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PEFC Certified Multi-Storey Building

Maiha in Seinäjoki is Finland’s first PEFC certified timber block. It is a 5-storey solid wood multi-storey built by Lakea Oy in Seinajoki where the tree is spectacularly presented inside and outside. Maiha is built with Stora Enso’s CLT- space elemental solution and upholstered by Siparila’s TOPCOAT® exterior siding.

Architecture and siding

In Maiha the wood is visible in all parts of the building: outdoors, stairwells and apartments. The block of flats consists of space modules that are made of cross laminated timber (CLT) using space element engineering technology. Maiha’s exterior cladding is made with Siparila’s flame-retardant siding. The color of the facade is inspired by the dark bark. The dark general appearance of the facades is dashed by the red details of the exterior cladding on the surfaces of the individual exterior spaces.

Technical challenges and solution

The exterior siding could not be produced completely painted, because the chosen paint was not suitable for industrial production. When choosing a surface treatment, it is good for the architect to consider the suitability of the surface treatment for industrial production. Completely painted exterior cladding panel saves time and costs during the construction phase – the painting on site is left out and the building can be handed over more quickly.In Maiha the exterior siding was fastened already in the element factory. Because of that siding was fastened by nailing it on the top (nails are visible and need to be painted. If the siding would have been installed on the side, there would not be any need for painting).

siding is ideal material in balconies

Products Used:

Topcoat®-siding UTV 23 x 146 mm, painted

Topcoat®- sidingUTV 23 x 146 mm, fire-retardant

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