| 摘要 |
A method of the production of a composite roof batten includes forming a substantially rigid low-density lower reinforcing element with cup-shaped depressions defining moisture-passing channels therebetween and providing an upper reinforcing element. The cup-shaped depressions of the lower reinforcing element have introduced therein a low density closed cell foam material and the upper reinforcing element is positioned in overlying relationship to the lower reinforcing element. The foam material is allowed to fill the space defined between the lower reinforcing element and the upper reinforcing element and bond the elements together to form a composite roof batten.
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