thar was VERY helpful,,,never heard of that product.
On a related note the last time I did roofs back in the 80's I used all new vent flashings etc. NOW those rubber components are in appalling condition,,,obviously failed and leaked long before the roof did. Would it hurt or help to put tin flashings above the rubber part,,,much like an umbrella to keep direct sun off the rubber??? Or would that cook the rubber even faster,,like sticking them in a constant tin oven???
If it matters,,location is northern Nebraska,,winter lows of 20-30 below with -80 wind chills and summers heat of 95 to 105 regularly. Dont really know why we live here some days.