Steel Framing French Doors & Windows (Crittall Style) Build Budget

What a steel-frame door and window budget includes

A Crittall-style installation typically combines several trades and manufactured components. The visible steel grid is only one part of the project. A useful budget should identify each of the following items separately:

• Design development, field verification, shop drawings, and fabrication drawings
• Steel or steel-look frame assemblies, mullions, transoms, thresholds, and sill details
• Fixed windows, hinged French doors, sidelights, and any operable vents
• Double-pane insulated glass units, with tempered or other safety glazing where required
• Multi-point locks, cylinders, handles, hinges, strikes, keepers, and weather seals
• Custom powder coating, masking, color matching, and approved sample panels
• Delivery, unloading, staging, protection, and installation
• Framing changes, structural headers, waterproofing, interior and exterior finish repair, and paint
• Permit, inspection, engineering, and testing costs when required by the project or jurisdiction

Ask whether the quote is for supply only, delivery plus installation, or a complete opening renovation. Comparing a factory-direct product price with a full-service installed proposal can make two apparently similar bids look very different.

The main custom steel-frame cost drivers

Narrow sightlines usually require more precise fabrication than ordinary wood, vinyl, or standard aluminum assemblies. The fabricator must preserve the desired visual proportions while providing enough strength for the panels, hinges, locks, glass, and weather seals.

Start with the opening schedule. List every unit's rough opening, finished opening, overall frame size, panel count, swing direction, handing, fixed sections, transoms, and sidelights. A large opening divided into several narrow panels may require more mullions, hardware, alignment work, and installation time than a simpler opening with fewer panels.

Operable doors generally cost more to fabricate and install than fixed windows because they include hinges, latching hardware, perimeter seals, thresholds, drainage details, and field adjustment. French doors add another coordination issue: the active and inactive leaves must work together, and the astragal, lock points, and meeting stile must be specified before fabrication.

Existing conditions also matter. A new opening in a load-bearing wall may need structural design and temporary support. Replacing an existing window in the same opening may avoid some framing work, but it can still require sill repair, water management, interior trim removal, or masonry modification.

Glass, thermal performance, and safety glazing

Double-pane glass consists of two lites separated by a sealed insulating space. The final insulating performance depends on the glass coatings, spacer, gas fill, edge conditions, frame system, and overall assembly. Request the performance information for the complete window or door where available, rather than judging the project by glass type alone.

Tempered glass is heat-treated so it breaks into smaller particles than ordinary annealed glass. Safety-glazing requirements depend on location, size, proximity to doors, walking surfaces, and other conditions established by the applicable building rules. Tempered glass may be appropriate or required in some locations, but do not assume every pane needs the same treatment. Confirm the design with the local building department and the glazing manufacturer.

For a luxury project, ask the supplier to identify the insulated glass unit thickness, visible light and solar-control characteristics, spacer type, warranty, and compatibility with the steel frame. Also confirm whether the selected frame accepts the intended glass thickness without forcing a last-minute change to the sightline or glazing bead.

Multi-point locking hardware and door operation

A multi-point lock secures a door at more than one location along the stile, commonly using a central lock with additional upper or lower engagement points. The exact arrangement varies by hardware system and door manufacturer. It should be priced as a coordinated package, not treated as a generic handle upgrade.

Specify the operating sequence for the French doors. Some systems require the handle to be lifted before the auxiliary points engage. Others use different inactive-leaf hardware or concealed rods. Confirm that the selected arrangement is practical for daily use, accessible from both sides where appropriate, and compatible with the threshold and weather seals.

Include these hardware decisions in the written proposal:

• Active and inactive door leaves
• Interior and exterior handles, cylinders, and finishes
• Locking points and strike configuration
• Hinge type, adjustment range, and exposed or concealed appearance
• Threshold height, drainage, and accessibility considerations
• Keyed, thumb-turn, smart-lock, or access-control compatibility
• Replacement parts and service responsibility

Hardware finish is not automatically identical to powder-coated steel. If the design calls for a consistent appearance, approve physical samples of the frame finish and hardware together.

Custom powder coating and finish selection

Powder coating applies a dry finish to prepared metal and cures it with heat. It can provide a durable, uniform appearance, but the result depends on surface preparation, pretreatment, coating chemistry, cure control, handling, and exposure conditions.

Custom color work may involve a minimum batch charge, color matching, special texture, multiple colors, masking, or additional handling. Ask whether the frame will be coated before assembly, whether concealed areas receive the same treatment, and how field cuts or touch-ups are handled. A touch-up pen is not the same as factory-applied coating, especially at exposed thresholds, corners, and installation damage.

