If you’re planning a decking project, choosing the right support beams is one of the most important decisions you’ll make.

You’ve probably come across the term LVL beams, and wondered what makes them so popular.

In this article, we’ll break down what LVL beams are, how to choose lvl beams for decking, why they’re great for decking, and give you practical tips on how to choose LVL beams that are perfect for your project.

We’ll also share how Westall Timber can help Melbourne customers get quality decking timber and expert advice.

What Are LVL Beams?

LVL stands for Laminated Veneer Lumber. Unlike traditional solid timber, LVL is an engineered wood product made by bonding thin layers of wood veneers together under heat and pressure. This creates a strong, uniform beam that’s perfect for structural applications — like decking.

Benefits of using LVL beams for decking:

  • Superior strength & stability: LVL beams are engineered to be stronger and more consistent than standard timber. They resist warping, twisting and shrinking.

  • Lightweight but strong: Easier to handle on site while still offering excellent load-bearing capacity.

  • Available in long lengths: Ideal for large decks where fewer joins mean a neater, stronger finish.

  • Cost-effective: Over the life of your deck, LVL’s durability can save you money on maintenance and repairs.

How To Choose LVL Beams for Decking

Selecting the right LVL for your deck isn’t just about grabbing the first beam you see at the timber yard. Here’s what to look out for:

1. Size & Span Requirements

The width and depth of your LVL beam will depend on:

  • The size of your deck

  • The spacing of your posts and joists

  • The load it needs to carry (including furniture and people)

Generally, a wider and deeper beam handles more weight and can span longer distances without sagging. Always check with your builder or engineer for the right specifications.

2. Load Ratings & Grade

LVL beams come in different stress grades, which indicate how much load they can safely carry. For decking, you’ll want beams rated for outdoor structural use. Make sure your beams meet Australian standards (AS/NZS 4357 for LVL).

3. Treatment for Outdoor Use

Your decking timber needs to withstand Melbourne’s weather. LVL beams should be treated for durability against moisture, termites and decay. Look for H3 treatments depending on your exposure level.

4. Reputable Supplier

Not all LVLs are created equal. Choosing a trusted supplier like Westall Timber ensures your beams are properly certified and sourced from quality manufacturers. You’ll also get expert advice tailored to your specific project.

Tips for Installing & Maintaining LVL Decking Beams

✅ Store them properly before installation: Keep your LVLs off the ground and covered to protect from moisture.
✅ Use correct hardware: Galvanised or stainless steel fixings are a must for outdoor decks to prevent rust.
✅ Seal cut ends: If you trim your LVL on site, seal the cut ends with a suitable preservative to maintain protection.
✅ Regular inspection: Check your deck annually for signs of moisture damage or movement. Re-oil surrounding timber boards as needed.

Why Choose Westall Timber for LVL Beams in Melbourne?

At Westall Timber, we understand decking from the ground up.

We supply top-quality LVL beams for decking, plus all the other timber and hardware you’ll need. Here’s why Melbourne homeowners and tradies trust us:

  • ✅ Wide range of LVL sizes & grades in stock

  • ✅ Competitive pricing & monthly specials

  • ✅ Knowledgeable staff who give real advice, not just read off a brochure

  • ✅ Pickup & fast delivery options across Melbourne

  • ✅ Easy online shopping at shop.westalltimber.com

    You can now shop construction and building supplies online

Ready to Build Your Deck?

Whether you’re a seasoned tradie or a weekend DIY-er, choosing the right LVL beams is crucial to a safe, long-lasting deck. If you’re still wondering exactly how to choose LVL beams for your decking project, let us help.

👉 Call Westall Timber today on (03) 9546 5622 or visit us at Factory 2/30 Bando Rd, Springvale.

You can also explore our range and order online at shop.westalltimber.com for easy pickup or delivery across Melbourne.

Build it once. Build it right. Trust Westall Timber for all your decking timber needs.

Talk to us. We’re here to help.

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FAQ Section

❓ What are LVL beams and why are they good for decking?

LVL beams (Laminated Veneer Lumber) are engineered timber products made by bonding thin layers of wood under heat and pressure. They’re stronger and more stable than regular timber, making them ideal for decking frames and bearers.

❓ What size LVL beam do I need for my deck?

The right size depends on your deck’s span, load and post spacing. Common LVL sizes for decking include 90x45mm to 300x45mm. It’s best to consult your builder or ask Westall Timber for expert sizing help.

❓ Do LVL beams need to be treated for outdoor use?

Yes. For decks, your LVL should be treated to at least H3 standards to protect against termites, moisture and decay. Always check treatment ratings before buying.

❓ Where can I buy LVL beams for decking in Melbourne?

You can get quality LVL beams, joists and all your decking timber at Westall Timber in Springvale. Shop in-store or order online at shop.westalltimber.com for pickup or delivery across Melbourne.