The short answer: measure the opening and specify the complete system
What should you check before replacing a front door with an impact-rated door in Southwest Florida? Verify the actual masonry or framed opening, wall depth, threshold, swing, clearances, sidelites or transom, hardware, design pressures and current product approval before ordering. The label on the existing door slab is not enough.
Most exterior entry-door replacements are ordered as a complete prehung assembly because the frame, door panel, hinges, threshold, weather seals and approved anchorage must work together. A field measurement should also record surrounding stucco, interior trim, flooring and water-management conditions so the installation scope is clear.
1. Decide whether the project is size-for-size or changes the opening
A size-for-size replacement keeps the structural opening substantially unchanged. Widening, raising, narrowing or creating an opening is a different scope that can involve structural work, new plans and a different permit path. Adding or removing sidelites is not merely a door-style choice if it changes the opening or supporting construction.
Define this before shopping. Record whether the existing unit is a single door, double door, door with one or two sidelites, or a door-and-transom combination. If the opening will change, coordinate the design and permit documents before a custom unit is released for fabrication.
2. Measure the rough opening, not only the door slab
A nominal 36-inch door description usually refers to the slab, not every dimension required to order the assembly. The installer needs the available opening width and height, existing frame configuration, threshold elevation and room for the approved anchorage and perimeter seal. Decorative trim can conceal the true edge of the frame.
Measure width near the top, middle and bottom and height at more than one point, but treat homeowner measurements as planning information. Final ordering dimensions should come from the contractor or supplier responsible for the fit. Removing limited trim may be necessary to confirm what is behind it.
3. Check whether the opening is square, plumb and level
Older openings may be wider on one side, out of plumb or supported by a threshold that is no longer level. A replacement selected from one width and one height can fit poorly even when the numbers appear correct. Diagonal measurements and level checks help reveal a distorted opening.
Significant movement, cracking, damaged wood bucks or deteriorated concrete should be evaluated before installation; foam or trim cannot correct a substrate problem.
4. Record wall depth, bucks, stucco and interior finishes
Southwest Florida homes may have concrete masonry walls, framed walls or additions with different assemblies. Frame depth and attachment details must suit the actual wall. The installer should identify any existing wood buck, concrete return, stucco edge, drywall return, casing and exterior trim that will remain or be replaced.
Clarify the frame position and responsibility for stucco, paint, drywall, casing and floor-transition finishes.
5. Confirm the swing, handing and operating clearance
Document whether the existing door swings inward or outward, which side is hinged when viewed from the agreed direction, and where the handle lands. Then test the proposed swing against furniture, switches, alarm contacts, porch columns, planters, screen doors and the path people use every day.
Put the swing and handing on the proposal or shop drawing because manufacturers and viewers can describe them differently.
6. Measure landing, threshold and finished-floor relationships
The new threshold must coordinate with the exterior landing and interior finished floor. Tile, wood, luxury vinyl or a future flooring project can change the transition. A threshold that sits too high, too low or at the wrong position can create an awkward step, interfere with flooring or complicate water management.
Record exterior slope, the condition below the old threshold and interior finish height. Investigate existing water entry instead of assuming a new door will correct drainage or envelope problems.
7. Treat sidelites, transoms and double doors as one coordinated assembly
Sidelites and transoms change the overall size, glass area, mullions and anchorage of the entrance system. Double doors add meeting-stile, locking and threshold details. Each configuration must match the current approval documents and the project-specific opening rather than being assembled from unrelated components in the field.
Confirm which panels operate, the direction of any active and inactive leaves, glass privacy, grille pattern and finish. Ask for an elevation that labels each component. The product numbers and installation instructions should cover the complete configuration being ordered.
8. Select glass and privacy with the actual entry exposure in mind
An impact-rated glazed door can bring daylight into a dark foyer, but the amount and position of glass affect privacy. Consider the view from the street, neighboring homes and the evening interior when lights are on. Samples are more useful than judging tint, texture or reflectivity from a small online image.
All exterior doors offered by Model Construction Corp are impact-rated products. Impact resistance does not make every glass pattern, frame finish or hardware option interchangeable. Verify that the exact configuration appears within the applicable approval and that aesthetic selections are documented before ordering.
9. Match the product approval and design pressures to the address
Florida's Product Approval search allows users to review products by FL number, manufacturer, code version, impact resistance and design pressure. The approval is not just a marketing certificate. It identifies covered models, sizes, configurations, substrates, fasteners, edge distances and other installation limitations.
The selected door must be suitable for the pressures and conditions established for the specific project. Do not choose from an FL number alone or assume that every size in a product series has identical limits. The permit package and installation should use the exact approval information applicable to the ordered unit.
