twp 100 vs twp 500

[cdale71]

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

[plainpainter]

500 is larger than 100 - so twp 500 is obviously better.

[bigchaz]

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