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Old 03-26-2013
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P31-2 Plywood In Cored Deck?

We cut open the deck under the anchor cleat to investigate high moisture readings and to our surprise found plywood. There was lots of moisture but no delamination.

Two notes.

1. If Pearson added plywood to reinforce the cleat, they did a poor job. Only two of the four anchor bolts are in plywood. The other two are in balsa.

2. In the photo, you can see the border between the end grain balsa and the plywood. While the plywood is wet and rotted, the balsa right next to it seems relatively dry and intact.

It would be nice to know how much deck I will have to cut to remove this piece of plywood. The edge we exposed is very wet and rotted, and we assume because the grain runs horizontally, the entire piece is wet.

Does anyone have information on Pearson construction techniques circa 1987?

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