From Measure to Install: The Complete Window and Door Project Timeline

By Alex (COO) • • installation

A typical window or door replacement project takes 6 to 14 weeks from first measure to final inspection. Here is the real timeline contractors work with, including lead times that surprise clients.

Why Window and Door Projects Slip (And How to Avoid It)

Contractors hear it on nearly every job: "How long will this take?" Clients expect the same turnaround they would get buying a stock door at a home center. For custom or imported products, that expectation is off by a factor of three or four.

The biggest scheduling mistakes come from not knowing what happens before the install crew shows up. This guide breaks down every phase of a window or door replacement project so you can give clients an honest timeline and keep your job moving.

Phase 1: Site Survey and Measurement

Every replacement window project starts with accurate measurements. This phase is short in calendar time but critical in practice.

A proper site survey covers:

For a single-family home with 10 to 15 windows, the site survey takes 2 to 4 hours. Budget half a day for a contractor working a property with unusual conditions.

Common mistake: Measuring only the frame height and width and ignoring diagonals. Out-of-square openings require custom sizing or jamb extensions. A 1/4-inch diagonal discrepancy on a 48-inch window changes the order spec entirely.

Phase 2: Product Selection and Spec Confirmation

Once measurements are locked, product specification follows. This includes:

For imported products sourced through a platform like Buildtana, this phase also includes confirming: Spec confirmation often loops back on itself. Clients change their minds on hardware finishes, or a U-factor requirement rules out a preferred frame material. Build in 3 to 5 days of buffer here.

Phase 3: Permitting

Permit timelines are the most variable part of any window or door project. They depend on:

The International Building Code (IBC) and local amendments govern most US jurisdictions. In Florida, Miami-Dade County requires impact-rated products for any window within a certain distance of the coast. In California, Title 24 energy compliance may require NFRC-certified U-factors at or below specific thresholds.

Rule of thumb: Budget 2 to 4 weeks for permit processing in most jurisdictions. Budget 6 to 10 weeks if your project involves structural changes or is in a jurisdiction with known delays.

Phase 4: Manufacturing Lead Time

This is where the timeline diverges most dramatically between stock and custom products.

Stock Windows (US Distributor)

Standard stock vinyl and aluminum windows from major US manufacturers typically ship within 1 to 2 weeks from order. Distributor warehouses in most major metros carry common sizes (36x60, 48x36, etc.) in standard white and sometimes tan.

Custom Windows (Domestic Manufacturer)

Custom configurations — non-standard sizes, specific Low-E coatings, special hardware finishes — typically run 3 to 5 weeks from order to ship date from domestic factories.

Imported Windows and Doors (International Manufacturer)

Custom windows and doors from international manufacturers add meaningful lead time but can deliver 20 to 40 percent cost savings on equivalent quality. The trade-off is calendar time.

| Stage | Typical Duration | |---|---| | Order confirmation and deposit | 3-5 days | | Production | 3-6 weeks | | Quality inspection and crating | 3-5 days | | Ocean freight (Asia to US West Coast) | 3-4 weeks | | Ocean freight (Asia to US East Coast) | 5-6 weeks | | Customs clearance | 3-7 days | | Inland freight to distribution point | 3-7 days |

Total imported lead time: 8 to 14 weeks from order to site delivery is a realistic estimate. For clients on a tight schedule, this makes imported products better suited for planned renovations than emergency replacements.

Phase 5: Site Preparation

Before installation day, the site needs to be ready:

A common schedule slip happens when a window arrives damaged and a replacement must be reordered. Always inspect freight within 24 hours of delivery and document any visible damage on the bill of lading before signing.

Phase 6: Installation

Actual installation time varies by project size and complexity:

| Project | Installation Crew | Days | |---|---|---| | 6-10 standard vinyl replacement windows | 2-person crew | 1-2 days | | 15-20 standard vinyl replacement windows | 2-person crew | 2-3 days | | Full-frame window replacement (10 units) | 2-person crew | 3-4 days | | 1-2 exterior doors (entry or patio) | 2-person crew | 1-2 days | | 3-5 doors including pre-hanging | 2-person crew | 2-3 days |

Full-frame replacement takes longer than insert or replacement window installs because it involves removing the existing frame, flashing the opening, and installing a new frame with house wrap integration.

Installation in extreme temperatures (below 40 degrees F for many sealants, above 95 degrees F for some adhesives) may require specialized products or scheduling adjustments.

Phase 7: Flashing, Sealing, and Water Testing

After installation, flashing and exterior sealing must be completed before the crew leaves the job. This is not optional and should be included in the install contract.

Key steps:

Water testing (hose test) is recommended for any full-frame replacement and is required by many building inspectors in high-rain climates. A basic hose test involves running water across the window at 5 gallons per minute for 5 minutes while an assistant observes from inside.

Phase 8: Inspection

Many municipalities require a post-installation inspection for window and door work. Schedule this as early as the jurisdiction allows — inspectors often book 1 to 2 weeks out.

Inspectors typically check:

Once inspection passes, the project is complete.

Putting It Together: Total Project Timeline

| Scenario | Total Timeline | |---|---| | Stock windows, no permit, simple replacement | 1-2 weeks | | Custom domestic windows, permit required | 6-10 weeks | | Imported custom windows and doors, permit required | 10-16 weeks |

The 10 to 16 week timeline for imported custom products sounds long until you compare it to the typical kitchen or bathroom remodel schedule. By the time cabinet lead times, countertop fabrication, and tile work are done, the window timeline is rarely the critical path.

Planning Tips for Contractors

Communicate lead times early. The single most common client complaint is surprise at how long custom products take. Lead with the timeline, not the price.

Order long-lead items first. Always confirm product lead times before finalizing a project schedule. Door hardware, specialty glass, and imported components often have longer lead times than the main window or door units.

Build in buffer for weather. Exterior work has a weather dependency. Schedule exterior sealing and flashing during dry seasons when possible.

Use consolidated shipping for imported products. Consolidated containers (multiple projects in one shipment) reduce per-unit freight costs significantly and are worth the planning coordination for most contractors.

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Buildtana sources custom windows, doors, and cabinetry direct from international manufacturers with quality inspection before shipment. Contractors and homeowners can access these products at 20-40 percent below US retail pricing and receive technical support on specifications and lead time planning. Get started at /onboard

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