Circuitus 2.0 passive house in Stommen, Sweden

Designs for series production can still be mould-breaking

As part of the Circuitus 2.0 pilot project, a single occupancy house to passive house standards has been developed for series construction in Sweden. This state-of-the-art passive house combines a ‘circular economy’ approach with demanding requirements in terms of comfort, quality and efficiency. The ecological footprint of these houses has been kept to a minimum during fabrication and construction and also over the entire service life of the buildings. Sustainable solutions and materials characterise the Circuitus 2.0 project, which is recyclable to a significant extent.

pro clima products were used in the airtightness layer on the walls and window joints, and for weather protection under roof covering.

  • Year of construction: 2020

  • Location: Vikensved, Växjö municipality, Sweden

  • Architect: Horisont Arkitekter

  • Construction method: Timber structure

  • House type: Prefabricated house / passive house

  • Construction contractor: Circuitus AB

Circuitus 2.0 is a construction concept with a range of house models that have minimal environmental impact and, at the same time, offer maximum comfort combined with low energy consumption.

The house has an estimated heating requirement of 15 kWh/(m² a), which corresponds to 1665 kWh per annum for heating. It is predicted that the solar cells mounted on the roof will generate 5000 kWh/a of electricity.

The Circuitus building shell consists of a series of laminated timber elements that are prefabricated. In this way, installation times on site are reduced considerably.

The construction system is flexible and consists of a number of modules. As a result, the floor area can be expanded as required or adjoining structures such as a conservatory can be added.

Impressions of the interior fittings and furnishings.

Floor plan

With its modular structure, each house can have either one or two storey, with a compact, energy-efficient floor plan.

How was this project implemented?

Airtightness of interior walls and base joints:

Large windows let in lots of natural sunlight and create bright, inviting spaces.

TESCON PRIMER RP for pretreatment of the floor slab

Airtight sealing of the transition to the floor slab with TESCON VANA

Airtight taping of joints between plywood boards with TESCON VANA

Roof structure:

SOLITEX MENTO ULTRA connect, our reinforced roofing underlay with self-adhesive strips, has extremely good tear-resistance and is suitable for severe and particularly demanding weather conditions.

Detail solutions for window joints:

SOLITEX FRONTA WA was used for the joint between the window frame and the protruding window box

Further information on this project can be found at (in Swedish only)

The following pro clima products were used in this project:



Reinforced high tear-resistance roofing underlay, with self-adhesive strips