Hemlock - Thermally Modified
(Tsuga heterophylla)

The beauty of timber

A carbon negative architectural design solution, whilst embracing biophilia

Thermally Modified Hemlock undergoes a natural, non-toxic process that heats the timber. This process removes organic compounds from the wood cells so it will not absorb water, expand, contract or provide food for insects and Fungi. Thermally Modified hemlock is extremely stable and weather resistant. Naturally light and uniform in colour, Thermally Modified Hemlock will accept any stain colours which makes it totally customisable for both interior and exterior use. Because the thermal modification process reduces cupping and warping, this product is a dream to install and lays straight and flat. Thermally Modified Hemlock is 100% plantation timber and PEFC Certified.


Passed down through generations, is our focus on the sustainable supply of PEFC™ and FSC™certified timber. Modinex hand selects the highest grade logs from our supply partners, which are then sawn in close proximity to the sustainably managed forest to reduce transport emission. They are then further processed in our Queensland facilities new next generation energy efficient machinery.

Our strong partnership with forest owners in Australian & Canada for over 40 years, ensures a consistent supply of high quality PEFC™ certified timber. As part of Defining a Higher Standard® of forest stewardship our supply partners are continuing to grow mutually beneficial relationships with First Nations. Since 2015, Modinex has held PEFC™ Chain of Custody certification which has been maintained for 8 years after passing regular audits. Chair of custody is essential in ensuring the responsible and sustainable harvesting and processing of timber and providing transparency to our clients.

Technical Facts

Botanical Name: Tsuga heterophylla (Thermally Modified)
Species Category: Softwood
Sustainable Certification Available: PEFC
Suitable for external use: Yes
Dry Density (Seasoned): 460kg/m3
Janka Dry Hardness: 2.6-3.0kN
Durability Above Ground Class:
Indoor Group Fire Rating (AS 5637.1): Group 3
Indoor Group Fire Rating
(If Fireshield is applied):
Group 1
BAL Fire Rating (AS 15030.8.2): NA