The Short Answer

Do not describe every Therma-Tru product as having the same “lifetime warranty.” Coverage can depend on the door material, collection, component, finish, purchaser classification, purchase date, installation location, and any applicable warranty rider. The complete written warranty—not the sales shorthand—controls.

At minimum, retain the proposal, final invoice, product numbers, purchase and installation dates, homeowner information, labels and identifying marks, opening measurements, before-and-after photos, finish records, installation photos, care documents, and homeowner handoff acknowledgment. Register the product through Therma-Tru’s current registration process and provide the homeowner with a complete copy of the record.

Why “Lifetime Warranty” Is an Incomplete Answer

The word lifetime sounds simple, but limited warranties define whose lifetime, which products, which properties, which conditions, and which remedies apply. A residential owner-occupant may be treated differently from a commercial or multi-resident purchaser. Transferability may depend on the warranty version or product program. Finish coverage may come from a separate rider rather than the door-system warranty.

The contractor should explain three things clearly:

• Coverage: What product or component nonconformities the document addresses.
• Conditions and exclusions: What installation, finishing, maintenance, environment, alterations, or other circumstances can limit coverage.
• Remedy: What Therma-Tru may provide if an eligible claim is approved—and which labor or related costs may remain outside the remedy.

A warranty is not a promise that the product will never need adjustment or maintenance. It is a written allocation of responsibilities and remedies under defined conditions.

Identify Which Documents Apply

Therma-Tru’s current warranty portal lists multiple documents, including its limited door-system warranties and separate materials for finishes, composite frames, flush-glazed products, retractable screens, and Tru-Defense configurations. Do not save only the first PDF that appears in a search result.

Document the Exact Door System

A door slab and a complete door system are not the same thing. A prehung entry may include the slab, glass, jambs, mullions, brickmould, sill, weatherstrip, corner pads, sweep, hinges, astragal, hardware preparation, and other components. Warranty treatment can depend on whether parts are genuine Therma-Tru components and whether a rider requires a particular system configuration.

Build a product schedule that records:

• Therma-Tru collection, door style, material, size, handing, and configuration.
• Door slab product number and any order or production identifiers.
• Glass design, size, privacy level, and identifying watermark.
• Sidelites, transom, mullions, astragal, frame, brickmould, and sill.
• Hinges, weatherstrip, sweep, corner pads, rain protection, and strike.
• Factory or distributor finish name, color, and applicator label.
• Lock preparation and compatible single- or multi-point hardware.
• Any rider-specific components required for enhanced eligibility.

Photograph labels before they are concealed or discarded. Therma-Tru’s current warranty-request guidance specifically asks for pictures showing the Therma-Tru watermark on glass and/or the Therma-Tru stamp on hinges when applicable.

Proof of Purchase Must Connect the Product to the Property

A generic credit-card receipt is weak documentation. The final invoice should make it possible to connect the purchaser, installation address, seller, date, and product configuration. If the invoice uses internal abbreviations, attach the detailed order acknowledgment or product schedule.

Keep these records together:

1. Signed proposal and approved change orders.
2. Supplier order acknowledgment and final product schedule.
3. Paid invoice showing purchase date and customer information.
4. Delivery ticket and receiving inspection photos.
5. Installation date and substantial-completion record.
6. Warranty and rider versions applicable to that purchase.

Therma-Tru’s warranty portal says claimants should be prepared to provide proof of purchase. Organizing that evidence at closeout avoids reconstructing it years later after employees, software, or suppliers have changed.

Registration Helps—but Does Not Replace the Project File

Therma-Tru provides an online registration form for purchases in case a future claim is required. Complete the registration with accurate product and homeowner information, then save confirmation evidence with the project.

Registration should supplement—not replace—the invoice, labels, photographs, installation records, and care documents. A registration entry may help identify the purchase, but a future claim can still require proof of purchase, product identification, photos of the issue, and relevant measurements.

Finish Documentation Is Its Own File

Finish questions generate avoidable disputes because the door-system warranty, a factory or distributor finish rider, and field-applied paint or stain may be governed by different documents. Record exactly who finished each surface, with which product, on what date, and under what conditions.

• Photograph the slab and components before finishing.
• Record primer, paint, stain, topcoat, manufacturer, product line, color, and batch or lot information when available.
• Save receipts and application instructions.
• Record preparation, number of coats, application dates, temperature, and responsible applicator.
• Photograph the exterior and interior faces plus required top, bottom, and side edges.
• Retain any factory or distributor finish label and care packet.
• Give the homeowner maintenance and touch-up requirements in writing.

Therma-Tru’s warranty documents include finishing timelines and exclusions for improper or untimely finishing. The exact requirements vary with the product and exposed materials, so use the current instructions. Our guide to finishing a fiberglass front door explains the project-planning differences between paint and stain.

Installation Photos Protect Everyone

Many warranty exclusions distinguish manufacturing nonconformities from damage related to handling, assembly, installation, flashing, caulking, building movement, maintenance, environmental exposure, or third-party materials. That makes concealed-stage photographs valuable.

