We just had ours done this summer in Mesa,Az. at APR RV. It’s not cheap....but we think it was worth the cost, if you want a superior roof and will keep the unit a long time. I’ll let you know in about 20 years. Michael (APR RV) was great to work with. He can also help you get your dual pane windows repaired if they’ve lost their seal. My only possible negative comment....if it is snow covered, “it is slick as owl snot on a door knob”! ;) Getting on top to clear snow... will age you rapidly. Or possibly stop the aging process! :B