Your Destination for Quality Structural Timber Beams

Structural Products include: Pine Framing, E10 Framing LVL, LVL Beams, Hyjoist, I Beams, Yellow Tongue flooring, wet area flooring and plywood products.

Onsite Timber is your one-stop-shop for superior quality structural timber beams and all your timber structure needs. As a leading supplier in the industry, we pride ourselves on offering a comprehensive selection of timber products to professionals and DIY enthusiasts alike. Let our timber beams provide a solid foundation for your projects.

Chose from the following types of timber and stress grades:


Untreated (clear)

This timber has no chemical treating and is unprotected against termites and weather.

H2 (T2 termi-Blue)

Chemically treated for termites. Used indoors and above ground typically in residential construction. This timber should not be exposed to weather for prolonged periods.


Chemically treated for termites and weather decay. Used outdoors and above ground to build structures like pergolas and decks. This timber should not be sitting in water or in the ground.


Treated to protect against termites, weather and moisture. Used outdoors in ground. Such as post supports and pine sleepers.


Treated for extreme exposure to fresh water (usually groundwater)


Treated for prolonged immersion in sea water



Visually graded timber. F5 is the most common and used for

residential construction. Common grades F5, F7, F11 but range from F4 to F34, higher the grade the stiffer the timber.

MGP 10

Machine graded. MGP 10, is most common but they range from MGP10 to MGP15. MGP is typically stiffer than its equivalent in visual grading.

MGP10 vs F5

These are the two most common grades in structural framing timer timber for Sydney.

MGP10 – is technically the better grade and is typically straighter

and stronger. Two storey structures can be built with an MGP10 rating, which is stamped on to every piece of timber.

F5 – Only visually graded, usually has a more knots and therefore technically not as strong. Technically only single storey houses should be built using F5 grade, although this is rarely if ever enforced. F5 is a little cheaper than MGP10 and often comparable in quality to MGP10.

Why Choose Onsite Timber for Structural Timber Beams?

Our wide range of structural timber beams is sourced from sustainably managed forests. We understand the importance of strength, durability, and reliability in every timber structure, which is why we offer beams that are expertly milled for precision and consistency.

Structural Timber Beams to Meet Every Need

Whatever your project, we've got the perfect structural timber beams for you. From construction and home renovation to furniture building and crafting, our robust and versatile selection is designed to support your work. Explore our timber beams range and find exactly what you need to build your ideal timber structure today.

Trusted Supplier of Structural Timber Beams

With a proven track record and hundreds of satisfied customers, Onsite Timber is the trusted choice for quality structural timber beams. Our expertise and commitment to customer service are unparalleled. We aim to deliver the best timber products, right onsite, to help you create robust, beautiful, and eco-friendly timber structures.

Comprehensive Building Supplies at Onsite Timber

Onsite Timber goes beyond structural timber beams to provide a full suite of building supplies that cater to a multitude of projects. From the resilient H2-treated pine, renowned for its protection against termites and decay, to versatile plywood perfect for a variety of applications, we've got you covered. Our selection also includes high-strength LVL timber, engineered for consistency and robustness, providing a dependable solution for heavy-duty structural applications.

Interested in learning more about our structural timber beams? Need expert advice on your next timber structure project? Don’t hesitate to contact us today. At Onsite Timber, we’re always ready to help you bring your vision to life with the best in timber products.