Create a consistent photo sequence:

• Existing opening and visible pre-existing damage.
• Rough-opening dimensions, framing condition, and sill support.
• Weather-resistive barrier, sill pan, flashing, and sealant details.
• Shim locations and structural fasteners before trim conceals them.
• Hinge and strike reinforcement.
• Even reveals around the slab and full lock engagement.
• Weatherstrip, corner pads, sweep, sill adjustment, and water-management details.
• Interior and exterior finish, labels, glass watermark, and completed elevation.

Use the current manufacturer instructions and a disciplined entry-door installation checklist. Photos do not rescue incorrect work, but they can demonstrate what was installed and how.

Record Site Exposure and Third-Party Products

The entry’s environment may affect finish, maintenance, and warranty analysis. Photograph the entire elevation and note direction, overhang, direct sun, wind-driven rain, nearby irrigation, coastal proximity when relevant, and whether a storm door is present.

Also identify every third-party component that touches the system: frame products, hardware, sealants, coatings, films, storm doors, trim, and accessories. A non-Therma-Tru component may not automatically cancel all coverage, but Therma-Tru generally does not warrant another manufacturer’s product or damage attributed to it. Avoid telling the homeowner that mixing components is either harmless or universally disqualifying; read the applicable language.

Maintenance and Homeowner Handoff Matter

The contractor controls installation, but the homeowner controls long-term cleaning, inspection, adjustment, finish care, and timely reporting. Provide a simple handoff packet instead of leaving manuals in a cardboard box.

What the Warranty May Not Pay For

Homeowners often assume an approved product claim will automatically cover removal, installation, refinishing, siding, trim, flooring, travel, shipping, and every related expense. Limited warranties and riders frequently restrict the remedy and exclude some labor, access, finishing, consequential, or third-party costs.

Do not interpret coverage on Therma-Tru’s behalf. Instead, show the homeowner the remedy and exclusion sections of the controlling document. Keep your own workmanship warranty separate and written. If a service call involves both an alleged product condition and installation work, document the observed facts before deciding responsibility.

Build a Claim-Ready Evidence Package

Therma-Tru’s current warranty-request guidance asks for proof of purchase, clear pictures showing the issue, pictures of identifying marks such as the glass watermark or hinge stamp, and relevant sizing information. Contractors can make the submission easier by organizing the evidence before contacting the seller or manufacturer.

1. Record when the condition was first observed and whether it is changing.
2. Take wide photos of the complete entry and close photos of the concern.
3. Photograph product identification without altering or removing labels.
4. Measure the slab, frame, glass, reveals, or affected area as relevant.
5. Describe operation factually—avoid diagnosing before inspection.
6. Attach proof of purchase, product schedule, installation photos, and finish records.
7. Document maintenance, prior service, storm-door use, and site exposure.
8. Submit through the appropriate seller or current Therma-Tru claim channel and retain confirmation.

Do not disassemble, refinish, discard, or replace an allegedly defective component before receiving direction if doing so could destroy evidence or affect claim review. Take reasonable steps to prevent additional damage while preserving the condition for evaluation.

The Contractor’s Closeout Folder

Use one consistent folder structure for every Therma-Tru project:

• 01 Contract: Proposal, selections, approvals, and change orders.
• 02 Product: Order acknowledgment, schedule, labels, and receiving inspection.
• 03 Installation: Instructions, measurements, concealed-stage photos, and final checklist.
• 04 Finish: Products, receipts, application record, photos, and care instructions.
• 05 Warranty: Applicable warranty, riders, registration, and transfer information.
• 06 Handoff: Homeowner packet, demonstration checklist, acceptance, and contact details.
• 07 Service: Requests, inspection notes, photos, adjustments, and claim correspondence.

Name files with the project address, date, and subject. “IMG_4837” is not a service record. “2026-08-19_3602-N-Harrison_strike-fasteners” can be found and understood years later.

Common Warranty Documentation Mistakes

• Calling every Therma-Tru product “lifetime” without identifying the controlling warranty.
• Failing to distinguish the door system from the finish or an optional warranty rider.
• Keeping a proposal but no final paid invoice or detailed product schedule.
• Discarding labels before photographing them.
• Taking only beauty photos after every fastening and flashing detail is concealed.
• Leaving field-applied finish products, dates, and applicators undocumented.
• Assuming registration replaces proof of purchase and claim evidence.
• Promising labor coverage that the written warranty does not provide.
• Waiting until a claim to search for the applicable warranty version.

The Bottom Line

The best Therma-Tru warranty file is built before there is a problem. Identify the complete door system, retain the correct warranty and riders, prove the purchase, photograph installation and identification marks, document finishing, complete registration, and give the homeowner clear maintenance information.

For Davenport and Bettendorf contractors, this discipline does more than support a future claim. It reduces callbacks, clarifies responsibility, improves homeowner confidence, and makes service faster when the person answering the phone was not present at the original installation.

Frequently Asked Questions