Question

probing the ends of beams with a screwdriver is a good way to check for rot end bearing sag pressure treated wood rotation question 40 skirting is found on decks but not porches is usually metal can obstruct ventilation should not have an access door should extend down into the soil

Explanation:

Probing beam - ends with a screwdriver can detect soft, rotted wood. Skirting, often around structures like decks or porches, can block air - flow if not designed properly.

Answer:

1. rot
2. can obstruct ventilation