Why Steel Double Doors Are a Smart Investment
Why Steel Double Doors Make a Dramatic First Impression
Steel double doors are an increasingly popular choice for Australian homes and businesses seeking to combine security, durability, and style. These paired entryways create an impressive statement while offering practical benefits that other door materials simply cannot match.
Key Benefits of Steel Double Doors:
Improved Security - 18-gauge steel construction with multi-point locking systems
Impressive Durability - Resistant to warping, cracking, and termite damage
Energy Efficient - Available with R-values up to 7.14 for reduced energy costs
Fire Resistant - Options available with ratings up to 3 hours
Low Maintenance - No need for regular sanding, staining or sealing
Weather Resistant - Excellent performance in harsh Australian climates
Striking Aesthetics - Available in over 40 size combinations with various finishes
When designed and installed properly, steel double doors create a grand entrance that lifts your property's curb appeal while providing superior protection against intruders, fire, and extreme weather. Their robust construction means they won't warp, crack or split like timber alternatives, making them particularly well-suited for Queensland's challenging climate.
I'm Brent Goschnick, Director of G&M Craftsman Cabinets with over 23 years in the cabinetry and joinery industry, and I've personally overseen countless steel double doors installations that have transformed entryways across the Sunshine Coast.
Steel Double Doors: Definition & Differences
Steel double doors consist of two door leaves that meet in the middle when closed, creating a wider entryway than standard single doors. These impressive entryways typically feature a hollow-metal core construction with galvanised steel skins that provide exceptional strength and durability.
A key component of steel double doors is the astragal—a specially designed vertical strip that runs along the meeting stile where the two doors come together. This critical element not only improves security by preventing the doors from being forced apart but also provides weather sealing and, in fire-rated models, helps maintain the integrity of the fire barrier.
Unlike single doors, double doors can be configured for various opening styles:
Double swing - Both doors can swing in either direction
Outswing - Both doors open outward (excellent for emergency exits)
Inswing - Both doors open inward (traditional for residential entries)
At G&M Craftsman Cabinets, we've installed numerous steel double door configurations across the Sunshine Coast, from Noosa to Pelican Waters, with each project custom to the specific needs and style preferences of our clients.
What Makes a Door a "Steel Double Door"?
True steel double doors feature several distinguishing characteristics that set them apart from other entry options:
Paired door leaves that create a symmetrical appearance and wider opening
Galvanised steel skins (typically 1.2mm to 2mm thick) that resist corrosion
Insulated cores using polystyrene, polyurethane foam, or honeycomb structures for thermal and acoustic performance
Reinforced frames designed to support the weight and movement of dual door operation
Specialised hardware including flush bolts, coordinators, and astragals to manage the operation of two doors working together
The construction quality of steel double doors is crucial to their performance. At G&M Craftsman Cabinets, we source only the finest materials and hardware from trusted providers like Furnware Dorset, Blum, Titus Plus, Kethy, Hettich, and Häfele to ensure exceptional quality and longevity.
Single vs Double: Space, Access & Style
The choice between single and double doors often comes down to three key considerations: available space, access requirements, and aesthetic preferences.
Space Considerations:
Steel double doors require sufficient wall space on either side to accommodate both door leaves when open
Single doors need less wall clearance but provide a narrower entry point
Access Benefits:
Steel double doors typically provide a clear opening of 1.2m to 2.4m when both leaves are open
This wider access makes moving furniture, appliances, and bulky items significantly easier
For homes with wheelchair access requirements, the extra width can be essential
Style Impact:
Steel double doors create a grand, symmetrical façade that makes a bold architectural statement
They establish a sense of importance and formality to an entrance
The larger surface area provides more opportunity for decorative elements like glass panels
One of our recent projects in Buddina showcased how steel double doors transformed a modest entrance into an impressive, light-filled entryway that completely changed the character of the home's façade.
Top Benefits of Installing Steel Double Doors
When it comes to making a significant improvement to your property, steel double doors offer an impressive array of advantages that make them a worthwhile investment. Here are the seven most compelling benefits our clients across the Sunshine Coast have experienced:
Superior Strength - The 18-gauge steel construction provides exceptional rigidity and resistance to impacts, with some models capable of withstanding substantial force without deformation.
