Falling insulation is FAILING insulation. The reason it is failing is due to the excessive moisture in the crawlspace. This is also one of the early signs that rot and mold may be starting to grow in your crawlspace. Replacing the insulation is not the answer to the problem, the insulation will fall down again as soon as it becomes heavy from the moisture. The answer is to eliminate or significantly reduce the moisture in the crawlspace. For more information on properly eliminating crawlspace problems, give us a call or use the contact us link here.