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Boosting Anti-Condensation Paints with 3M™ Glass Bubbles
Explore formulation approaches using 3M™ Glass Bubbles for anti-condensation paint development.
Discover techniques for integrating these microspheres while evaluating formulation objectives related to moisture management, thermal behaviour and paint performance.
The rising demand for anti-condensation paints has led to innovative solutions designed to manage moisture-related challenges in homes. One approach involves using 3M™ Glass Bubbles in paint formulations. This guide discusses their potential role in anti-condensation paint development and the importance of evaluating final coating systems for their intended application.
Table of Contents:
Related 3M™ Glass Bubbles Articles
The Legacy of Innovation – 3M™ Glass Bubbles
Mastering the Metering and Mixing of 3M™ Glass Bubbles
3M™ Glass Bubbles and 3M™ Ceramic Microspheres in the EU Ecolabel Framework
Understanding Condensation and Its Issues
Condensation is a common issue in homes, particularly in areas with high moisture levels like bathrooms, kitchens, and basements. It occurs when moist air comes into contact with cold surfaces, leading to the formation of water droplets. Over time, this can cause mold growth, mildew, and structural damage.
3M™ Glass Bubbles: An Overview
3M™ Glass Bubbles are high-strength, low-density, inorganic additives made from soda-lime-borosilicate glass. These bubbles are used across various industries for their thermal insulation properties. Their hollow structure can contribute to reduced thermal conductivity in formulated materials.
The structure of 3M™ Glass Bubbles
Enhancing Anti-Condensation Paints
There are two primary types of anti-condensation paints:
- Porous Paints: Formulated above the Critical Pigment Volume Concentration (CPVC), these paints absorb moisture but often have lower durability and resistance to stains and scrubs.
- Non-Porous Paints: Formulated below CPVC, these paints represent a formulation design approach. Below-CPVC design alone does not establish that every final coating is waterproof, durable or provides a specific thermal insulation performance. Final-system suitability should be evaluated for the intended application.
Role of 3M™ Glass Bubbles
3M™ Glass Bubbles may be considered as part of a formulation strategy intended to influence thermal behaviour. The proposed mechanism should be distinguished from the measured laboratory endpoint. In the reported test method, the recorded endpoint was when the first accumulated water drop fell or slid from the panel after droplets formed and coalesced.
Test Methods and Results
Condensation Time Test
To evaluate the effectiveness of anti-condensation paints, a condensation time test was developed. This test measures the time until the first accumulated water drop falls or slides from the painted surface after droplet formation and coalescence under the study conditions.
Test setup for measuring condensation time on painted surfaces.
Comparative performance of various anti-condensation paints.
Test setup for measuring condensation time on painted surfaces.
Comparative Performance
Various anti-condensation paint formulations were tested. The study reported separate comparisons: a commercial-paint comparison and a separately developed S22 laboratory formulation. The reported results do not isolate filler-only contribution in an otherwise identical formula.
Comparative performance of various anti-condensation paints.
Reported Anti-Condensation Formulation
A laboratory anti-condensation paint formulation using 3M™ Glass Bubbles S22 was reported with an average total time of 45 minutes to the study endpoint, compared with 24 minutes for the standard reference in the same laboratory test. The endpoint was defined as the point when the first accumulated water drop falls or slides from the panel after droplet formation and coalescence. This result is not an extra 45-minute extension and does not establish filler-only performance.
Conclusion
3M™ Glass Bubbles can be evaluated as part of anti-condensation paint formulation strategies. The reported S22 laboratory formulation result relates to the study endpoint described above and does not demonstrate humidity removal or mould prevention/remediation. General moisture-control measures, including managing humidity sources, ventilation and condensation conditions, remain important.
Related formulation considerations and applications are discussed in Part 2
Questions about
anti-condensation paint formulations?
Sources
3M. The use of 3M™ Glass Bubbles to increase time until condensation forms on painted surfaces. Technical paper, issued July 2018, publication 14046HB / 98-0212-4284-1. (Download Source)
Relevant locators: p.1 CPVC/design context; p.2 calculated bubble values and test setup; p.3 endpoint narrative and Table 2 reference column (24 minutes); p.4 laboratory narrative and adjacent blue property block (45-minute average total), with Table 3 identifying the formulation; p.5 technical-information and application-suitability limitations. Historical laboratory study, not a household field trial.
US Environmental Protection Agency. A Brief Guide to Mold, Moisture and Your Home. Page last updated February 18, 2026. (See Source)
Relevant locator: Moisture and Mold Prevention and Control Tips, including Actions that will help to reduce humidity and Actions that will help prevent condensation. General residential guidance, not a test or endorsement of 3M products.
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Increasing Time Until Condensation: Advanced Applications of 3M™ Glass Bubbles (Part 2)
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Increasing Time Until Condensation: Advanced Applications of 3M™ Glass Bubbles (Part 2)
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