a thin sand blinding to ensure boards are continuously supported.

The damp proof membrane (minimum 300 micron / 1200 gauge polythene) should be laid with joints well lapped and folded, to prevent the passage of ground water, over the concrete floor slab, or beam and block floor prior to laying the insulation boards.

The membrane should be brought up the surrounding foundation walls until it is sufficiently above the height of the wall DPC so that it will connect with or form the DPC.

The insulation boards should always be loose–laid break–bonded, with joints lightly butted. If two layers of insulation are required, they should be horizontally offset relative to each other so that, as far as possible, the board joints in the two adjacent layers do not coincide with each other.

A strip of the insulation board (minimum 20 mm thick) should be placed vertically around the perimeter of the floor slab in order to prevent cold bridging.

The top of the strip of insulation board should be level with the top of the floor screed and the bottom should be level with the bottom of the horizontal floor insulation, and closely butted up to it.

Insulation boards should be overlaid with a polythene sheet (not less than 125 micron / 500 gauge), to prevent the wet screed penetrating the joints between the boards, and to act as a vapour control layer. Ensure the polythene sheet has 150 mm overlaps, taped at the joints, and is turned up 100 mm at the walls.

Use sand and cement screed laid to a minimum thickness of 65 mm for domestic construction and 75 mm elsewhere.

Kooltherm K3 - Suspended timber floor insulationKooltherm K3 the case of suspended timber floors, there is little choice but to install the insulation between the joists. However the thermal bridges created by the joists have to be considered

Fixing floppy quilt insulation between floor joists can be difficult. Insulating a suspended timber floor is made easy using 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.



Contact Manufacturer

Kingspan Limited

Kingspan Kooltherm Phenolic Foam, Therma PIR, and Styrozone Polystyrene range of rigid insulation boards

Pembridge, Leominster, Herefordshire, HR6 9LA

Kingspan Technical Advisory Service.

Telephone: 01544 388 601 - Fax: 01544 388 888
Email: info@kingspaninsulation.co.uk  / technical@kingspaninsulation.co.uk
Web sites: Kingspan Home Page / Kingspan U-Value Calculator.

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Telephone: 0333 8000 828

Facsimile: 0333 7000 797

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