Astragal Seals

Astragal seals are a simple, effective way to close the gap between meeting stiles on double doors and improve the overall performance of your door system. Whether you are working on a residential renovation, a commercial fit-out or a large-scale project across Queensland or New South Wales, astragal seals help control drafts, light, insects, noise and weather. At John Barnes Group, you can buy astragal seals online with confidence, backed by decades of experience in architectural door hardware across Australia.

What Are Astragal Seals and Why They Matter

An astragal seal is fitted to the edge of a door leaf to close the gap between two doors when they meet in the middle. On front entry sets, internal double doors and external doorways, this gap can be a weak point for comfort, privacy and security. A well-chosen astragal seal helps reduce air leakage, improves acoustic performance and gives a neater, more premium finish to your opening. They are an essential part of modern, contemporary door hardware packages, working alongside handles, locks and hinges from trusted brands like Barben, Dormakaba, Lockwood and Zanda.

Protect Your Doors from Weather, Noise and Light Gaps

For many homes and commercial buildings in Brisbane and across Queensland, double doors are a key feature at entries, decks and balcony openings. Without the right astragal seal, you can be left with noticeable light gaps, drafts and even water ingress in exposed areas. Astragal seals help to:

• Improve weather protection on external doors, especially in windy or coastal locations.
• Minimise drafts and temperature transfer for better comfort and energy efficiency.
• Reduce noise transfer between spaces for both residential and commercial doors.
• Block light and improve privacy in bedrooms, boardrooms and meeting spaces.

When combined with quality perimeter and threshold seals, astragal seals form part of a complete sealing system for higher performance front doors and external openings.

Solutions for Residential and Commercial Doors

John Barnes Group supplies astragal seals suitable for a wide range of residential and commercial applications throughout Queensland, New South Wales and Australia-wide. In homes, they are ideal for French doors, patio doors, media rooms and internal double doors where you want a tight, clean joint between leaves. In commercial environments, astragal seals are commonly used on:

• Office entry doors and internal glazed suites.
• Education facilities, including lecture theatres and classrooms.
• Healthcare and aged care settings for patient rooms and consulting spaces.
• Hospitality and retail doors where comfort and acoustic control matter.

Our range is designed to complement the broader suite of architectural door hardware, including premium Barben pull handles, Dormakaba door controls, Lockwood locks and Zanda leversets, giving you a unified solution for your project.

Designed to Complement Modern Architectural Door Hardware

Astragal seals are not just functional – they also need to sit neatly within your overall door design. Many profiles are slim, discreet and designed to blend with modern, contemporary door hardware selections. Typically manufactured in aluminium with durable sealing inserts, astragal seals can coordinate well with popular finishes such as matte black, stainless steel-look or classic satin. This makes them ideal for premium front door packages where you might be pairing:

• A Barben pull handle set with sleek, minimal meeting stile seals.
• Dormakaba door closers and accessories on high-traffic commercial openings.
• Lockwood mortice locks on double timber doors requiring practical astragal solutions.
• Zanda architectural levers and accessories on internal double doors where aesthetics are key.

By choosing astragal seals that complement your hardware finishes, you maintain a cohesive and professional look across the entire project.

Choosing the Right Astragal Seal for Your Project

Consider Door Location and Function

The first step in selecting an astragal seal is understanding where the door is located and how it will be used. Front doors and external doors may need more robust sealing for weather and security, while internal double doors might focus on privacy and acoustic control. High-traffic commercial openings may benefit from heavy-duty profiles, while residential doors can often use slimmer, more discreet options.

Door Construction and Meeting Stile Type

Astragal seals are used on timber, metal and some aluminium-framed doors. You will need to consider whether your doors are rebated or square meeting stiles, as the correct profile will depend on how the leaves meet. Many seals are designed to be surface-mounted to one door leaf, overlapping the other to create an effective seal line when the doors are closed.

Performance Requirements

Some projects prioritise weather and draft control, while others focus on noise reduction or privacy. When browsing our astragal seals Australia-wide online, review the product information to match the performance level required for your opening. For doors that may be part of fire or smoke-rated assemblies, always refer to the product details and relevant building requirements, and consult your certifier or fire engineer if you are unsure.

Finishes and Visual Impact

Although astragal seals are generally slim and unobtrusive, finish selection still matters, especially on premium residential doors. Many professionals select aluminium finishes that sit comfortably alongside matte black hardware, stainless steel fittings or brass-toned accessories from brands such as Zanda, Barben, Dormakaba and Lockwood. Choosing a profile and finish that coordinates with your hinges, locks and handles will ensure a clean, cohesive result.

