Bob, Another aid in drying out your area is to
use 110v inferred heat lamp bulbs in a reflective housing. They are available at all hardware stores for under $20 for the whole set-up. In an effort to help, without sounding like too much of a "hick", these were the lamps we used to heat up day old chicks. They can be used to help dry out your area by mounting them about 24" from the area to be dried. (2 feet) Check the area after 10 minutes, and again at 20, to make sure there is not too much heat, but I'm fairly sure it will be OK. Be sure to have enough holes on top to vent out the moisture and cover the top side to prevent new water entering. Allow about 1 foot of air space above the top for air to move around in. If the top has enough vent holes for the moisture to vent out, and the bottom has only a few holes for any puddled water to run out then it should work. I would use as many lights as needed or as many as you can afford. If you cover the top so as not to allow rain water to re-wet the area then 2 lamps should be plenty and one is enough if you move it around and take a week or whatever to dry it out.The repair will not be very good if you do not dry it out. Time is everything when doing this process. 2 to 3 weeks would be great if you keep moving the lights.Good luckRayS/V Speedy