1 â¢ Print, sign and date the two-page Certification. Statement and mail it along with all requested. supporting documentation to the Medicare. contractor. 2  Note: 3  Do not mail the CMS-855 paper that can. be printed from Internet-based PECOS.  Retain this information for your records.
Definition of mastic. 1 : an aromatic resinous exudate from mastic trees used chiefly in varnishes.
Tile mastic, or thinset, is a premixed adhesive that is easy to use right out of the can, and it bonds well to almost any surface. It is commonly used directly on plywood or on cement board. Cement board is a highly stable, cement-based, sheet material typically reinforced with fiberglass (Image 1).