Talk:Aerolite (adhesive)

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Strength of adhesive bonded joints in wood

The introduction to this article says: "a properly made Aerolite joint is said to be three times stronger than spruce wood." Who says this? i.e. it is not supported by a citation. Furthermore it is not true, and is a common myth. A good type of structural finger joint using an adhesive such as Aerolite will have an efficiency of around 85% at best. See for example BS 5268 Part 2.

I shall alter the article in a few weeks time if there is not response to this "Talk."

Dendrotek 11:14, 17 November 2012 (UTC)

There's a difference though between "bond" and "joint". Simple long-grain butts with modern adhesives should exceed the strength of typical softwoods (i.e. the timber breaks first). However these are not a useful example of an overall joint. There's also the issue that "efficiency" is based on a usable strength for the purposes of design, with the usual assumptions made about "safety factors" _(sic). That's also a different thing to the actual strength of the joint when tested. Andy Dingley (talk) 13:12, 17 November 2012 (UTC)[reply]