Kooltherm K10
Soffit Board

Kooltherm K10 FM Soffit Board

Insulation for Structural Ceilings (Soffits)

Kingspan Kooltherm K10 Soffit Board is a premium performance insulation product with a fiber–free rigid thermoset phenolic core, a glass tissue based facing on its front surface and low emissivity composite foil on its reverse surface which is used for structural ceilings.
  • R-value of 16.5 on 2 in
  • Higher R–value per inch than any commonly used insulation
  • FM approved
  • Negligible smoke developed
  • ASTM E 84 rating of 25/20 (flame/smoke)
  • Unaffected by air infiltration
  • Resistant to the passage of water vapor
  • Safe and easy to install
  • Zero ODP, low GWP, HCFC and CFC free

Product Brochure

Kooltherm K10 Soffit Board Brochure

Product Information

Product Data Table
Code Compliance
Safety Data Sheet
CSI 3 Part Specification
BIM Objects / CAD Details
Property Test Method Result
Nominal Thickness
(in / mm)
(in / mm)
1.58 / 40
2.36 / 60
Standard Dimensions
Width (in / mm)
Length (in / mm)
47.244 / 1200
89.370 / 2270
Compressive Strength, Min. 
ASTM C 1621
Water Absorption, Max.
(% by volume)
ASTM C 209
Density, Min.
ASTM C 1622
Closed Cell Content
(% of cells closed)
ASTM D 6226
Air Permeance
(L/S/m³ / (cfm/ft²)
ASTM E 2178
0.001 / 0.000
Water Vapor Permeance, Max.²
Thermal Resistance, R-Value
1.57 in / 40 mm thick 
2.36 in / 60 mm thick
ASTM C 518
Fire & Smoke
Flame Spread
Smoke Developed
ASTM E 84 / UL 723 25

*Contact Kingspan Insulation for available non-stock sizes.
Kooltherm K10 Soffit Board Submittal

Kooltherm K10 Soffit Board Submittal

TER 1601-06

Technical Evaluation Report 1601-06 NFPA 285 - Kooltherm Insulation Board

TER 1601-07

Technical Evaluation Report 1601-07 NFPA 286 - Kooltherm Insulation Board

TER 1603-04

Technical Evaluation Report 1603-04 - Kooltherm Insulation Board Exterior Wall Coverings Attachment

Kooltherm Safety Data Sheet

Kooltherm Safety Data Sheet

Kingspan Kooltherm Section 07 21 00 Building Insulation

Kingspan Kooltherm Section 07 21 13 Phenolic Insulation


CSI 3-Part Specifications

Click the link below to view our CSI 3-Part Specs from ARCAT in a variety of file formats.

Kingspan Insulation CSI 3-Part Specifications

View and Download the Specifications

Kooltherm Insulation Board 15 Year Thermal Warranty

Kooltherm Insulation Board 15 Year Limited Thermal Warranty

Warranty Registration Form 1708 - Interactive_Page_1

Kingspan Warranty Registration Form


BIM Objects / CAD Details

Click the link below to view our BIM Objects / CAD Details from ARCAT

Kingspan Insulation BIM Objects/CAD Details from ARCAT

Download Typical Wall Assemblies


Featured Project / Case Study

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Contact Us

Kingspan Insulation North America

Head Office & Sales Office – North America

Kingspan Insulation LLC

2100 Riveredge Parkway, Suite 175

Atlanta, Georgia



Call: +1(800) 241 4402