Eureka? Could I have found someone with the solution to a perennial problem – how to preserve wood in an eco-friendly way? As I wrote in my blog on paint for bee hives the natural order of things is for wood to decompose, so stopping that process has involved toxic substances.
Canadian company Vahalla Wood Preservatives Ltd say:
“We believe it works by altering the free hydroxyls within the wood into acetyl groups making the wood no longer digestible by enzymes and hugely reducing the ability of the wood to absorb water.”
Other than that all we know is it is acidic, and is “made up of naturally occurring plant and mineral substances, combined in a special family recipe.”
Here’s who has been using it:
Parks Canada has used it in Banff, Kootenay and Yoho National Parks.
The British Columbia Ministry of Transportation has approved its use for municipal and highway sign projects.
The City of Calgary is using it treating wooden roadside sound barrier fencing.
Nova Scotia Natural Resources is testing the product on picnic tables
And several construction contractors and log home builders are using it Canada and the U.S.
So I am going to try it on my garden shed, what have I got to lose? £14.95. Which is roughly comparable to other non-eco products but this will only need one application. No repainting it on in 4 years or ever again.
It is called Lifetime™ Wood Treatment and is available in the UK from The Natural Gardener.
See http://www.valhalco.com/wood-stain-questions.php for experimental findings to support the claims.