Other Wood Preservatives Flashcards

1
Q

Name four wood preservatives (besides borates)

A

Pine tar, copper, zinc, and mercury-based preservatives

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2
Q

How was pine tar prepared?

A

Usually thinned with oil like linseed, applied hot for better wood absorption

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3
Q

Pros of pine tar?

A

Good water repellant coating, breathable enough to keep moisture from being trapped in the wood

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4
Q

What parts had pine tar applied to?

A

Wood shingle roofs and siding

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5
Q

Pros of copper-based napthenate?

A

water-repellant preservative that reduces checking, splitting, and warping in pressure-treated wood

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6
Q

What are the two most common kinds of copper-based napthenate?

A

oil-based and water based; water-based contains less copper and doesn’t penetrate into seasoned wood as well (more common)

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