Henry Air-Bloc^® 33MR is a UV-resistant, one-component, elastomeric membrane that provides an air barrier on a range of construction surfaces. Liquid-applied with a trowel or spray, Air-Bloc^® 33MR cures to a tough, monolithic rubber-like membrane that resists air leakage along with UV radiation and weather.

Features

• Seamless, UV-resistant elastomeric membrane bridges cracks
• Adheres to most construction surfaces, including block, concrete, stone, wood and metal
• Can be applied to damp concrete
• Contains no organic solvents
• Integral mold resistant formulation as per ASTM D5990

Alternative product consideration:

Air-Bloc All Weather STPE

• Won’t wash off in the rain; rain ready in 30 minutes
• Can be exposed to UV for up to 365 days
• Cold weather advantage; sprayable down to 10 ^°F

Packaging

• Available in 5-gallon pails or 55-gallon drums

Complete the system

Blueskin^® Butyl Flash

Blueskin^® SA

Metal Clad^®

Henry^® 925 BES Sealant

Air-Bloc^® LF Liquid-Applied Flashing

Blueskin^® TWF

Literature

ABAA Air Barrier Material Evaluated Certificate

Inflation Reduction Act Summary for Commercial Buildings

Inflation Reduction Act ASHRAE 90.1 White Paper

5 Quick Tips for Air Barrier Selection

How to Chose the Right Air Barrier for Your Next Project

2021 IBC and IECC Changes Affecting Air and Water Barriers

• Installation and Technical Literature

  Air-Bloc^® 33MR Data Sheet  

  Air-Bloc^® 33MR SDS Sheet  

  Air-Bloc^® 33MR Health Product Declaration  

• Tech-Talks

  NFPA 285 Assemblies

  Fastener penetrations through air barrier membranes

  Henry® Air Barrier Assemblies Meet ASTM E2357

  Conversion Charts

  Coatings and Sealants

• Specifications

  Air-Bloc^® 33MR Guide Spec  

• Architectural Details

  AB-H130-33 Penetration Detail – Horizontal pipe

  AB-H129-33 Corner Details – Exterior sheathing

  AB-H128-33 Joint Treatment Details – Exterior gypsum sheating

  AB-H124B-33 Sequence Detail – Steel Stud/Flanged window installation

  AB-H124A-33 Sequence Detail – Steel Stud/Flanged window installation

  AB-H123B-33 Sequence Detail – Steel Stud/Rebate window installation

  AB-H123A-33 Sequence Detail – Steel Stud/Rebate window installation

  AB-H117-33 Plan Details – Steel Stud/CMU wall

  AB33MR-TID3A Air-Bloc 33MR transition with Pumadeq System

• LEED Declarations

  Air-Bloc® 33 LEED Declarations

• Health Product Declarations

  Air-Bloc® 33MR Health Product Declaration

Tools