What's the difference between Class A Customs TPO roofing. <br>Our TPO is made to tighter tolerances than others. A more uniform thickness in our TPO, We formulate our TPO to more tear resistant. <br><br>We cut our TPO off of the master roll per order so your order is packaged and individually when you order, This prevents additional work when installation time comes as this membrane is only a few days off of the master roll when you receive it. **ITEM SHIPS folding in a box - it is recommend that you remove it from the box as soon as you receive it. Lay it flat and allow it to "relax" for several hours (preferably in warm sun) before installing, this will allow the temporary creases that may have been caused by folding to come out as the item "rests". <br><br>Does not chalk (won't turn side of unit gray) *Stronger - won't puncture as easily. *Better traction with a non-skid surface *Color is same throughout substrate *Will not shrink or crack (100% solids sealant) *.028 Thick<br><br><br>The glue/adhesive, and caulk that come in this kit is specially made for use with our rubber membrane. Our glue has 60% stronger adhesion properties than others out there.