Log Types for your home from Finland
Logs are traditional construction materials made of solid wood.
The logs selected for construction purposes are straight and of good quality throughout. Regardless of the log type, grooves are cut into the logs to allow them to be stacked on top of each other and to connect the walls at the corners.
The three different log types we manufacture combined with the large selection of different sizes give our customers a wide choice of solutions to best suit their taste and to best compliment the build.
All of our three log types are made of slow-growing densely fibrous pine, rich in heartwood, harvested from the unspoilt forests of Kainuu in north-eastern Finland.
Before manufacturing the logs, the timber is allowed to dry in order to minimise the natural expansion and shrinking of wood later on. Any pests and their larvae that may be living in the wood will also perish during the drying process, and once dried, wood no longer offers favourable conditions for any pests found in Finland.
Round logs (Ø150, 170, 190, 210, 230, 250, 270 and 290 mm)
+ Round logs are traditional.
+ Round logs blend in harmoniously with natural landscapes and are therefore ideal for holiday homes.
+ Round logs are available in a wide range of sizes, which enables relatively thick solid wall structures.
+ Round logs are relatively inexpensive considering their size.
– Round logs are susceptible to cracking, which can sometimes be severe.
– Compared to square logs, round logs take up more space during transportation.
– Assembly requires special expertise, and solid round logs are heavy to move around on site.
– When designing the roof structure, the best option is to make the eaves as long as possible to protect the walls from the effects of the weather but also to choose a heavy roofing material (usually tiles) to facilitate the natural process of settling.
Laminated round log
A laminated round log glued together from four or more layers (Ø 230, 245 and 270 mm)
+ the logs will not split
+ with a special tight-fitting corner structure, very tight structures are possible
+ precise installation
+ minimal settling
+ extremely finished look
– more expensive than massive round logs
To complement our traditional round log corner structure, we have developed a completely new kind of extremely tight-fitting corner solution. We have specially designed custom-build machines for making extra-tight corners.
The tight corner can be used with both massive and laminated round logs when the log diameter is 230 mm or greater.
Solid heart split square logs
Solid heart split square logs (70x170 mm and 95x170 mm)
+ The logs are cut through the centre of the heartwood, which minimises cracking on the logs’ surface.
+ Square logs are especially well suited for builds where an additional layer of insulation is used on the external walls or where an especially energy-efficient double log structure is used.
+ Square logs fit in well with urban environment ( normal log crossings in the corners can be substituted with dovetail corners).
+ The double tongue-and-groove structure makes the logs fit tightly together.
+ Compared to round logs, square logs take up less space during transportation and are easier to assemble.
+ Square logs are more affordable than laminated logs although almost equal in terms of surface cracking
– The range of different sizes is limited due to the restricted maximum size of the logs.
– Changes in moisture levels during the time between manufacture and assembly may cause the logs to bend longitudinally.
Glue-laminated square logs (two or more planed layers of wood glued together)
(92×170 mm, 115×170 mm, 134×170 mm, 180×218 mm, 204×270 mm, 240×218 mm, 240×270 mm, 270×218 mm)
+ Cracking on the surface is minimal.
+ The logs do not bend even longitudinally.
+ Similarly to solid square logs, laminated logs fit in well with urban settings.
+ Laminated logs are available in more sizes than heart split square logs , which allows for conformance with local thermal insulation requirements without the need for additional insulation.
+ The finished wall structure is compact and less susceptible to settling.
+ Similarly to solid square logs, laminated logs are easy to assemble and transport.
– Similarly to solid round logs, larger sizes of laminated logs are heavy to move around on site.
– Due to the complicated manufacturing process, laminated logs are more expensive than solid square logs and round logs.
Vertical log glued together from five layers (93x220 mm)
+ structure that does not settle
+ enables versatile architecture
+ easier and quicker to erect than a traditional log frame
– requires extra insulation on the outside as well as external cladding