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What is it?
Scottish larch cladding is a UK grown sustainable timber that has strong qualities that make it perfect as a low carbon choice for cladding. Including:
High resin quantity making it anti-decay and insect proof (the resin is produced by the tree to prevent infections from organisms).
It is considered one of the harder soft woods making it not the most expensive but great value for money and easier to work with.
It is the choice for Scotland builders when choosing timbers so its weather durability is very high.
Aesthetic appeal as the wood if not painted has a golden brown finish that slowly ages to a silver and rustic brown.
Long lifespan for up to 50 years if untreated but longer if coated.
Above is a approximation of cost associated with Scottish Larch and its alternative competitors
Carbon cost
Considerations
Prone to warping and bending since it is a natural material it shrinks over several wet seasons causing a natural effect, may not be desired.
Despite coating sun exposure and wet seasons may discolour certain areas leaving natural marks.
Is not highly flame-retardant and so may not pass high fire safety regulations for public buildings.
Being native to Scotland supply may be thin at times and shortages may occur.
Why should you use it?
Low carbon and locally sourced
Naturally aging aesthetic appeal
Durable and weather resistant
Cost effective and versatile
Low maintenance and long lifespan
Design Considerations
Use eaves and overhangs to deflect rain - or flashing to protect the board tops.
Finish cladding at least 200 mm from the ground or a horizontal surface. Where possible use a surface that diffuses rain, such as gravel.
Board widths should generally be 4 to 6 times board thickness (typically less than 150 mm).
Design detailing must include measures that minimise water penetration.
Sample courtesy by ...........
Sources
What is it section
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://caledoniatimber.co.uk/wp-content/uploads/2024/11/Caledonia-Timber-Scottish-Larch-data-sheet.pdf?utm
https://premierheritageoak.co.uk/learning-centre/the-timeless-beauty-of-oak-0?utm
Carbon table section
Cost table section
https://www.checkatrade.com/blog/cost-guides/house-cladding-cost/
https://spsroofingltd.co.uk/blog/how-much-does-cladding-cost/
Design considerations
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