Improved Burglary Resistance - Steel double doors paired with quality hardware from providers like Furnware Dorset create a formidable barrier against forced entry. Many models feature reinforced strike plates and multi-point locking systems.
Impressive Fire Ratings - Quality steel double doors can achieve fire ratings of up to 120 minutes, with some commercial models offering up to 3-hour protection with WHI/ITS certification.
Energy Efficiency - Modern steel double doors can be Energy-Star qualified with R-values of up to 7.14 and U-values as low as 0.14, significantly reducing heating and cooling costs.
Superior Weather Sealing - Advanced weatherstripping and threshold designs keep out drafts, dust, and moisture, making them ideal for Queensland's variable climate conditions.
Minimal Maintenance Requirements - Unlike timber, steel double doors won't warp, crack, split or rot, eliminating the need for regular sanding and resealing.
Increased Property Value - The combination of improved security, energy efficiency, and striking appearance can significantly boost your property's resale value.
Our commitment to quality is evident in every steel double door installation we complete. We exclusively use premium hardware from trusted brands like Blum, Titus Plus, and Häfele to ensure smooth operation and lasting performance.
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Why Choose Steel Double Doors for Australian Homes
The Australian climate presents unique challenges that make steel double doors particularly well-suited to our conditions:
Cyclone Resistance: In coastal areas of Queensland, properly rated steel double doors can withstand the high wind pressures experienced during cyclone season. These doors are engineered with reinforced frames and multi-point locking systems that distribute force evenly, preventing failure during extreme weather events.
Bushfire Protection: For properties in bushfire-prone areas, BAL-rated (Bushfire Attack Level) steel double doors provide crucial protection. These specialised doors are constructed with non-combustible materials and improved sealing to resist ember attack and radiant heat, with options available up to BAL-40 classification.
Coastal Durability: The salt-laden air in coastal regions like the Sunshine Coast can rapidly deteriorate standard building materials. Steel double doors with proper galvanising and powder-coating treatments resist corrosion, making them ideal for beachside properties from Noosa to Pelican Waters.
Heat Reflection: The reflective properties of steel, combined with insulated cores, help steel double doors minimise heat transfer during Queensland's scorching summers, contributing to more comfortable interior temperatures and reduced cooling costs.
At G&M Craftsman Cabinets, we understand these regional challenges intimately and select materials and construction methods specifically designed to perform in our unique Australian conditions.
Security & Fire Performance
The security and fire safety aspects of steel double doors deserve special attention, as they represent two of the most significant advantages over alternative materials.
Improved Security Features:
Multi-point locking systems that secure the door at several points along the frame
Titus Plus heavy-duty hinges that resist attempts to remove the door from the frame
Automatic flush bolts that engage when the active door closes, securing the inactive leaf without manual operation
Reinforced strike plates that distribute force and prevent frame damage during attempted break-ins
Anti-drill plates protecting lock cylinders from drilling attacks
Fire Safety Advantages:
Fire ratings up to 3 hours with proper WHI/ITS certification
Intumescent seals that expand when exposed to heat, sealing gaps against smoke and flames
Self-closing mechanisms that ensure doors return to the closed position automatically
Coordinated closing on double doors to ensure proper latching sequence
Non-combustible construction that won't contribute to fire spread
One of our recent commercial installations in Maroochydore featured steel double doors with a 90-minute fire rating and integrated panic hardware, providing both fire compartmentalisation and emergency egress capabilities for a retail space.
Design, Sizes & Customisation Options
Steel double doors offer remarkable versatility in design, with over 40 standard size combinations available to suit virtually any entryway. Standard sizes typically range from 48 × 80 inches (approximately 1220 × 2030 mm) up to 104 × 80 inches (2640 × 2030 mm), but custom dimensions are readily available for unique openings.
The aesthetic options for steel double doors are equally diverse:
Glass Configurations:
French-lite (multiple small panes)
Full-lite (maximum glass area)
Half-lite (upper portion glazed)
Quarter-lite (small vision panel)
Decorative patterns and etched designs
Panel Styles:
Flush (smooth, contemporary finish)
Embossed panels (traditional raised designs)
Custom architectural patterns
Textured surfaces
Finish Options:
Powder-coat finishes in virtually any colour
Heritage black for traditional styling
Coastal white for Hampton's-inspired designs
Custom RAL colour matching for precise architectural specifications
Metallic and textured finishes for unique effects
At G&M Craftsman Cabinets, we work closely with our clients to select the perfect steel double door design that complements their property's architectural style. Our partnerships with premium hardware suppliers like Silestone, Blum, and Häfele ensure that every detail, from handles to hinges, meets our exacting standards.
