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Question DetailsAsked on 5/29/2017

I have a log home and need to know if I can add any Borate type insect control to the shingle oil used as coating

I have boring beetles and need to stop them - they have already compromised two short logs on the sdouth side of my log home - which I have treated with a water based borate solution and stabilized with penatrating epoxy but wish to protect the remaining structure as I coat the logs with shingle ol whch I do most every year. In the past, I have used Penofin but on the South and West sides due to rain and sun (yes we do have sun in Washngton State) it does not hold up past 1 1/2 years. Is there any insect contol that can be added to the oil prior to application.

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Google this search phrase for info on available products - borate insect control additive for log home stain


There are borate additives but I note none from brandname suppliers, leading me to question their effectvieness - and of course yuou would have to test how they work with your finish - might make it gummy or fail to cure or discolor it.


My recommendation would be to use a commercial borate treatment (usually done before assembly of the log home) but you do not have that luxury, so I guess since finishes do not stick well to borate preservatives, a mix-in might be your only recourse. Problem is unless you get 100% penetration of all surfaces, the insects will still get to the wood through cracks and skips in the paint, and I don't know if a borate treatment in the paint will be at all effective. Might kill the one or few who effect the initial entry through the oiled layer, but unless it penetrates well into the wood (which is unlikely since you retreat every year) not enough will ingest the borate to havemuch impact on the colony.


I would talk to a number of log home experts and some pest control companies in your area - my guess is a penetrating pesticide treatment would be your best bet, then find a wood protector to go over that which will stick and not discolor objectionably.


The other possibility - talk to Dow and Olympic and similar paint companies who make specialty bare wood preservatives and paints. I suspect you may be using the wrong product, using shingle oil - hjave never heard of that being used on logs. Dow, Behr, Olympic used to all make Log Oil with insectricide incorporated in it - which is a petroleum based penetrating oil specifically for bare wood construction like log homes, deck tent platforms, picnic tables, etc - I remember it being pretty effective at stopping invasive insects, though it does have a fairly strong lingering smell like cutting oil so more of that might get into the house than you want.

Answered 1 year ago by LCD




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