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WeatherMaster Tile Seal
 Description
WeatherMasterTM AC TileSeal is a proprietary, patented underlayment, uniquely designed for use under tile, slate or metal roofing systems. WeatherMasterTM AC TileSeal consists of a proprietary modified asphalt and a woven polyester. The woven polyester top surface aggressively bonds with foam adhesives used in tile installation and can withstand stacked tiles without slippage or damage to the membrane surface. It also provides traction for roofers during installation of the primary roofing system. WeatherMasterTM AC TileSeal is a self adhesive tile underlayment. No special adhesives, heat or equipment are necessary during installation above 45ºF. WeatherMasterTM AC TileSeal is available in rolls of 200 sq. ft. (18.6 sq. m.), 3’ x 66.6’ (0.9m x 20.3m).
 WeatherMaster Tile Seal Technical Data |
WeatherMasterTM AC TileSeal is an innovative, patented underlayment for use beneath tile, slate and metal roofing. WeatherMasterTM AC TileSeal protects against wind driven rain by bonding to the roof deck and sealing around fastener penetrations. WeatherMasterTM AC TileSeal can withstand roof temperatures of up to 260°F (126°C) and can be left exposed for a maximum of 180 days.
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General Instructions
For Roof Decks (Rakes and Eaves)
To begin, remove any dust, dirt, loose nails or other protrusions from the deck of new roofs. Remove all shingles, roofing felt and nails from the deck of existing roofs. Sweep thoroughly to remove any dust and dirt. Apply AC TileSeal Underlayment only in fair weather when air surface temperatures are above 45°F. Apply sheet parallel and flush to the eave edge. Overlap horizontal laps 4" so that laps will shed water. End laps should be overlapped 6" and staggered. On steep slope applications it may be necessary to spot nail the top edge of the membrane temporarily during the installation process. For wrinkle-free application, cut AC TileSeal Underlayment into 10- to 15-foot lengths and reroll. Peel back 1 to 2 feet of release paper. Align the sheet on the lower eave edge of the roof and adhere the first 1 to 2 feet. Pull the release paper from under the sheet and continue to peel it while pressing the sheet into place. Roll lower edges firmly with a wallpaper roller or other hand roller. For ice dam protection, AC TileSeal Underlayment must be applied to reach a point above the highest expected level of ice dams (minimum application at least to a height of 24" beyond the interior wall line). Apply asphalt cement in a 1" line top to bottom on all overlaps.
 Complete Instructions
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Pallets of AC TileSeal Underlayment shall not be double stacked. Provide cover on top and sides, allowing for adequate ventilation below the pallet. Consult the Material Safety Data Sheet for best available information on the safe handling, storage, personal protection, health and environmental considerations.
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- Underwriters Laboratories Class A and Class C Fire Rating – Based on Roof Covering
- ASTM D 1970 Standard Ice Dam Underlayment
- Uniform Building Code Nos. 32B-1, 32B-2, 32D-1 and 31D-2
Spec this Product
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Features & Benefits Passes Dade County TAS 103 Test of 10 Stacked Tiles
Superior Slip Resistant Surface
Excellent Adhesion Surface for Tile Foams
Exceptionally Stable Under High Heat
No Special Adhesives
Miami-Dade NOA #03-0716.01
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