Serving Brisbane, Queensland, New South Wales and Australia-Wide

John Barnes Group is a trusted supplier of architectural door hardware and astragal seals throughout Brisbane and regional Queensland, with strong coverage into New South Wales and projects Australia-wide. Whether you are a builder, locksmith, shopfitter, facilities manager or architect, our online store makes it easy to buy astragal seals online and have them delivered to site. Our experienced team understands local conditions, from coastal environments to high-traffic commercial buildings, and can help you choose practical solutions for both residential and commercial applications.

Frequently Asked Questions

What is an astragal seal?

An astragal seal is a door-edge seal fitted where two door leaves meet in the middle. It overlaps or engages with the opposite door leaf to close the gap between them. This helps reduce drafts, noise, light and dust infiltration, and can contribute to better weather and acoustic performance. Astragal seals are commonly used on front doors, French doors and commercial double doors.

Where are astragal seals typically used?

Astragal seals are used on any pair of doors that meet in the centre and require improved sealing or privacy. Common locations include external French doors, balcony and deck doors, double entry doors, meeting rooms, theaters, classrooms and other internal double doors in commercial buildings. They are suitable for both residential and commercial projects across Brisbane, Queensland, New South Wales and broader Australia.

Are astragal seals suitable for front and external doors?

Yes, many astragal seals are designed to perform well on front doors and other external openings. When selecting a product for external use, look for durable materials and designs that help limit weather, drafts and insects. Pairing astragal seals with complementary perimeter and threshold seals can provide a more complete solution for exposed entries and high-wind locations.

Can astragal seals be used on fire or smoke doors?

Astragal seals may form part of a fire or smoke door assembly, but it is essential to confirm suitability in each case. Always review the product information and consult the door set manufacturer, certifier or fire engineer to ensure the combination of door leaf, frame, hardware and seals complies with the relevant requirements. Do not assume any astragal seal is fire- or smoke-rated unless clearly stated by the manufacturer.

Do astragal seals affect how my door hardware operates?

Correctly selected and installed astragal seals should work smoothly with quality hardware from brands such as Barben, Dormakaba, Lockwood and Zanda. They are designed to fit neatly along the door edge without interfering with locks, latches or hinges. In some cases, minor adjustment of latch strikes or closing forces may be needed to cater for the additional sealing pressure, particularly on tightly sealed external doors.

Can I trim astragal seals to suit my door height?

Most astragal seals can be trimmed on site to match the exact height of your doors. The aluminium or carrier section is cut to length, and the sealing insert may also be shortened as required. Always follow the manufacturer’s recommendations, measure carefully and take appropriate safety precautions when cutting. For large commercial projects or fire-rated assemblies, many specifiers prefer factory-prepared door sets.

Can I install astragal seals myself, or do I need a professional?

For standard residential doors, many competent DIYers and trades are comfortable installing astragal seals with basic tools, following the installation instructions supplied with the product. For commercial projects, high-performance acoustic doors or fire and smoke doors, it is generally recommended that a qualified carpenter, door technician or locksmith handle installation to ensure the seal functions correctly and any compliance requirements are maintained.

Do astragal seals change the look of my door?

Astragal seals are typically slim and designed to be as discreet as possible, especially when paired with modern, contemporary architectural door hardware. Choosing a finish that matches or complements your hinges, locks and handles – such as matte black, stainless steel-look or a neutral aluminium tone – helps the seal visually blend into the door edge. This allows you to achieve a premium, high-performance doorway without compromising on aesthetics.

How do I buy astragal seals online from John Barnes Group?

You can easily buy astragal seals online through the John Barnes Group store. Browse the range, review product details to confirm suitability for your door type and performance needs, and add your selected items to the cart. Our team supports customers across Brisbane, Queensland, New South Wales and Australia-wide, so you can order from site or the office and have quality astragal seals delivered to your project.

Why Choose John Barnes Group?

John Barnes Group combines specialist knowledge in architectural door hardware with a comprehensive online range of astragal seals, locks, handles and accessories. We support builders, architects, locksmiths and facility managers across Brisbane, Queensland, New South Wales and Australia-wide with practical, reliable solutions for both residential and commercial doors. When you choose John Barnes Group, you get more than just products – you gain a knowledgeable partner who understands how to bring door assemblies together for performance, longevity and a premium finish.