Originally Posted by jagans
Question 1: What type of modified Bitumen is it Atactic Polypropylene (APP, plastic modified), or Styrene Butadiene Styrene (SBS Rubber Modified)
Question 2: Why didnt the roofer add slope to get the water off the roof? No Mod bit does well if ponded.
Question 3: Is it a two ply mod bit? Mod bit should ALWAYS BE MUTI-PLY
Recommendation 1: Do not coat it until it goes through a snow melt or two, so it is under hydraulic pressure. You may have voids that wont show up till then, and it is easier to patch without coating. APP produces what is called tobacco juicing, and this will delaminate coating. It is really plasticizer oil loss, but that's what they call it.
1. Not sure??? I know the roofer, so I can find out.
2. There is a slight slope, maybe I didn't describe it well, but it's enough to shed water well, I can see this roof from upstairs window and no ponding
3. Again, not sure. I do know that I helped him carry some rolls up and they were very heavy and they were torched down, if that helps
Thanks for the advice! I guess I will wait for spring/summer for any coating