Short answer: MGP10 is machine-graded pine suited to standard residential framing — studs, noggings and light spans. LVL F11 offers similar strength to MGP10 but with far greater straightness and dimensional stability, making it a better choice for lintels and trimmers. LVL F17 is the heavy-duty option, rated for higher structural loads and longer spans where MGP10 or F11 won’t cut it. Which one you need comes down to span, load, and how much straightness matters for the job.
If you’ve got an engineer’s specification in hand, it will usually name the grade for you. This guide is for the more common situation: working out which grade actually fits a job when you’re comparing options yourself, or double-checking a spec before you order.
Quick comparison
| MGP10 | LVL F11 | LVL F17 | |
|---|---|---|---|
| Material | Machine graded solid sawn pine | Engineered laminated veneer (LVL) | Engineered laminated veneer (LVL) |
| Grading standard | AS/NZS 1748 | Manufacturer-certified to AS 1720 | Manufacturer-certified to AS 1720 |
| Relative strength | Baseline structural grade | Similar to MGP10, higher consistency | Higher bending strength than F11 |
| Straightness | Natural timber — some variation | Very straight, resists warping | Very straight, resists warping |
| Typical use | Studs, noggings, light framing | Lintels, trimmers, general framing | Beams, long spans, heavier loads |
| Relative cost | Lowest | Mid | Highest |
| Common sizes at JD Timber | 70×35 to 290×45 | 90×35, 90×45 | 90×45 up to 400×45 |
What “MGP10” actually means
MGP10 stands for Machine Graded Pine, stress grade 10. Every length is run through a machine that measures stiffness and flags defects, rather than relying on a person visually inspecting each piece under AS 2858. That’s what “machine graded” buys you: a verified, consistent strength rating under AS/NZS 1748, rather than an estimate.
MGP10 is the everyday workhorse of Australian residential framing. Standard wall studs, noggings, and general internal framing are almost always specified in MGP10 because it’s the most cost-effective grade that meets typical residential load requirements. If you’re framing a standard stud wall or need noggings and blocking, MGP10 is very likely what your project calls for — see our Structural MGP10 Pine range for available sizes.
Where MGP10 falls short: longer spans without intermediate support, and situations where dead-straight timber matters more than raw strength (like a lintel over a wide opening, where any bow in the timber shows up as a visible defect in the finished wall).
What LVL actually is, and why F11 and F17 are different animals to MGP10
LVL (Laminated Veneer Lumber) isn’t solid sawn timber — it’s manufactured by bonding thin timber veneers together under heat and pressure, with the grain running in the same direction through the section. That process is what gives LVL its two headline advantages over sawn timber: it’s dramatically straighter, and its strength is far more consistent from one length to the next, because natural defects (knots, grain runout) are averaged out across the veneer layers rather than concentrated in one spot.
LVL F11 carries a similar structural rating to MGP10 but in LVL form — so you get MGP10-equivalent strength with LVL’s straightness and stability. This makes it a popular choice for lintels and trimmers — see our LVL F11 range — where a true, warp-resistant length saves real time on site and avoids cracking in the plaster above a door or window opening later.
LVL F17 is a genuinely higher structural grade — it carries more bending strength than F11 or MGP10, which is what lets it span further or carry more load in the same section depth. This is where LVL earns its keep on bigger jobs: floor beams, roof beams, verandah beams, and lintels over wide openings like double garage doors, where a standard timber section would either not be strong enough or would need to be so deep it eats into ceiling height. We stock F17 from standard framing sizes up to heavy-duty beam sections — see our full LVL F17 range — for exactly this kind of engineered beam work.
So which one do you actually need?
- Standard stud walls, noggings, general internal framing → MGP10. It’s the most economical option and comfortably meets standard residential requirements.
- Lintels, trimmers, or anywhere straightness matters as much as strength → LVL F11. Same ballpark strength as MGP10, noticeably straighter.
- Long-span beams, wide openings, higher loads → LVL F17. This is usually an engineer-specified size rather than a judgement call — if your plans or engineering documents call for LVL beams, they’ll typically nominate F17 (or occasionally a higher grade again).
- Not sure, or working from an engineer’s drawing that just says “LVL”? Check the drawing for the grade callout (F11, F17, or higher). If it’s not marked, it’s worth confirming with whoever prepared the engineering before ordering — the wrong grade on a load-bearing beam isn’t something you want to discover after installation.
A note on treatment classes
You’ll often see these grades paired with a treatment code — H2S is the most common on our LVL range, meaning the timber is treated against borers and termites for enclosed, above-ground use. This is separate from the structural grade and doesn’t change the strength rating; it’s about durability, not load capacity. If a project needs outdoor, weather-exposed structural timber, look for H3-treated MGP10 rather than standard MGP10 or H2S-rated LVL — H2S isn’t rated for outdoor weather exposure.
Frequently asked questions
Is LVL always stronger than MGP10?
Not necessarily — it depends on the LVL grade. LVL F11 is roughly comparable to MGP10 in strength; the real advantage there is straightness, not raw strength. LVL F17 is where you get a genuine strength increase over MGP10.
Can I substitute LVL F11 for MGP10, or vice versa?
For non-structural or lightly loaded applications this is sometimes done for practical reasons (straightness, stock availability), but for anything load-bearing, always check against your span tables or engineering documentation first — don’t substitute grades on a whim for structural members.
Why is LVL more expensive than MGP10?
The manufacturing process (bonding veneers under heat and pressure) costs more than milling solid sawn timber, and you’re paying for the straightness and consistency that process delivers. For studs and general framing where MGP10 already does the job, there’s no need to pay the LVL premium.
Do I need an engineer to specify LVL F17?
For most standard residential applications, yes — F17 beams are typically sized against span tables or project-specific engineering (AS 1720) rather than picked by feel, given the loads and spans involved.
Need help confirming which grade suits your job, or want current pricing across our MGP10 and LVL ranges? Get in touch with our team — we’re happy to talk through span, load and budget before you order.