The clients selected SILVALarch™ Siberian Larch channel weatherboard cladding for their new sustainable home at Killibury near Wadebridge with the aim of achieving the Passive House Standard.
The building plot was originally home to an old bungalow that ran alongside an Iron Age fort and, being located in an area of natural beauty, the planning application brought many challenges, including the preservation of the local bat population.
Having demolished the old bungalow, the clients were keen to create a modern, sustainable house combining the functionality of prefabricated insulated concrete panels with the beauty of Siberian Larch channel weatherboard cladding. The contrast between the light of the concrete and the dark of the wood (which was factory-coated in Sansin SDF Onyx) adds an interesting dimension to the exterior of the building.
Passive House Standard
To achieve Passive House Standard the building had to be energy-efficient, comfortable, affordable and ecological all at the same time. The Passive House Standard requires that dwellings be constructed according to 5 key areas of the build process:
- Triple-glazed windows and insulated frames must be fitted to the property.
- Thermal insulation: all opaque surfaces must be sufficiently well-insulated to keep warmth in during the winter and heat out during the summer.
- Ventilation: a ventilation system that circulates fresh air through the property, ensuring it remains at room temperature.
- Airtightness: Passive houses should have a continuous airtight outer shell.
- Thermal bridging is eliminated or minimised where thermal bridging is unavoidable.
The client initially met the Silva Timber team at the Futurebuild exhibition in March 2019. Originally keen on the charred timber look, John was thrilled to explore Silva’s factory-coating service which could offer him a similar look at a fraction of the cost. John visited Silva’s showroom, obtained samples, and placed his order within a matter of weeks.
On dealing with Silva Timber, Janie commented, “We are very happy with the finished look and quality of the Silva products. The Silva Timber team were super easy to deal with, helpful and efficient.”
SILVALarch Channel Weatherboard cladding has a tongue-and-groove style fitment which creates bold shadow lines in the recess. Its insulation value is approximately 15 times better than masonry, 400 times better than steel, and 1770 times better than aluminium, making it the perfect material to assist in achieving Passive House Standards.
Photography by Janie Airey.