Empire Steel Doors and Windows
Most Requested Glass Layouts for Steel Double Doors:
6-panel with arched top glass
4-lite equal division
Full-lite with Georgian bars
3/4-lite with bottom panel
1/2-lite with decorative wrought iron grilles
Craftsman-style 3-panel with top glass
Popular Configurations That Feature Steel Double Doors
Steel double doors can be incorporated into various architectural configurations to create dramatic entrances and functional transitions between spaces:
Grand Entry Sets: Combining steel double doors with matching sidelights and transoms creates an impressive entrance that maximises natural light while maintaining security. These configurations are particularly popular for Mediterranean and contemporary architectural styles across the Sunshine Coast.
Patio Access: Steel double doors leading to outdoor living spaces offer a seamless transition between interior and exterior environments. When designed with maximum glass area, these doors provide unobstructed views while maintaining thermal efficiency.
Room Dividers: Interior steel double doors with glass panels can separate living spaces while allowing light to flow through. This approach is increasingly popular in open-plan designs where occasional visual or acoustic separation is desired.
Courtyard Entries: For homes with internal courtyards, steel double doors create a dramatic frame for the outdoor space, turning it into a focal point visible from multiple interior areas.
Commercial Storefronts: Retail and hospitality businesses across Maroochydore, Noosa, and Brisbane are increasingly choosing steel double doors for their storefronts, combining security with an industrial-chic aesthetic that attracts customers.
Our team at G&M Craftsman Cabinets has extensive experience designing and installing these various configurations, ensuring that each project perfectly balances aesthetic impact with practical functionality.
Steel vs Timber & Fibreglass: The Durability Showdown
When comparing steel double doors to alternative materials like timber and fibreglass, the differences in durability and long-term performance become strikingly clear:
Corrosion Resistance:
Steel double doors using galvannealed steel (zinc-iron alloy coating) offer superior resistance to rust and corrosion compared to standard galvanised steel
Timber doors are vulnerable to moisture damage, particularly in Queensland's humid climate
Fibreglass offers good moisture resistance but can deteriorate under prolonged UV exposure
Structural Integrity:
Steel double doors maintain their shape regardless of climate conditions
Timber doors are prone to warping, swelling, and shrinking with humidity changes
Fibreglass doors can flex and distort under extreme temperature variations
Pest Resistance:
Steel double doors are completely impervious to termites and other wood-boring insects
Timber doors require regular treatment to prevent pest damage
Fibreglass doors resist insects but supporting frames may still be vulnerable
Maintenance Requirements:
Steel double doors typically need repainting every 7-10 years
Timber doors require sanding and resealing every 2-3 years in coastal environments
Fibreglass doors need recoating every 5-7 years to prevent UV degradation
Lifetime Cost Comparison: Over a 20-year period, the maintenance costs for timber doors can exceed the initial purchase price by 150%, while steel double doors typically incur maintenance costs of just 25-30% of their purchase price.
Acoustic Performance:
Steel double doors with proper insulation can achieve STC ratings of 31-33 dB
Solid timber doors typically range from 27-30 dB
Fibreglass doors generally offer 28-31 dB of sound reduction
Environmental Considerations:
Steel double doors are 100% recyclable at end of life
Sustainably sourced timber doors have low embodied energy but shorter lifespan
Fibreglass doors are difficult to recycle and typically end up in landfill
Bushfire Compliance:
Steel double doors can achieve the highest BAL ratings (BAL-FZ)
Timber doors are limited to lower BAL ratings unless heavily treated
Fibreglass doors typically achieve mid-range BAL ratings
At G&M Craftsman Cabinets, we believe in honest, transparent communication about material choices. While we appreciate the natural beauty of timber, for durability in Queensland's challenging climate, steel double doors simply offer superior long-term performance.
