Astragal Seals

Astragal Seals

Astragal seals, also known as meeting stile seals, are vital components in door assembly systems where a tight seal is required between double doors. These seals enhance acoustic performance, fire resistance, energy efficiency, and protection against dust, light, and smoke infiltration. At John Barnes Group, we stock a wide selection of astragal seals from industry-leading brands including Kilargo, Lorient, and Raven—trusted names in architectural sealing systems.

Suitable for both commercial and residential projects, our astragal seals meet rigorous Australian standards for safety, accessibility, and performance. Whether you're working on a healthcare facility, hotel, educational building, or premium residential development, astragal seals are essential for achieving optimal door performance and compliance. Buy Astragal Seals online today from the John Barnes online shop!

What Are Astragal Seals?

Astragal seals are slim-profile seals installed at the meeting point of a pair of doors. They provide a barrier where the two doors meet, helping to prevent the passage of air, smoke, sound, light, and fire.

These seals can be surface-mounted or rebated into the door edge, depending on the aesthetic and performance requirements. They are commonly used in combination with other door seals such as drop seals and perimeter seals to provide a complete sealing solution.

Types of Astragal Seals

Buy Rebated Meeting Stile Seals online

Rebated astragal seals are installed into a rebate cut into the meeting edge of the door, offering a flush finish. This design improves the door's acoustic and fire resistance capabilities without affecting its appearance.

Use cases:

• Acoustic-rated double doors

• Fire-rated doors

• Commercial office suites

Buy Surface-Mounted Astragal Seals online

These are affixed directly to the door face and are easier to retrofit to existing doors. Available in various profiles and finishes to suit project aesthetics.

Use cases:

• Retrofitting existing doors

• Light commercial and residential use

• Smoke and draft control

Buy Smoke Seals online

Smoke-rated astragal seals help to contain smoke movement between compartments, as required by building codes and fire regulations.

Use cases:

• Fire-isolated stairwells

• Aged care facilities

• Public buildings and high-rise developments

Buy Fire-Rated Astragal Seals online

Fire-tested in accordance with AS1530.4, these seals are critical in door assemblies that form part of a fire barrier. They prevent flame and heat transfer through the meeting stile.

Use cases:

• Hospital corridors

• Plant room doors

• Fire-rated inter-tenancy doors

Buy Acoustic Astragal Seals online

Designed for sound attenuation, acoustic astragal seals are used in music rooms, boardrooms, and anywhere noise control is a priority.

Use cases:

• Auditoriums

• Office partitions

• Luxury apartments

Key Features and Specifications

• Materials: Aluminium carriers with silicone, rubber, or thermoplastic elastomer (TPE) sealing components

• Profiles: Rebated or surface-mounted

• Fire Ratings: Tested to AS1530.4 for 30, 60, 90, and 120 minutes

• Acoustic Ratings: RW ratings up to 40+ when used as part of a sealing system

• Compliance: Smoke and draft control to AS/NZS 1905.1 and AS1530.7

• Finishes: Clear anodised, bronze, black anodised, or powder-coated options available

Australian Standards and Compliance

All astragal seals supplied by John Barnes Group are tested to meet or exceed relevant Australian standards. These include:

• AS1530.4: Fire resistance tests of elements of construction

• AS/NZS 1905.1: Fire doorsets

• AS1530.7: Smoke control tests for door assemblies

• ISO 717-1 for acoustic rating performance

• AS1428.1: Ensuring the seal system does not impede door operation or accessibility

Material and Durability Considerations

Aluminium with Silicone Inserts

Common for high-performance fire and acoustic seals, aluminium carriers provide rigidity while silicone maintains an effective barrier over time.

Thermoplastic Elastomer (TPE)

Durable and cost-effective, TPE inserts offer flexibility and longevity under repeated door usage.

Brush Seals

Occasionally used in less critical applications, brush astragal seals provide effective dust and light control but lower acoustic and fire ratings.

Applications: Residential vs Commercial

Residential Applications

In high-end residential and multi-residential developments, astragal seals contribute to privacy, comfort, and environmental efficiency:

• Apartments: Enhanced inter-tenancy acoustic separation

• Home theatres: Soundproofing performance

• Energy-efficient homes: Thermal sealing for reduced energy consumption

Commercial Applications

For commercial and public buildings, astragal seals are often mandatory for code compliance and occupant safety:

• Health care and aged care: Smoke and fire barrier maintenance

• Educational institutions: Improved classroom acoustics

• Commercial offices: Sound privacy in meeting rooms and suites

• Hotels: Noise isolation for guest comfort

Brand Highlights

Buy Kilargo Astragal Seals online

A market leader in sealing systems, Kilargo offers a wide range of high-performance astragal seals tested for fire, smoke, and acoustic control. Their products are extensively used in healthcare and commercial settings for their proven reliability.

Buy Lorient Astragal Seals online

Lorient’s British-designed sealing systems are specified globally for fire and acoustic door performance. Their astragal seals integrate well with architectural aesthetics while maintaining strict compliance with local and international standards.

Buy Raven Astragal Seals online

An iconic Australian brand, Raven manufactures astragal and perimeter sealing systems for both new and retrofit applications. Their seals are known for performance, innovation, and broad applicability across building types.

Product Selection Guidance

For Architects and Designers

• Specify seals based on RW rating requirements and fire/smoke barrier function

• Match finishes with surrounding door hardware for a seamless appearance

• Ensure AS1428.1 compliance in accessible building areas

For Builders and Installers

• Choose profile types based on ease of installation (rebated vs surface-mounted)

• Confirm fire ratings and ensure compatibility with fire doors

• Use with matching drop seals and perimeter seals for system-level compliance

For Residential Clients

• Opt for low-profile, aesthetically integrated seals for modern interior doors

• Focus on acoustic performance in bedrooms, theatres, or shared-wall areas

• Select seals compatible with timber, aluminium, or steel doors

Installation Tips

• Ensure correct positioning for full door contact when closed

• Combine with drop seals for maximum acoustic and smoke performance

• Maintain door clearance and swing arc per manufacturer and standard requirements

• Use appropriate fixings and adhesives for long-term integrity

Maintenance and Care

• Regularly inspect seal compression and integrity

• Clean with non-abrasive, neutral pH cleaners

• Replace damaged or aged sealing components to maintain performance

Order from John Barnes Group

At John Barnes Group, we offer a premium selection of astragal seals backed by decades of industry expertise. Our team provides:

• Product recommendations tailored to your project’s needs

• Fire, acoustic, and accessibility compliance guidance

• Custom sourcing and end-to-end hardware scheduling

Contact us today to discuss your requirements: https://johnbarnesgroup.au/contact/