Thermal Performance Report – James Fricker (2024)
ThermaDoor Independent Thermal Engineering Report
ThermaDoor’s R-values are not manufacturer claims — they are independently calculated by a registered thermal engineer to AS/NZS 4859.1 & 2:2018.
R1.43
Winter Assembly R-Value
R1.39
Summer Assembly R-Value
AS/NZS 4859.1/2:2018
Verified Standard
Est. 2012
Australia's Original System
Verified R-Values
R1.43 Winter / R1.39 Summer
Australian Made
Licence 7177
Lightweight
About 7kg - Double Door
Composite Technology
Purpose Built for Garage Doors
15 Year Warranty
Complete ThermaDoor Panel System
Why an Installated Assembly R-Value Matters for Garage Doors
A garage door is a complete moving assembly, not an insulation panel in isolation. Its steel skins, rails, stiles, hinges, air spaces and insulation all influence how heat moves through the door.
For that reason, the most useful performance figure is an installed assembly R-value. It assesses the complete garage door system after the insulation, reflective foil, air cavity and steel structure are considered together.
ThermaDoor’s independent calculation records R1.43 in winter and R1.39 in summer for the complete assessed assembly. This gives builders, energy assessors and homeowners a clear figure to review when comparing garage door insulation solutions.
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What the Independent Report Assessed
The James Fricker report assesses the complete 35mm M Class EPS ThermaDoor system as installed on a metal garage door. It includes the steel door skin, reflective foil, a 10mm unventilated reflective air gap, the EPS core, vinyl inner skin, and the effect of the door’s insulated and edge paths.
The calculation was prepared to AS/NZS 4859.1 and 4859.2:2018 using the parallel-path method. This means the final result considers the complete assessed garage door assembly, including indoor and outdoor air films, rather than an insulation material tested in isolation.
Garage Door Insulation, Home Energy Rating and Moisture Management
Where a garage is attached to, below or beside living areas, the garage door can be relevant to comfort and heat transfer through the home. ThermaDoor provides builders, homeowners and energy assessors with independently calculated garage door assembly R-values and supporting documentation to review within the context of the full building design.
The laminated Sisalation foil layer provides a Class 2 vapour barrier. Within the independently assessed system, its low-emissivity surface works with the specified unventilated reflective air gap to reduce radiant heat transfer across the air space.
Condensation outcomes depend on the complete building, door construction, weather conditions and ventilation. ThermaDoor does not guarantee a NatHERS or Home Energy Rating result. Rating outcomes depend on the whole home, including design, orientation, glazing, insulation, ventilation, air leakage, garage connection and the assessment method.
Verified R1.43 Winter and R1.39 Summer Assembly Results
The independent thermal insulation evaluation was calculated by James Fricker, F.AIRAH F.IEAust CPEng NER APEC Engineer IntPE(Aus), Registered Professional Engineer Victoria PE0005355.
Report i424b, calculated 13 May 2025, records an Overall Total Thermal Resistance of R1.43 in winter and R1.39 in summer for the complete 35mm M Class EPS ThermaDoor system. The calculation was prepared in accordance with AS/NZS 4859 Parts 1 and 2:2018.
View the full engineering report:
Download Full Report© ThermaDoor Pty Ltd | thermadoor.com.au
This report is the intellectual property of ThermaDoor Pty Ltd. It is published here in full in accordance with the conditions of the report. Results may not be quoted without reference to the engineering assumptions contained within. This report may not be reproduced, altered, or misrepresented in any form. Unauthorised reproduction or doctoring of this report is strictly prohibited and may constitute a breach of copyright and professional standards.
Calculated by James Fricker, F.AIRAH F.IEAust CPEng NER APEC Engineer IntPE(Aus) — Registered Professional Engineer (Victoria PE0005355).