We've ran quite a few loads of caps and staples through it since i bought it and so far I love the thing. Has'nt given us a bit of troubles and holds stuff down great!! We've had off and on rain lately so I've switched over completely to synthetic underlayment-Typar brand- since I never know wtf mother nature is gonna do from hour to hour. We've also had pretty steady high winds (10-30mph) and I've yet to have any troubles with this new combination of synthetic and plasti caps. I nail the over laps every 24" or so for good measure and this typar is 5' wide so I install 4 plasti caps from top to bottom every 3' or so roughly. Probably way overkill, but I never know what the weather is gonna do and neither does the weather man
Worked great on Tyvek also, holds much better than hammer staples though not as lightning fast, I do not have to worry about blow off's, ever, with these plasti caps-extreme holding power.
Just wished the capacity was larger since it will only hold 200 at a time of both staples and plastic caps, but loading is fast so I dont think too much of it really.
Getting more exposure with the synthetic underlayment (used about 5 rolls to date or 500sq of it), definately a different beast. Just like buidling wrap you have to "pull" it taunt prior to stapling down, and even then when the sun shines on it, it like to expand and wrinkle a bit. The last garage we did last week there were a few wrinkle I was questioning since they seemed big, but wanted to lay some shinlges to test it and as luck would have it no matter how big the wrinkle it never showed through, very forgiving in that aspect.
Best part is now that we're in the dewy season, it actually pulls itself taunter overnight and gets tackier with moisture. I hate being on roofs and have only started pushing them since adding man power and keeping more work in house, and am always leary when walking on stapled felt paper since i fear it will rip and away I'll go....been there done that personally and on that same roof the other guy slide down prior to me falling due to tearing, let's just say we left after I fell and punched a second hole in the sheeting with my hammer to keep from going over and comtinued the next morning LOL!!