Specifically designed as the base ply of PMMA liquid-applied roofing and waterproofing systems, Pro Base series sheets are high-performance SBS-modified bitumen base plies for use with Siplast’s Parapro and Paraflex Membrane Systems. The unique top surface is factory coated with a proprietary Syntan® acrylic coating. The back surface is coated with a self-adhesive bitumen layer specifically formulated for optimum adhesion in low-slope membrane applications, and is lined with a high strength polyolefin release film.

Approved for a maximum 14 days of exposure prior to application of Parapro or Paraflex materials.
Available with Siplast RoofTag RFID.

Pro Base SA

Consists of a lightweight random fibrous glass mat impregnated and coated with high-quality SBS-modified bitumen. Designed for direct application to approved insulations and roof boards, primed structural concrete decks, and other approved substrates.

Pro Base TS SA

Consists of a lightweight random fibrous glass mat impregnated and coated with an elastomeric SBS-modified bitumen. Designed for direct application to approved insulations, DensDeck Prime®, primed structural concrete decks, and other approved substrates.

About Pro Base SA Series

Pro Base SA and TS SA are high-performance self-adhesive SBS-modified bitumen base plies specifically designed for use in Parapro and Paraflex Membrane Systems. The unique top surface is factory coated with a proprietary Syntan^® acrylic coating.

Pro Base SA

Standards: ASTM D6163 Type I, Grade S
Selvage Surfacing: Polyolefin Release Tape
Top Surfacing: Syntan Acrylic Coating
Back Surfacing: Polyolefin Release Film

Pro Base TS SA

Standards: ASTM D6163 Type I, Grade S
Selvage Surfacing: Polyolefin Release Tape
Top Surfacing: Syntan Acrylic Coating
Back Surfacing: Adhesive Stripes, Syntan Acrylic Coating between the Stripes, Polyolefin Release Film

Installation

Application

Refer to the applicable Siplast Technical Guide for detailed application information and slope limitations. Pro Base SA and TS SA are lapped 3 inches (76 mm) side and end.

Storage and Handling

All Siplast roll roofing products should be stored on end on a clean, flat surface. Rolls should not be dropped on ends or edges or stored in a leaning position. Deformation resulting from these actions will make proper installation difficult. All roofing products should be stored in a dry place out of direct exposure to the elements and should not be double stacked. Material should be handled so that it remains dry prior to and during installation.

See product packaging and the Safety Data Sheet for specific information on the safe handling of these products.

Packaging

Pallet: 41 in x 48 in (104 cm x 122 cm) wooden pallet
Rolls Per Pallet: 25
Pallets Per Truckload:

Pro Base TS SA: 20
Pro Base SA: 18

Minimum Roll Weight:

Pro Base TS SA: 73 lb (33.1 kg)
Pro Base SA: 69 lb (31.5 kg)

Liquid efficiency. Siplast standards.

Parapro Roof Membrane Resin is a multi-component, fast-curing, flexible PMMA resin used as a finish ply in Parapro Roof Membrane Systems. Parapro Roof Membrane Resin, when catalyzed, is combined with Pro Fleece to form a monolithic, reinforced roof membrane system. The Parapro Roof Membrane System is designed for exposed roofing and waterproofing applications not subject to pedestrian or vehicular traffic.

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