cdale71 14 Report post Posted July 19, 2008 Hi! this is my 1st post although i have been reading and hopefully becoming more educated about wood care. we have a 18 year old all rough sawn cedar house. we unfortunately applied flood cwf uv over the years{big mistake}and the majority of the house stripped and brightened for a new finish! I'm wondering if any of you pros reading this, have a opinion about twp 100 vs twp 500 regarding performance and longevity differences. any and all opinions would be greatly appreciated!!! thanks again! curt Share this post Link to post Share on other sites
plainpainter 217 Report post Posted July 19, 2008 500 is larger than 100 - so twp 500 is obviously better. Share this post Link to post Share on other sites
bigchaz 157 Report post Posted July 19, 2008 500 is the low VOC form of twp. 100 is the original but from what I understand it wont be around as we know it in the next year or so. At least on decks I think most people stick with the 100 series. Not sure what would be best for siding Share this post Link to post Share on other sites
