The wood siding of the Helsinki Olympic Stadium will be rebuilt by Siparila, a company renowned for its woodworking skills. This national monument of historic value will be restored to its original splendor as closely as possible. The siding will be finished by the end of next year.
In the course of the restoration, the wood siding will be modeled on the original design, except that it will be extended two meters upwards to conceal the new stadium canopies.
Challenges Posed By The Curved Inclined Exterior
Structurally, the now-higher wooden exterior will be implemented using a separate supportive lattice, to which the frame and wood siding will be fixed. The biggest challenge in the project is the complex shape of the exterior, featuring walls that tilt outward.
“No doubt this is the toughest project we’ve ever tackled,” says Chief Sales Officer Olli Prättälä of Siparila, explaining the challenges they’re facing. “Special attention needs to be paid to dimensions and framework details. Even a minor deviation at a single point is multiplied as you proceed outward.”
On-site safety is another challenge because the installations are carried out at elevated levels. Since it’s not possible to construct scaffolding, the installers carry out their work using boom lifts and aerial work platforms. Because of safety considerations, the area underneath the platforms is off-limits for other on-site workers.
Smartly New – With Due Respect For The Old
The wood siding of the Olympic Stadium will be re-created following the original design as closely as possible. At the tendering stage, Siparila supplied a total of nine test walls of different shades and finishes. The test walls were then installed on the south end of the Olympic Stadium and exposed to the elements of weather for two months. These tests proved the finish satisfied the stringent quality requirements. The width of the panels supplied by Siparila was slightly adjusted to match the original.
“It’s fair to say that this was no run-of-the-mill job; it was like walking on eggshells,” Prättälä says. “The project called for true craftsmanship and forward thinking – you need to keep the subsequent work operations in mind all the time, because any errors are multiplied in the course of the work.”
The exterior siding of the Olympic Stadium will consist of Finnish PEFC-certified fine-sawn spruce. The finely textured surface provides better adhesion for paint than an unfinished coarse surface, which gives it enhanced weather resistance in harsh conditions. All in all, the exterior siding covers an area of 9,000 square meters, with the total quantity of spruce reaching 500 cubic meters. Theoretically, the wood siding of the Olympic Stadium will trap up to 500 tonnes of carbon dioxide over its service life. The wood siding panels are finished in an industrial process under controlled conditions. The final coat of paint will be brush-applied to the installed siding next summer, as required by the painting certificate.
Currently, a total of seven professionals are working on the exterior siding. To date, framework construction and external siding have proceeded up to the first corner. When the Helsinki Olympic Stadium is re-opened at the end of 2019, it will look practically the same as it did after the 1952 Olympic Games.
Siparila Exterior Siding: Discover The Beauty Of Nordic Wood Siding
If you’d like Siparila genuine wood siding to enhance the beauty and durability of your commercial or residential project, contact us today to learn more.