How AeroBarrier Technology Ensures Measurable Airtightness Results in Buildings
Introduction: Beyond Traditional Sealing Methods
For decades, achieving airtightness in buildings relied on a combination of manual caulking, spray foam, gaskets, and tape applied by workers who could only access visible surfaces. The results were inconsistent, labour-intensive, and often impossible to verify without expensive post-construction testing. Even when tests revealed persistent leakage, pinpointing the sources and remedying them was a costly, disruptive exercise.
AeroBarrier technology fundamentally changes this paradigm. Rather than relying on human access to every leak point, AeroBarrier uses air pressure and particle physics to find and seal every gap automatically — from the inside, simultaneously, and with a measurable, guaranteed outcome. For engineers, MEP consultants, and building scientists working on demanding Saudi projects, this is a transformational development.
The Science Behind AeroBarrier
AeroBarrier is an aerosol-applied sealant system. It works by exploiting the same air pressure difference used in standard airtightness testing. The building is pressurised using blower door fans while a water-based acrylic sealant is introduced as an ultra-fine aerosol mist inside the building.
Air molecules naturally flow from high-pressure zones to low-pressure zones through any available pathway — cracks, joints, penetrations, and gaps. The sealant particles carried in this airflow are drawn toward these exit points. At the edge of each gap, where the airspeed increases and the particles change direction, they impinge on the surface and accumulate, gradually bridging the opening. This process is entirely physics-driven and requires no human intervention to locate or target individual leak points.
The sealant is non-toxic, water-based, and contains no harmful VOCs. It is safe for use in occupied buildings during application and leaves no residue on interior surfaces beyond the sealed gaps.
Real-Time Performance Monitoring
One of AeroBarrier’s key differentiators is its real-time monitoring capability. Throughout the sealing process, the software interface tracks the building’s air leakage rate continuously. Technicians and project managers can observe the leakage value declining in real time as each session progresses.
This creates a transparent, auditable record of performance that no other sealing method can match. At the end of the session, the final airtightness value — expressed in ACH50, CFM50, or m³/(h·m²) — is logged, timestamped, and included in the performance certificate. This documentation can be submitted directly to regulatory authorities, LEED auditors, or client project teams.
Targeting the Envelope: Where AeroBarrier Works
The building envelope — the boundary between conditioned interior space and the outdoor environment — is the primary zone addressed by AeroBarrier. Common leak sources at envelope level include:
- Connections between walls and floors or ceilings (top and bottom plates)
- Window and door frame perimeters, especially where frames meet rough openings
- Penetrations for electrical conduits, plumbing pipes, and HVAC ductwork
- Recessed light fittings and ceiling penetrations
- Expansion joints and movement gaps in concrete structures
- Connections between different building materials or assemblies
In conventional construction, these points are addressed manually during finishing works. However, many are concealed behind wall linings, above ceiling panels, or inside service voids by the time post-construction testing occurs. AeroBarrier bypasses this problem entirely because it seals from the air side — finding and filling gaps regardless of physical accessibility.
Comparison with Traditional Sealing Approaches
Traditional envelope sealing methods depend entirely on technicians physically locating every leak source. Even with thermal imaging and smoke pens to aid detection, the process is slow, expensive, and incomplete. Studies in comparable climates have shown that manual sealing typically achieves only 30% to 50% reduction in air leakage, and results vary significantly depending on the skill and thoroughness of the workforce.
AeroBarrier consistently achieves 50% to 90%+ reduction in a single session, regardless of building complexity. The technology has been deployed successfully on projects ranging from single-family villas to multi-storey commercial towers, hospitals, cleanrooms, and data centres.
Furthermore, because AeroBarrier seals gaps of 0.5mm to 10mm — the range that contributes the most to bulk air leakage — it targets the issue at its root rather than applying surface treatments that degrade over time.
Applications for Saudi Projects
In Saudi Arabia’s construction environment, AeroBarrier is particularly valuable at two project stages: pre-handover commissioning, and retrofit of existing buildings that fail compliance testing under the Saudi Building Code.
For new construction, AeroBarrier is typically applied after the building is fully enclosed and before final fit-out works are complete. This timing allows the sealant to address envelope gaps without interference from furniture, installed equipment, or finishes. For retrofits, the process can be applied room-by-room or zone-by-zone, minimising disruption to building occupants.
Saudi giga-projects such as NEOM and the Red Sea Project have set ambitious sustainability benchmarks. AeroBarrier provides a technically credible, certifiable path to meeting these benchmarks consistently across large, complex building portfolios.
Conclusion: Measurable, Certifiable, Guaranteed
For consultants specifying airtightness performance, for engineers seeking construction-phase solutions, and for project owners demanding compliance documentation, AeroBarrier delivers what no other approach can: a measurable, certifiable, guaranteed airtightness outcome. Aeroseal Arabia is the authorised provider of AeroBarrier technology in the Kingdom of Saudi Arabia, with the expertise and certification to deploy it across any building type or sector. Reach out today to discuss how AeroBarrier can be integrated into your project specifications.
