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TekTherm™ AK300HT

Material Specification

TekTherm™ AK300HT has the highest level of compressive strength and thermal insulation of all available products and can meet demanding application specifications.

TekTherm™ AK300HT has been independently tested and certified so specifiers and customers know they are buying a quality product. We can supply this in cut pads, strips or in any other shape within the parameters of the material.


  • Steel to Steel
  • Steel to Concrete
  • Concrete to Concrete
  • Steel to Timber
  • Balconies
  • Canopies
  • Brise-soleil
  • Roof Plant enclosures
  • Façade Systems
  • Balustrading
  • Parapets
  • Man-safe systems
  • Staircases
  • Building Maintenance Units

Steel to Steel Connection

Column Base Connection

Brickwork to Cladding Connection

Steel to Concrete Connection


Compressive Strength at 23°C (73°F)UnitValueTest Standard
CharacteristicMPa (PSI)259.5 (37,637)ISO 826
DesignMPa (PSI)198 (28,700)ISO 826
Mechanical Properties
Flexural StrengthMPa (PSI)170 (24,656)ISO 178
Shear StrengthMPa (PSI)8000ISO 178
Modulus of ElasticityMPa (PSI)10000 (1,450,377)ISO 178
Friction Coefficient/0.15ASTM D1894
Physical Properties
Densityg/cm³ (lb/ft³)1.5 (+/-0.1) (94)ISO 1183
Water Absorption 24h 23°C (24h 73°F)%0.49ISO 12087
Thermal Properties
Operating Temperature°C (°F)-180 +200 (-292 +392)
Coefficient of Linear Expansion //1.0E-6 / K20DIN 53752
Thermal ConductivityW/m. K
DIN 52612
Flame RetardancyV0UL94
Thickness Available
Width 1,220mm (96”) x Length 2,400mm (48”)mm ( “ )6 (0.236)
10 (0.393)
12 (0.472)
15 (0.59)
20 (0.787)
25 (1)

Supply Chain Responsibilities

  • Thermal Modelling – Architect
  • Structural Evaluation – Structural Engineer
  • Cost Evaluation – QS
  • Installation – Contractor


The below information is required for quotations

  • Material spec – TekTherm™ AK200, AK300HT or AK-FR
  • Pad dimensions
  • Thickness
  • Number and size of holes
  • Quantity
  • Delivery Address

RoHS Directive

Hazardous products listed in the EU-directive 2011/65/EU (ROHS-directive), §4 section 1, are not used as ingredients in this material.


  • Asbestos free
  • Low heat conductivity
  • Excellent tolerances with respect to parallelism
  • Long life expectancy > 50 years (dependent on operating conditions)
  • Low water absorption
  • Good hydrocarbon stability
  • Good chemical stability
  • Excellent mechanical durability
  • Very good electrical properties
  • UL 94-V0

We aim to deliver all orders within 5 working days however we are well versed with industry requirements and therefore will always turn these around in the shortest time possible. Please call us if you have an urgent requirement and we will arrange your order to be expedited.


On and Off-Site Support

We are here to discuss your application and assist you in selecting the right thermal break materials to meet your project specification.

Tekla Plugin available for Thermal Breaks Ltd.

This plugin tool provides easy and efficient design and detailing of our Thermal Break plates within structural steel framed buildings.

United Kingdom United Kingdom

Thermal Breaks Ltd

18 Twyford Business Centre
London Road
Bishops Stortford
CM23 3YT

0800 6444 949
Contact us

United Kingdom United States

Thermal Breaks LLC

3870 La Sierra Ave
Unit #2000
Riverside CA 92505

(951) 519-9855
Contact us

United Kingdom Ireland

Sitetech Products Ltd

Unit 514 Greenogue Business Park
Co. Dublin

+353 401 6554
Contact us