CLT log for professional
construction brings
additional cost-efficiency.

We combined the best features of logs and CLT (Cross Laminated Timber).


The solid ProLog is a durable, natural, and environmentally friendly material that is suitable for and can be combined with all surfaces and structures. The cross-laminated construction of ProLog achieves an unprecedentedly stable and durable product for cost-effective construction.

We use only slow-growing densely fibrous pine or spruce, rich in heartwood,  harvested from the unspoilt, sustainably managed PEFC-certified forests of Kainuu region in north-eastern Finland. This is why we produce the best CLT material in Northern Europe. Now also available as logs

Non-settling and durable ProLog

A TOP PRODUCT FOR MODERN WOOD CONSTRUCTION

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Optimized height
Cost-effective 214 mm high log without glued horizontal joints is compact, stable, and aesthetic, making it easier to handle during the construction phase.

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Durability and stability
Cross-laminated structure where loads are directed onto non-settling vertical lamellas.

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High-quality and durable glue-lamination
Manufactured using the market’s highest-quality CLT-technology by CrossLam factory.

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Refined exterior finish
All breathable surface treatment agents are suitable for both interior and exterior surfaces, providing an almost limitless range of color options.

ProLog 135 x 214 mm

For vacation homes and partition walls

For vacation home construction and partition walls, ProLog 135 mm is an excellent choice. A strong and beautiful material with good thermal insulation value. It can be used in combination with stronger logs for partition wall structures.

Dimensions: 135 x 214 mm, height 204 mm.
Maximum length: 12 meters.

For more detailed product information

ProLog 204 x 214 mm

For detached houses and public buildings like schools and daycare centers

The non-settling, durable, and stable 204-millimeter ProLog is well-suited for buildings intended for year-round use.

Dimensions: 204 x 214 mm, height 204 mm.
Maximum length 12 meters.

For more detailed product information

ProLog 270 x 214 mm

For special projects

When solid durability and a robust appearance are required, the 270-millimeter ProLog is a reliable choice.

Dimensions: 270 x 214 mm, height 204 mm.
Maximum length 12 meters.

For more detailed product information

The non-settling ProLog® provides more freedom in modern and striking design.

“The non-settling ProLog® was a natural choice”

Timo Koljonen, architect

Corner options

Designed for smooth construction.

Modern short corner

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Installation-friendly female-female notch and CLT wedge dowel for joint locking make the installation faster.

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The tightness of the corner is ensured with windproof membrane and batten.

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The corner is finished with two corner boards, resulting in a beautiful and refined final appearance.

Traditional cross corner

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The traditional corner notch is sealed with breathable PP-THERMO insulation tape

NATURALLY STRONG

Carbon-negative
material

ProLog is manufactured in Kuhmo, surrounded by forests. The manufacturing process involves very few logistical transfers and intermediate packaging. Our process consumes minimal energy, and any production waste finds new life as a small building, furniture, or heat source. ProLog is one of the most environmentally friendly building materials, offering 100% Finnish quality.

Assisting in realizing your construction project.

We provide materials tailored to your specifications. Always on time.

Jukka Hyvärinen

Managing Director, Export sales

Annukka Rahikainen

Export sales