Our research began with an investigation into three different prefab systems that we found to be unique and innovative from a bio-material and prefab perspective. Through the act of making and prototyping, we attempted to better understand the benefits and challenges associated with each cassette as a means to develop a framework for future explorations. The three systems selected are described below. The first being 1) WikiHouse: a net-zero, structural framing system made of modular timber blocks developed in the UK by Open Systems Lab. The second was 2) Ecococon: a company based in Lithuania that manufactures prefabricated straw/ timber panels, and finally 3) Natural Building Systems: a company out of the UK that focuses on low carbon modular construction through a HempLime and timber cassette.
What is WikHouse?
WikiHouse is a net-zero, structural framing system made of modular timber blocks developed in the UK by Open Systems Lab. The Skylark blocks consist of cassettes made of CNC-cut plywood or OSB sheets and timber connections that are filled with insulation. Available in two different cassette sizes, the Skylark200 is a thinner and lighter series that can be used for smaller structures, whereas the Skylark250 series allows for more insulation and structural performance for larger 1-2 storey structures.
Why WikiHouse?
WikiHouse provides an open-source platform for building, meaning all files are publicly available. This allows local CNC fabricators to develop Wikihouses across the globe. Its platform is built on sustainable, low-waste, and zero-carbon materials construction methods.
How does it work?
WikiHouse is built with blocks. Blocks or cassettes are precisely manufactured, lightweight, structurally rigid and durable, making them a noteworthy solution for new small-scale residential housing or additional projects. Cassettes interlock with each other using bowtie timber connections to quickly assemble and disassemble at the end of a building’s lifetime. Fill it up with your favourite bio-based insulation and clad it as you would a typical residential assembly.
Check out our WikiHouse Prototype 1:1
We built it - and it works! Utilizing our own CNC and local OSB, it’s nailed together and packed with both carbon-negative hemp fiber batt and cellulose insulation. An additional layer of continuous outboard wood fiberboard insulation is used along with traditional air barriers and cladding materials.
Cost: Wall Assembly: $1,833 / 10 m2 (CAD)
Embodied Carbon: Wall Assembly: -38kgCO23 / 10 m2
Thermal Performance: Wall Assembly: R-33.0
