
Ply Sheet TA 87
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Ply Sheet TA 87 is a 87 mil (2.2 mm) thick torch applied SBS modified bitumen fiberglass reinforced ply sheet for use within Sarnafil® hybrid roofing systems. Ply Sheet TA 87 can also be used as a vapor retarder in Sarnafil® and Sikaplan® insulated roofing systems. It can be left exposed for up to six (6) months.
- Torch application allows for installation without low temperature restrictions
- Fiberglass reinforcement provides dimensional stability
- Fine mineral aggregate (sand) topside accepts approved urethane adhesives for membrane attachment
- Weathering surface allows for exposure for up to six (6) months
Usage
- Ply sheet within Sarnafil hybrid roofing systems
- Vapor retarder within Sarnafil and Sikaplan insulated roofing systems
- Sarnafil hybrid roofing systems
- Direct application to structural concrete deck and approved primed gypsum boards
Advantages
- Torch application allows for installation without low temperature restrictions
- Fiberglass reinforcement provides dimensional stability
- Fine mineral aggregate (sand) topside accepts approved urethane adhesives for membrane attachment
- Weathering surface allows for exposure for up to six (6) months
Packaging
39.4" (1 m) x 49.2 ft (15 m) roll,
95 lbs (43.1 kg) per roll, 30 rolls per pallet
Product Details
APPROVALS / STANDARDS
- FM Global
- Underwriters Laboratories
- Florida Building Code
- Meets ASTM D6163, Type I, Grade S
- Tested according to ASTM E108
- Tested according to ANSI/FM 4474 for wind uplift
- Tested according to Miami-Dade TAS 114 for wind uplift
Chemical Base
SBS polymer modified bitumen with a fiberglass mat reinforcement and fine mineral aggregate (sand) topside and polyolefin burn-off film underside
Shelf Life
N/A
Storage Conditions
Store rolls on end and maintain in an upright position to prevent damage. Store rolls in a clean dry location and cover as necessary to protect rolls from environmental damage such as extreme cold, heat, or moisture.
Thickness
87 mil (2.2 mm) | (ASTM D-5147) |
Mass per Unit Area
62.6 lb/100ft2 (3054 g/m2) | (ASTM D-5147) |
Tensile Strength
Peak Load @ 0°F (-18°C)
Machine Direction | Cross Machine Direction |
100 lbf/in (17.5 kN/m) | 90 lbf/in (15.8 kN/m) |
Peak Load @ 73.4°F (23°C)
Machine Direction | Cross Machine Direction |
50 lbf/in (8.8 kN/m) | 40 lbf/in (7.0 kN/m) |
Elongation
Elongation at Peak Load @ 0°F (-18°C)
Machine Direction | Cross Machine Direction |
4% | 4% |
Elongation at Peak Load @ 73.4°F (23°C)
Machine Direction | Cross Machine Direction |
5% | 4% |
Ultimate Elongation @ 73.4°F (23°C)
Machine Direction | Cross Machine Direction |
45% | 45% |
Dimensional Stability
Machine Direction | Cross Machine Direction |
< 0.1% | < 0.1% |
Tear Strength
Machine Direction | Cross Machine Direction |
60 lbf (267 N) | 60 lbf (267 N) |
Low Temperature Bend
Machine Direction | Cross Machine Direction |
-15°F (-26°C) | -15°F (-26°C) |
Service Temperature
Compound Stability
Machine Direction | Cross Machine Direction |
250°F (121°C) | 250°F (121°C) |
Application
SUBSTRATE PREPARATION
All surfaces must be clean, sound, dry, and free of loose materials or contaminants such as water, frost, ice, oil and grease that would interfere with proper adhesion and compromise the performance of the product.
In accordance with the ICRI Technical Guideline No. 310.2R-2013, newly poured concrete surfaces must be finished by forming, wood float, steel or power trowel, or broom finished to meet the equivalency of a CSP type surface between a rating of 2 – 5.
Application to structural concrete surfaces and approved primed gypsum board require priming with Vapor Retarder Primer TA or Vapor Retarder Primer BE. See Vapor Retarder Primer TA or Vapor Retarder Primer BE product data sheet for additional information.
APPLICATION
Torch applied products should only be installed by trained personnel. It is imperative that the NRCA safety guidelines, as outlined in their Certified Roofing Torch Applicator Program (CERTA), and good industry practices be followed.
Chalk a line on the deck to align the first sheet. Unroll Ply Sheet TA 87 and allow the sheet to relax. Align the side lap with the chalk line. Back roll the sheet halfway. Begin torching the bottom side of Ply Sheet TA 87. As the bitumen begins to soften pull the roll forward with a metal pole.
When heated properly there should be a bleed out of approximately ½" (1.3 cm). Back roll the other half of the roll and repeat the process.
Kick out the next roll and align the side lap. Side laps must be a minimum of 3" (7.6 cm). End laps should be a minimum of 6" (15.2 cm). Stagger adjacent end laps a minimum of 12" (30.5 cm). Cut the lower outside corner of the end lap at a 45° angle to minimize material build-up where it will be covered by the next roll.
When heating the membrane move the torch in an ‘L’ pattern to ensure heating of the lap area on the bottom sheet. Proper heating will create approximately a ½" (1.3 cm) bleed out. Walk in the seam area or use a weighted roller to ensure proper adhesion and bleed out. Ensure that all laps are firmly and smoothly adhered without wrinkles, voids or fishmouths.
Check the seams with the edge of a trowel. Any loose areas should be lifted with the trowel, reheated and pushed back down to achieve the necessary bleed out.
Apply Sika’s Mastic to seal around penetrations. Use a trowel to mound Sika’s Mastic around the penetrations to seal the opening. Do not apply Sika’s Mastic where it may come into direct contact with the Sarnafil® or Sikaplan® membrane.