Home / Products / Div 07 27 26 — 07 27 26 / R-Guard Cat 5 Fluid-Applied Air, Water and Waterproofing Barrier Membrane
Div 07 27 26 · 07 27 26
R-Guard Cat 5 Fluid-Applied Air, Water and Waterproofing Barrier Membrane
PROSOCO, Inc. · R-Guard Cat 5, item #70430
Written by BuildSpec from the manufacturer own Product Data Sheet, item #70430 - 022125, retrieved 2026-09-14. NOT marketing copy and NOT a rehosted document. *** WHAT MAKES THIS ROW UNUSUAL IS ALSO WHAT MAKES IT FRUSTRATING: PROSOCO PUBLISHES BOTH HALVES OF THE STRONGEST LINKAGE SHAPE THIS LANE RECOGNISES - NAMED TEST METHOD AND RESULTING NUMERIC VALUE - FOR THE TWO AIR-BARRIER CRITERIA THE ENERGY CODE ACTUALLY IMPOSES, AND THIS CORPUS HOLDS NEITHER PROVISION. 0.0007 L/s.m2 at 75 Pa by ASTM E 2178 for the material, 0.0009 L/s.m2 at 75 Pa by ASTM E 2357 for the assembly. Those are the numbers IECC 2021 C402.5.1.2 and C402.5.1.3 exist to test, AND NEITHER SECTION IS IN THIS LIBRARY. The link this row would most want to make cannot be made, and the reason is on our side, not theirs. See linkage.notLinked and the corpus defect recorded there.
✓ Verified 2026-09-14
Certifications & Standards
ICC Evaluation Service NAMED ON THE PRODUCT DATA SHEET. *** THIS IS THE LOAD-BEARING CREDENTIAL ON THIS ROW because IBC 2021 1403.2 item 4 permits a water-resistive barrier to be OTHER APPROVED MATERIALS installed per the manufacturer instructions, and an ICC-ES evaluation report is the ordinary route by which a proprietary material becomes approved. THE REPORT ITSELF WAS NOT RETRIEVED AND IS NOT HELD IN THIS CORPUS, so its number is recorded and NOTHING INSIDE IT IS CLAIMED - not its code editions, not its conditions of use, not its scope. It is the highest-value next fetch on this target.
ICC-ES (acceptance criteria issuer) Named on the data sheet. AC212 is the acceptance criteria for water-resistive coatings used as WRBs over exterior sheathing. NOT HELD IN THIS CORPUS and nothing in it is claimed.
ASTM (standard issuer; results published by the manufacturer, no third-party certificate published) *** THE BEST EVIDENCE ON THE SHEET AND IT LINKS TO NOTHING. Air permeance 0.0007 L/s.m2 at 75 Pa (ASTM E 2178, material). Air leakage 0.0009 L/s.m2 at 75 Pa (ASTM E 2357, assemblies). METHOD NAMED AND VALUE PUBLISHED, BOTH HALVES, FOR BOTH THE MATERIAL AND THE ASSEMBLY CRITERION. NO TESTING LABORATORY OR REPORT NUMBER IS NAMED FOR EITHER, so these are manufacturer-published results, NOT third-party-attested ones - a grade below the r1062 Freres WFCi report, and the distinction is recorded rather than blurred.
ASTM (standard issuers; methods named, results published where shown) All named on the data sheet. RESULTS ARE PUBLISHED FOR SOME AND NOT OTHERS AND THE DIFFERENCE IS PRESERVED: E 96 gives 14 perms wet cup and 10 perms dry cup; D 412 gives elongation at break greater than 400 percent; D 4541 gives pull adhesion pass at 110 kPa (16 psi) or substrate failure; C 297 gives tensile bond pass against a 15 psi minimum; E 84 gives Flame Spread 25 and Smoke Developed 10. *** ASTM E 331 IS NAMED WITH NO RESULT PUBLISHED ON THIS SHEET, and that matters because IBC 2021 1403.2 item 3 is an E331 route - see linkage.
Priest & Associates Consulting, LLS (named on the sheet; report NOT retrieved) *** THE SHEET NAMES NFPA 285 AND DEFERS THE OUTCOME TO A REPORT IT DOES NOT LINK. This is precisely the r1059 MBCI shape - method named, value deferred to an unlinked document - and it is treated the same way: THE METHOD IS RECORDED AND NO PASS, NO ASSEMBLY AND NO WALL TYPE IS ASSERTED. It is doubly moot here because NFPA 285 RETURNS ZERO ROWS ACROSS THIS ENTIRE CORPUS and IBC 2021 1402.5 is not held, so even a published pass would currently link to nothing.
What was checked, and what is deliberately not claimed
- Segment
- Segment insulation & air barriers is a two-subject segment and the CSI inherited the WRONG one of the two. The r1040 broad-segment rule holds; this is a sharper instance than usual because the segment name literally contains the correct answer alongside the wrong one.
- Payload_csi
- Payload CSI 07 21 00 THERMAL INSULATION IS WRONG IN KIND - right division, wrong family. THE MANUFACTURER FILES ITSELF: its own system specification document is titled SECTION 07 27 26 FLUID-APPLIED AIR & WATER-RESISTIVE BARRIER. Row written 07 27 26 on the manufacturer own word. Recorded as a payload error, not a refinement.
- Third_party_attestation
- NO TESTING LABORATORY OR REPORT NUMBER IS NAMED FOR ANY OF THE ASTM RESULTS ON THIS SHEET except NFPA 285, which names Priest & Associates and a report number but publishes no outcome. So every figure on this row is a MANUFACTURER-PUBLISHED RESULT, not a third-party-attested one. That is a grade below the r1062 Freres row, whose E119 result came from a named laboratory report retrieved in full, and the difference is recorded rather than blurred.
Attributes — product claims, not third-party certifications
fluid-applied membraneair barrierwater-resistive barriervapour permeablesilicone-polyurethane hybridexterior sheathingCMUprecast concretelow VOC
Sustainability
No sustainability metrics on file for this product.
Applies to Code Sections
Code sections where this product or product category is relevant. Click through to the viewer for full text and commentary.
continuous air barrier and water-resistive barrier plane behind exterior veneer on sheathing, CMU back-up or precastwaterproofing membrane on above-grade exterior wall assemblies