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​Q & A

1.              Vibration design

Q: I am designing a floor element and cannot find solution that fulfils the vibration requirements.

A. Kerto LVL-S beams could be investigated for a potential alternative. They are available in many cross-section sizes and vibration could be fulfilled with a minimal material consumption. You can look for more information from Metsä Wood website, datasheet and in Kerto manual.

Kerto LVL S-beams datasheet

Kerto Manual


2.              Wood-based plate with fire resistance requirement "R"

Q: I am searching for a fire-resisting pane with separating function fulfilling a requirement of 30 to 60 min.

A: Kerto-LVL Q panel could be investigated. With base thicknesses from 27 up to 75 mm, it can fulfil a wide range of requirements with optimized thicknesses, for both separating and load-bearing floor panel. The Resistance to fire (R30 or R60) is calculated according to EN 1995-1-2.

You can look more information from Metsä Wood website, datasheet and in Kerto manual.

And about fire resistance:

Finnwood can be freely downloaded from


3.              Studs

Q. Can Kerto LVL be used as studs for partition walls, as an alternative to steel?

A. Yes, Kerto-T is the right material for that. It is straight, light, dimensionally stable and easy to cut-to-size. Installation is fast on a stiff and sustainable support.

You can look more information from Metsä Wood website:


4.              Lintels

Q. I'm designing a lintel for garage door with demanding deflection criteria. Is LVL a good solution?

A. It could be, since Kerto LVL S-beams have very high modulus of Elasticty and you'll gain important millimeters in the design, with less material consumption and keep the flexibility in opening positions. Finnwood is a software tool that could help you precisely design these lintels.

You can look more in Kerto-LVL S datasheet:

Finnwood can be freely downloaded from


5.              Multiple-glued bottom chord

Q. In a 5-storey building, the bottom chords do not have load-bearing compressive capacity enough to resist the load from studs. Is there a LVL solution?

A. A multiple-glued Kerto-LVL Q section could be investigated. With high performances in compression perpendicular to the grain, it allows higher levels of loads without embedment of studs in the chord, making both building and design more reliable.

You can look more in Kerto-LVL Q datasheet:


6.              Higher thicknesses

Q. I saw that standard thicknesses range of LVL is up to 75mm. Are there possibilities for Kerto-LVL to get thicker products?

A. It is possible to multi-glue Kerto-LVL panels to reach higher thicknesses opening a wide range of possibilities for this product: bracings panels with high horizontal loads, columns with high load-bearing capacities. This product is a simple solution for multi-storey buildings.

You can look more information from Metsä Wood website and Kerto manual:

7.              Bracing wall

Q. I'm designing a timber-frame bracing wall in a windy area, and I don't find any standard panel to fulfil the requirements. Is there a solution in LVL?

A. Yes, LVL can suitably replace standard solutions where higher requirements are expected. The installation process remains the same, but higher loads can be transferred. The wall is then stronger, stiffer, and large panel make the process quicker and more efficient. In addition, the vapour resistance of Kerto LVL panel can be considered in moisture transfer analyse of the wall, if needed.

You can look more information on Metsä Wood website and Kerto Manual:

And for moisture transfer: