Product Description
PERM-A-BARRIER® HRA CAP is a polyester reinforced SBS membrane designed for use as the top ply on wall and base flashings for hot rubberized asphalt waterproofing systems. It may also be used as the top surfacing in the field if a hot rubberized asphalt system is to be left exposed.
For other HRA system products see the individual product data sheets
Product Details
PERM-A-BARRIER HRA CAP is manufactured on state-of-the-art, dedicated lines that were exclusively designed to produce modified bitumen products. PERM-A-BARRIER HRA CAP is constructed with a high-performance, stress-resistant polyester mat that is impregnated and coated with a superior SBS-modified bitumen compound. It is surfaced with ceramic granules on the top side which protects the membrane from abuse and UV degradation.
| Roll Dimensions | 39⅜" X 32’10" |
| Nominal Coverage | One square |
| Approximate Weight | 93 lbs. per roll |
| Top Surface | Mineral Granules (Black or White) |
| Back Surface | Fine sand release agent |
| Applicable Standards | Meets ASTM D6164, Grade G, Type I. |
System Components
PERM-A-BARRIER® HRA – Hot Rubber Membrane
PERM-A-BARRIER® HRA FABRIC– Polyester Reinforcement
PERM-A-BARRIER® HRA NEOPRENE 12” x 100’ – Neoprene for Flashing
PERM-A-BARRIER® HRA NEOPRENE 6” x 100’ – Neoprene for Flashing
PERM-A-BARRIER® HRA PROTECTION G – Fiberglass Protection Sheet
PERM-A-BARRIER® HRA PROTECTION P – Polyester Protection Sheet
BITUTHENE® ADHESIVE PRIMER B2 LVC - Primer
PERM-A-BARRIER® HRA CAP – Cap Sheet for Wall Flashing
Safety & Handling
PERM-A-BARRIER® products must be handled properly. Do not handle until all safety precautions and instructions have been read and understood. Refer to product label and SDS before use. SDSs can be obtained from www.gcpat.com or your local representative.
STORAGE & USE
Rolls should be stored upright off the ground and completely protected from the weather. Substrates must be structurally sound, dry, smooth, and meet or exceed minimum requirements of local codes and GCP. Do not attempt application if ice, snow, moisture, or dew are present or inclement weather is expected. Consult GCP or your local representative for additional specifications and precautions.
APPLICATION
PERM-A-BARRIER HRA CAP must be applied in accordance with GCP installation procedures. Ensure substrates to receive a PERM-A-BARRIER HRA CAP are smooth, dry, and clean. The following information is intended for general information purposes only and is not all-inclusive.
For flashing applications using PERM-A-BARRIER HRA PROTECTION G as the base membrane, install it in accordance with manufactures requirements. Over the PERM-A-BARRIER HRA PROTECTION G, install one ply of PERM-A-BARRIER HRA CAP lapping it 3" (76.2 mm) on sides and extending membrane a minimum of 6" (152.4 mm) into the field and at least 2" (50.8 mm) past base membrane. Apply base and cap membranes in such a manner as to provide and maintain a minimum 6" (152.4 mm) offset between side and end laps of of each sheet. PERM-A-BARRIER HRA CAP side and end laps must be fully adhered in a complete mopping of hot rubberized asphalt with asphalt extending approximately ⅜" (9.4 mm) beyond lap edge.
PERM-A-BARRIER HRA CAP is also used as the top finishing membrane on hot rubberized asphalt flashings reinforced with neoprene or polyester without the need for a modified bitumen base membrane. Over the neoprene or polyester fabric reinforced base layer install one ply of PERM-A-BARRIER HRA CAP in a solid application of hot rubberized asphalt. Lap it 3" (76.2 mm) on sides and extend membrane a minimum of 6" (152.4 mm) into the field. Ensure asphalt extends approximately ⅜" (9.4 mm) beyond lap edges.
PERM-A-BARRIER HRA CAP can also be used in the field as a final surfacing or protection sheet. Membrane is to be lapped 3" (76.2 mm) on sides and 6" (152.4 mm) on the ends with end laps staggered not less than 3" (76.2 mm) apart. Laps must be fully adhered in a complete mopping of hot rubberized asphalt with asphalt extending approximately ⅜" (9.4 mm) beyond lap edge.
Cold weather applications require special handling to prevent damage to the rolls and ensure satisfactory installation. Do not apply waterproofing systems over improperly prepared substrates or substrates that contain moisture. Rubberized asphalt temperature the melter must be 380°-400°F (193°-204°C) to ensure proper adhesion.
PHYSICAL PROPERTIES
| Test Description | Test Method | Results* |
| Softening Point | ASTM D36 | 260°F |
| Tensile Strength | ASTM D5147 @ 73.4 +/- 3.6°F MD/XD @ 0 +/- 3.6°F MD/XD | 90/65 lbs./in. 125/75 lbs./in. |
| Elongation | ASTM D5147 @ 73.4 +/- 3.6°F MD/XD @ 0 +/- 3.6°F MD/XD | 60%/120% 35%/35% |
| Dimensional Stability | ASTM D5147 MD/XD | 0.1%/0.1% |
| Low-Temperature Flex | ASTM D5147 | Pass @ -20°F |
| Compound Stability | ASTM D5147 | 250°F |
| Thickness | ASTM D5147 | 3.7 mm (145 mils) |
| Tear Strength | ASTM D5147 @ 73.4 +/- 3.6°F MD/XD | 135/100 lbs. |
*NOTE: Published results are nominal production values confirmed by independent laboratory testing.
TECHNICAL ASSISTANCE & SERVICES
GCP provides technical assistance in the product selection, specification, and application guidelines for all GCP HRA systems. Field representatives are available for consultation in each region.
For more information, contact GCP Technical Services
gcpat.com | North America Customer Service: +1 (877) 423 6491
GCP Applied Technologies Inc., 2325 Lakeview Parkway, Suite 400, Alpharetta, GA 30009, USA
GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6
This document is only current as of the last updated date stated below and is valid only for use in the United States. It is important that you always refer to the currently available information at the URL below to provide the most current product information at the time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations and other relevant documents are also available on www.gcpat.com. Information found on other websites must not be relied upon, as they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content. If there are any conflicts or if you need more information, please contact GCP Customer Service.
Last Updated: 2024-06-24
https://gcpat.com/en/solutions/products/perm-a-barrier-hra-waterproofing-system/perm-a-barrier-hra-cap-data-sheet