Installation, Costs & Ongoing Care
The installation of steel double doors represents a significant aspect of their overall performance and longevity. Professional installation ensures proper operation, weather sealing, and security—all crucial factors in maximising your investment.
The market for steel double doors spans a wide price range, typically from $678 for basic models up to $7,800 for premium, decorative options with custom features. This range reflects variations in:
Door size and thickness
Steel gauge and quality
Insulation type and R-value
Glass type and configuration
Hardware quality and complexity
Finish options and treatments
Fire rating requirements
When considering steel double doors, it's important to understand the difference between pre-hung units and slab doors:
Pre-hung Steel Double Doors:
Come complete with frame, hinges, and weatherstripping
Offer more consistent performance and easier installation
Ensure proper alignment and operation
Typically maintain manufacturer warranties
Slab Steel Double Doors:
Require separate frame and hardware
Need precise fitting to existing frames
Require more skilled installation
May have limited warranty coverage
At G&M Craftsman Cabinets, we follow a comprehensive 6-step process for every project, ensuring exceptional results from consultation through to ongoing maintenance:
BUDGETING & CONSULTING: We review architectural plans to ensure designs are achievable and budget-friendly, whether for home renovators, builders, or commercial developers.
PLANNING & DESIGN: Our trained consultants help plan your project and source the right hardware and finishes to match your goals, ensuring functionality before creation.
MANUFACTURE: As true craftsmen, our team applies knowledge passed down through generations. Everything is made in-house to the highest level of detail and quality.
INSTALLATION: Our tradespeople are skilled craftsmen who treat every project as their own, finishing each installation to perfection.
PROJECT MANAGEMENT: Our experienced team ensures related trades are booked and fully briefed, with clear communication keeping you informed of all project updates.
MAINTENANCE: From accidental damage to sticky doors, we can help with repairs and maintenance solutions to keep your joinery like new for years to come.
Professional vs DIY: Who Should Install Steel Double Doors?
While DIY installation might seem appealing from a cost perspective, there are compelling reasons to choose professional installation for steel double doors:
Warranty Protection: Most manufacturers' warranties for steel double doors are only valid when installed by qualified professionals. Improper installation can void these warranties, leaving you unprotected against potential defects.
Technical Complexity: Proper installation of steel double doors involves:
Precise frame squaring and anchoring
Correct flashing and weatherproofing
Proper hardware alignment and adjustment
Accurate hanging of heavy door leaves (often 45-90kg each)
Specialised tools and fasteners
Energy Compliance: For steel double doors to achieve their rated energy performance, installation must maintain the integrity of thermal breaks and weathersealing. Professional installers understand these critical details.
Security Considerations: The security of steel double doors depends greatly on proper installation of strike plates, deadbolts, and frame reinforcements. Professional installers know how to maximise these security features.
At G&M Craftsman Cabinets, our installation teams have extensive experience with steel double doors across residential and commercial applications throughout the Sunshine Coast. This expertise ensures your doors will function perfectly from day one and for years to come.
Budgeting For Your Project
When planning for steel double doors, several factors influence the overall project cost beyond just the doors themselves:
Labour Considerations:
Professional installation typically requires 4-8 hours depending on complexity
Existing door removal and disposal
Potential structural modifications to accommodate wider openings
Finishing work around the frame (interior and exterior)
Hardware Upgrades:
Premium handle sets and locksets
Multi-point locking systems
Electronic access controls
Automatic closers and operators
Finish Options:
Standard powder-coat finishes
Premium metallic or textured coatings
Custom colour matching
Protective clear coats for coastal environments
Special Requirements:
Fire-rating certification (typically adds 15-30% to base cost)
Acoustic performance improvements
Hurricane or cyclone ratings
Custom glass configurations
At G&M Craftsman Cabinets, we believe in transparent pricing and detailed quotes that clearly outline all aspects of your project. Our consultation process includes a thorough discussion of budget considerations, helping you make informed decisions that balance cost with long-term value.
Frequently Asked Questions about Steel Double Doors
How energy efficient are steel double doors in a Queensland summer?
Queensland summers can be brutally hot, which is why energy efficiency is a top concern for many homeowners. The good news is that steel double doors with proper insulation perform remarkably well in our climate.
