I-Joists
At Donaldson Timber Engineering, we design all of our I-joist flooring systems using Finnjoist.

At Donaldson Timber Engineering, we design all of our I-joist flooring systems using Finnjoist.
I-joists are the most common way to structurally frame an upper floor in a residential building. I-joists are also commonly used in flat roofs for both residential and commercial buildings. At Donaldson Timber Engineering, we design and cut all of our I-joist flooring systems using MetsaWood's Finnjoists.
Finnjoists are manufactured using OSB for the webs and Kerto LVL for the flange material. This results in an I-Joist that is lightweight, incredibly strong and dimensionally stable.
Sourced from environmentally legal and sustainable PEFC materials
Get in touch with our team to find out more about our expertise with Finnjoist, and how we offer the complete flooring solution.
More joists
03 OPTIONS
01Open Web / Posi Joists
We design all of our Open Web Joists Flooring Systems using Mitek Posi-Joists.
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02Firrings
Firring timbers are a product used in flat roof construction to create an acute slope on the roof to allow rainwater to run into the gutters.
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03Chipboard Flooring
We supply a range of EGGER structural flooring products, including EGGER Protect flooring panels and EGGER peel clean extra.
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