Originally Posted by
quilt1950
I've never tested this, but I've been told that the sewing holes will close up when the PULS goes thru the dryer, thereby making it waterproof.
Thanks Tartan & quilt 1950 for posting your comments. Didn't know this feature about PUL & thought that it would leak like other plasticized fabrics. I did some research and found out a couple of things. The bottom line is that not all PUL fabric is created equal. You need to know the name of the mfg and check their site to see if/how you can seal it. Some you seal once in a hot dryer for x number of minutes, some you need to do this every so often and others you can't put in a hot dryer at all, so it really doesn't seal. I guess check before you purchase. I'm interested because I'd like to make a waterproof picnic quilt but have been stuck on how to keep the damp out.