Modern steel double doors incorporate clever thermal break technology that creates a barrier between the exterior and interior faces of the door. This significantly reduces heat transfer, keeping your air-conditioned interior cool even when the outside of the door is baking in direct sunlight.
For optimal performance in our subtropical climate, look for doors featuring polyurethane foam insulation with an R-value of at least 5.0 (though the best can reach up to 7.14). Pair this with thermally broken frames, Low-E glass for any glazed sections, and quality weatherstripping, and you've got a formidable barrier against the heat.
These features working together can potentially reduce your cooling costs by 10-15% compared to poorly insulated alternatives – a significant saving over the lifetime of your doors, especially with Queensland's rising energy prices.
At G&M Craftsman Cabinets, we specifically source steel double doors designed for Australian conditions, ensuring they'll stand up to our unique climate challenges while keeping your home comfortable year-round.
Can I retrofit steel double doors into an existing timber frame?
This is one of our most frequently asked questions, and the answer is: yes, it's possible – but there are important considerations to keep in mind.
The primary challenge is structural. Steel double doors are substantially heavier than timber alternatives, typically weighing between 45-90kg per leaf. Your existing timber frame may need significant reinforcement to handle this weight without sagging or warping over time. The header beam is particularly critical and often requires strengthening.
Dimensionally, there are also challenges. While steel door slabs can sometimes be custom-sized to fit existing openings, you'll likely need frame adapters to create a proper transition between materials. The threshold details also require careful planning to ensure proper weatherproofing.
In our experience at G&M Craftsman Cabinets, we find that complete frame replacement often provides more reliable long-term results, though it does increase the project scope. Pre-hung steel double door units with their own frames can replace the entire assembly, ensuring everything works together as a system.
We evaluate each retrofit situation individually, considering the condition of the existing frame, the specific requirements of your space, and your budget constraints. Sometimes a hybrid solution using steel doors with reinforced timber frames offers the best balance of performance and cost.
Are steel double doors available with bushfire BAL-40 compliance?
Absolutely. For properties in high-risk bushfire zones, steel double doors with BAL-40 compliance provide crucial protection while still offering attractive design options.
These specialised doors incorporate several features specifically designed for bushfire resistance. They're constructed with non-combustible steel throughout (typically using thicker 1.6mm minimum steel gauges), specialised fire-resistant glazing for any glass elements, and improved seals that expand when exposed to heat to block smoke and flames.
The core materials are also fire-resistant, and the frames include thermal barriers designed to maintain their integrity during a bushfire event. These features combine to create a door system that meets the stringent AS1530.8.1 standards required for BAL-40 certification.
It's worth noting that BAL-40 compliant steel double doors must be installed precisely according to manufacturer specifications to maintain their fire rating. The certification documentation should be kept for building compliance purposes, and regular inspection and maintenance are essential.
For Sunshine Coast homeowners in bushfire-prone areas, G&M Craftsman Cabinets can source and install fully compliant BAL-40 rated steel double doors that meet all regulatory requirements. We understand the importance of bushfire safety in Australia's climate, and we never compromise on these critical specifications.
Experience True Quality – Start Your Project Today
Throughout the Sunshine Coast, from Noosa to Buderim and Pelican Waters, our steel double door installations have transformed properties with their striking appearance and exceptional performance. Our portfolio showcases the versatility and impact these impressive entryways can create.
One of our standout projects in Buddina demonstrates how steel double doors can completely reinvent a property's character. For this beachside home, we installed custom-designed steel double doors with coastal-resistant finishes and full-height glazing that frames the ocean view while withstanding the harsh marine environment.
At G&M Craftsman Cabinets, we bring 100 years of combined experience to every project, ensuring that your steel double doors are not just installed—they're crafted to perfection. Our commitment to quality craftsmanship is evident in every detail, from the precision of our measurements to the flawless operation of the finished installation.
The decision to invest in steel double doors represents more than just a practical choice—it's a statement about the quality and character of your property. These impressive entryways offer best durability, security, and style that will serve you well for decades to come.
Ready to explore how steel double doors can transform your property? Contact our team today to arrange a consultation. We'll guide you through the options, help you select the perfect design, and ensure a flawless installation that exceeds your expectations.
Experience true quality – start your project today.