10. Specify hardware, security and daily operation before fabrication
Choose handle style, finish, keyed access, deadbolt or approved multipoint hardware as part of the door system. Confirm backset, bore preparation and compatibility with the manufacturer's tested configuration. Homeowners should also identify alarm sensors, smart locks or doorbells that require separate coordination.
A heavy impact-rated entry unit should operate smoothly when installed correctly, but operation depends on the full assembly and alignment. Ask how active and inactive leaves secure, how the threshold adjusts if applicable and what maintenance the manufacturer requires. Do not drill or modify an approved assembly casually after installation.
11. Confirm permit documents, installation details and inspections
Lee County's exterior-openings guide states that a permit is required to install, alter or replace size-for-size windows and doors in its jurisdiction, and that a non-size-for-size change follows an alteration permit path. The guide also calls for product approvals, an opening plan and applicable pressure information. Other cities and counties can use different applications and procedures.
Verify jurisdiction by parcel rather than mailing address. Naples, Bonita Springs and Estero-area properties may not all use the same permitting authority. Before work starts, confirm who submits the permit, which approved documents stay onsite, which inspections apply and who closes the permit after approval.
What a complete front-door proposal should identify
A useful proposal connects the selected product to the opening and the finished result. Compare scope rather than comparing one total against another.
- Exact impact-rated door series, configuration, size and finish
- Single, double, sidelite and transom components shown on an elevation
- Inswing or outswing and clearly defined handing
- Glass type, privacy pattern and grille details
- Frame, threshold, hinges, lock preparation and included hardware
- Applicable product approval and project design-pressure method
- Removal, disposal and protection of adjacent areas
- Anchorage, perimeter sealing and water-management scope
- Interior casing, drywall, stucco, paint and flooring responsibilities
- Permit preparation, inspections and closeout responsibilities
- Lead-time assumptions and how field conditions or changes are handled
Prepare the home for installation day
Clear furniture, rugs, wall décor and fragile items from both sides of the entrance. Provide an alternate path for occupants and pets because the primary opening will be unavailable during portions of the work. Discuss dust protection, debris handling, weather planning and security if the work extends beyond one day.
At completion, operate every lock, inspect the seal and finish, and retain the permit, approval and warranty documents with the home's records.
Local considerations in Naples, Bonita Springs and Estero
Coastal exposure, covered entries, direct rain, existing stucco details and community design standards vary widely across Collier and Lee counties. Condominium or homeowners' associations may also require an exterior appearance review separate from the building permit. Association approval does not replace government review, and a permit does not automatically satisfy private rules.
Confirm jurisdiction and community requirements early; the parcel and scope determine the correct review path.
Plan the opening before ordering the door
A front-door replacement succeeds when the impact-rated product, opening, wall, threshold, hardware, finishes and approved installation are treated as one project. Careful field verification costs far less than discovering after delivery that the frame depth, handing or sidelite configuration is wrong.
Model Construction Corp provides impact window and door replacement and broader construction services across Southwest Florida. If you are planning an impact front door in Naples, Bonita Springs, Estero or a nearby community, request a free in-home estimate to review the opening, product options and project scope.
Official sources
Use these primary sources to verify current requirements and local guidance for the property.
Quick answers
Frequently asked questions
Can I order an impact front door using the size printed on my old door?
No. That size may describe only the slab. The complete order should be based on field-verified opening dimensions, frame depth, threshold, swing, sidelites or transom and the approved installation.
Should I replace only the door slab or the entire frame?
Impact entry replacements are commonly planned as complete prehung systems so the panel, frame, hinges, threshold, seals and anchorage match. The existing conditions and product approval determine the appropriate scope.
Can I change a single front door to a door with sidelites?
Possibly, but changing the opening can require structural design, different plans and a different permit path. Confirm the available wall, required configuration and approvals before ordering.
Does an impact front door need a Florida Product Approval?
The permitted product and installation documentation must demonstrate compliance for the project. Search the current approval by exact product and verify the configuration, size, substrate, anchorage and design-pressure limits.
Do I need a permit to replace an exterior door in Southwest Florida?
Typically yes, but the permit type and documents depend on the scope and jurisdiction. Lee County identifies an exterior-openings permit for size-for-size door replacement and an alteration path when the opening changes; other authorities may differ.
How long does an impact front door replacement take?
The onsite work may be relatively short, but the full schedule depends on field verification, product selection, fabrication, permit review, finish repairs and inspections. Ask for separate ordering and installation expectations for the exact project.