Have another read of the first page IMB, you should still definitely use at least one layer of vac seal, only the final layer needs to be non permeable. Either that or use the Moisture Barrier Bags (MBB). Some prices are listed on the first page of this thread too: http://www.qsource.com/s-40-3m-scc-dri-shield-3000-moisture-barrier-bags.aspx (large bags $100 - 100 pack) You can cut/seal 2 or three small bags fr om each large bag. http://www.qsource.com/s-39-3m-scc-dri-shield-2000-moisture-barrier-bags.aspx (the 3.6 mil bags are OK, cheaper, smaller, $13 per hundred) Very affordable!!