Skammi House is a one-family residence in Jyväskylä, Central Finland, where the National Housing Fair, which is annually organised in a different city, took place in the summer of 2014. A total of 37 small houses were built on the exhibition grounds, and Skammi House was the showpiece of the eponymous architect’s office for the event.

Project details

Project Skammi House in Jyväskylä, Finland 
Client Satu Ratinen and Markku Sonninen
Architects Satu Ratinen and Markku Sonninen
Roof tiles Koramic Datura black matt glazed
Floor area 196 m²

Skammi House in Jyväskylä, Finland

Skammi House in Jyväskylä, Finland

Skammi House in Jyväskylä, Finland

Skammi House in Jyväskylä, Finland

Skammi House in Jyväskylä, Finland

Skammi House in Jyväskylä, Finland

Skammi House in Jyväskylä, Finland

Skammi House in Jyväskylä, Finland

The products

The regional plan allowed plenty of freedom regarding ideas for the buildings‘ mass and materials. Town planners had, however, specified that façades in the block where the Skammi House is situated had to be black. In the conceptual design phase, the designers intended to create a façade with traditional bricks. Wienerberger’s product range, however, offered an interesting alternative: to cover the façade with ceramic roof tiles would give the house a completely new, more distinctive character. The architects did, in fact, select a straight, black matt glazed roof tile, Koramic Datura, which features a calm, dimensionally delicate shape.
 

Façade solution brought practical beneftis

The chosen product offers many superior technical advantages for this house in particular. Since foundation conditions posed a challenge, the tiles were hung, which did not require as wide a foundation as with a façade built of bricks. Moreover, the ceramic roof tiles could be installed in the cold of November thanks to their mechanical fixing method. The largest façade surface faces the street in the south-east where there are no trees to shadow the house. “Since dark façade materials are very exposed to volatile weather, ceramic roof tiles were a natural choice due to their excellent durability”, says architect Markku Sonninen.

Vibrant, energy-efficient tile face

Rainwater flows down the roof tiles instead of being absorbed by the façade; this was seen as another benefit of the material choice. The tiled wall actually behaves like a raised roof. A ventilation channel behind the tiling shall insulates the house from excessive heat during the hottest summer days. Matt glaze is resistant to mechanical wear and creates an interesting shine on the surface.
“A black wall is not always black but sometimes, like at sunset, orange and pink, and in the winter, it is sometimes beautifully white when covered with frost”, depicts Sonninen.
This façade solution, unique and unforeseen in the Finnish market, turned out to be a success during the Housing Fair. This material combined with the shape of the house provoked people to express various associations from liquorice or mailboxes to traditional grey shingle church roofs. Having been used as an ordinary family home since the end of trade fair, the Skammi House has exceeded the expectations on practicality as well as homely atmosphere.

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