May 4, 2010. Agency FOIA professionals typically find that working collaboratively and sharing experiences with fellow access professionals can be quite beneficial. To facilitate the exchange of ideas and information between agencies, OIP is convening two FOIA Working Groups. As agencies enter into their second year of work in improving the administration of the FOIA in accordance with the President's Memorandum on the FOIA and the Attorney General's FOIA Guidelines, this is an appropriate time for agencies to build on the successes of one another.
In a concerted effort to learn more. about the weathering characteristics. of TPO (thermoplastic polyolefin) sin -. gle ply roof membranes, WSRCA. began an in situ testing program dur -. ing the year 2000.
EPDM ROOFING VS PVC ROOFING. What is an EPDM rubber roof? An EPDM rubber roof is the most popular and economical single-ply roofing membrane that has been in wide use for over 40 years. EPDM (ethylene propylene diene monomer) is a type of synthetic rubber. This rubber is made up mostly of oil (carbo-hydrate) based by-products with modifiers and stabilizers added to extend its service life. An adhesive is used to glue the roof to the roof deck and special tape is used to seal the seams.