I have two different roofs and questions (Pictures attached) and need help "IDing" a few things.
1) The first is a 60mil TPO roof fully adhered to 2" of ISO. The ISO board is attached to a concrete deck using Olybond Low-Rise Adhesive. The roof is 2-3 years old.
With that in mind my question is, there are lines perfectly spaced across the roof that is just trapping sediment, dirt, etc. Obviously not harming the integrity of the roof system but I cannot figure out what causes those lines.
It isnt the TPO bonding adhesive the lines are to perfect and the bonding adhesive is applied in a random pattern.
It isnt the ISO as they are 4x8 sheets not strips of ISO
It isnt the Olybond somehow becoming visible bc it is applied in a ribbon pattern opposite the direction of the lines that are showing up.
So.. What could it be???
2) The second question is there is a Mod Bit roof that has this reflective/metallic sheeting applied at the edges of the roof, up the curbs, up the parapet walls. I am unfamiliar with this material. Does anyone have experience with this stuff? What purpose is it supposed to be serving, who manufactures it, etc. Not all that common in my area of the country.