Approve a sample before production. The perceived color can change with sheen, texture, daylight, interior lighting, and nearby materials. Record the color identifier, gloss or texture, approved sample, and expectations for acceptable variation in the contract.

Installation, structural work, and finish repair

Installation is a major part of the budget because narrow-sightline assemblies often leave little room for error. The installer must verify the opening, set the unit plumb and square, protect the glass and finish, anchor the frame correctly, adjust the doors, and complete the water and air-control details.

Before ordering, determine who is responsible for the following:

1. Confirming final field dimensions after demolition or rough framing
2. Checking whether the opening is load-bearing and whether a header or other structural work is needed
3. Preparing the sill, pan, flashing, waterproofing, and drainage path
4. Coordinating masonry, siding, stucco, drywall, plaster, flooring, and trim repairs
5. Protecting finished floors and adjacent surfaces during delivery and installation
6. Testing door operation, lock engagement, weather seals, and glass condition at turnover

For large glazed openings, framing and support can affect the budget before the door or window is even delivered. If your design is part of a wider opening, compare the structural scope with the considerations discussed in accordion glass door framing and beam sizing, while recognizing that a steel French-door system has different loads and installation details.

If the project replaces an existing unit, do not assume an insert installation will suit a narrow-sightline design. Insert windows leave the existing frame in place and may reduce the visible opening. The proposed system and the existing opening should be evaluated by the installer before the budget is finalized.

How to request comparable bids

1. Prepare an opening schedule. Identify dimensions, panel types, fixed and operable sections, swing directions, transoms, sidelights, and desired sightlines.
2. Provide site information. Include photographs, wall construction, access limitations, floor elevations, exterior cladding, interior finishes, and demolition expectations.
3. Define the performance package. State that you are considering double-pane insulated glass, tempered safety glazing where applicable, and a specified frame system or equivalent subject to review.
4. Specify the hardware. List multi-point locking, handles, cylinders, hinges, threshold preferences, and any smart-access requirements.
5. Specify the finish. Request a custom powder-coated finish with a physical sample and written color and texture identification.
6. Require line-item pricing. Separate design, fabrication, glass, hardware, finish, delivery, installation, structural work, finish repair, permits, taxes, and exclusions.
7. Compare warranty and service. Identify who handles adjustment, failed insulated glass, damaged coating, lock problems, and future replacement parts.

For a second comparison, a residential project that uses a storefront-type product may have a different sightline, thermal profile, threshold, and hardware package. A commercial glass storefront door comparison can help clarify why a visually similar door is not necessarily an equivalent substitute for a thermally improved custom steel assembly.

Budget protection checklist

• Do not approve fabrication until final field measurements are documented.
• Confirm which dimensions are rough openings and which are finished frame sizes.
• Require shop drawings showing sightlines, mullions, panel handing, thresholds, and hardware.
• Confirm glass safety locations with the local authority having jurisdiction and the supplier.
• Verify that the frame, glass, hardware, and finish warranties are identified separately.
• Ask what happens if the opening is out of square or differs from the approved drawings.
• Clarify whether delivery includes unloading, craning, interior transport, and protection.
• Include allowances for concealed damage, framing repair, waterproofing, trim, and paint only when those items cannot yet be measured.

Permit and inspection requirements vary by municipality and project scope. The local building department or authority having jurisdiction can confirm whether the work needs a building, structural, or other permit. Product-specific performance and installation requirements should come from the manufacturer and approved shop drawings.

Frequently asked questions

Are Crittall-style windows always made from steel?

No. The phrase can describe an appearance rather than a material. Steel, aluminum, and composite systems can create a similar divided-light look, but their sightlines, thermal performance, hardware, maintenance, and structural behavior differ. Confirm the material and system in the proposal.

Why are steel French doors more expensive than standard French doors?

They are commonly custom-fabricated and may require narrow profiles, heavier glass, specialized hardware, custom finishing, shop drawings, and more precise installation. The actual premium depends on the system, opening, finish, and site conditions.

Is double-pane tempered glass required for every unit?

Double-pane construction and tempered safety glazing address different issues. Double-pane glass provides an insulating assembly, while tempered glass is a safety-glazing treatment. Whether safety glazing is required depends on the location and applicable local rules. Verify the design with the building department and supplier.

Can a multi-point lock be added after the doors are fabricated?

Sometimes, but it depends on the frame, stile, lock preparation, and hardware manufacturer. Specify the complete locking system before fabrication. Retrofitting can affect the sightline, finish, warranty, and door alignment.

What should a luxury steel door and window quote show?

It should show the opening schedule, frame material and profile, glass construction, safety-glazing assumptions, hardware, powder-coat finish, delivery, installation, structural and finish work, permits or exclusions, warranty, and the process for field changes. A line-item proposal is easier to compare than a single installed allowance.