What is a workmanship warranty?
A workmanship warranty is a promise that labor will be performed according to an agreed or legally applicable standard. It may apply to construction, installation, remodeling, repair, replacement, or servicing.
The responsible provider may be a:
- General contractor
- Builder
- Subcontractor
- Installer
- Repair company
- Dealer
- Service technician
- Home-improvement company
The warranty may be expressly written in the contract. Depending on applicable state law and the type of project, separate implied, statutory, licensing, habitability, or code-related duties may also exist.
What can a workmanship warranty cover?
Coverage depends on the contract, but it may include correction of labor-related deficiencies.
Possible covered problems include:
- Incorrect installation
- Failure to follow plans or specifications
- Improper fastening or attachment
- Misalignment or poor fit
- Inadequate sealing or flashing
- Incomplete connections
- Improper preparation of the work area
- Failure to follow stated manufacturer instructions
- Incomplete or omitted work
- Defective corrective repairs
A workmanship warranty may require the original contractor to repair or redo the work. It does not always pay cash, reimburse another contractor, or cover all resulting damage.
Common workmanship warranty settings
Roofing
Flashing, fastening, underlayment, penetrations, sealing, drainage, and installation according to the roofing system requirements.
Flooring
Subfloor preparation, expansion spacing, adhesive use, alignment, transitions, moisture review, and fastening.
HVAC
Equipment installation, duct connections, drainage, wiring, controls, refrigerant procedures, and commissioning.
Plumbing
Connections, supports, sealing, slope, testing, fixture installation, and leak prevention.
Electrical work
Connections, circuit installation, grounding, protection, labeling, equipment placement, and permitted work.
Remodeling
Framing, drywall, cabinetry, tile, paint, trim, waterproofing, finish quality, and conformity with the scope.
What standard determines acceptable workmanship?
The standard may come from several sources. A claim should identify the clearest applicable benchmark rather than relying only on the phrase poor workmanship.
The contract
The signed contract, proposal, scope of work, drawings, specifications, change orders, and approved selections can establish what the contractor agreed to provide.
Manufacturer instructions
Installation instructions may specify preparation, fastening, clearances, adhesives, sealants, ventilation, testing, compatible materials, and other requirements.
Codes and permits
Building, electrical, plumbing, mechanical, fire, energy, and other codes may apply. A code issue can be important evidence, although a passed inspection does not necessarily resolve every contractual or workmanship dispute.
Approved samples and plans
Samples, drawings, mockups, models, and finish schedules may establish expectations for appearance, alignment, dimensions, material, and construction.
Trade practices
Industry standards and reasonable trade practices may help evaluate work when the contract does not specify every detail. The relevant standard can vary by location, product, trade, and project.
Workmanship warranty vs materials warranty
Workmanship and material defects can look similar but involve different responsibilities.
| Question | Workmanship warranty | Materials warranty |
|---|---|---|
| Primary concern | Quality of installation, construction, or repair | Quality or performance of a product or material |
| Common provider | Contractor, builder, installer, or repairer | Manufacturer, supplier, or seller |
| Example | Roofing material was fastened incorrectly | Roofing material failed despite correct installation |
| Common remedy | Correct or redo labor | Replace, repair, or credit the product |
| Removal and reinstallation | May be covered when labor caused the problem | May be excluded by the manufacturer warranty |
A claim may involve both. Defective material may be installed correctly, or acceptable material may fail because it was installed incorrectly.
An independent inspection may be necessary when the contractor and manufacturer blame one another.
Workmanship warranty vs manufacturer warranty
A workmanship warranty generally comes from the company performing the labor. A manufacturer warranty generally comes from the company producing or branding the installed product.
For example, a window manufacturer may cover defects in the window, while the installer covers alignment, fastening, flashing, sealing, and integration with the wall.
Review:
- The contractor's written warranty
- The manufacturer's warranty
- Installation instructions
- Authorized-installer requirements
- Labor and removal exclusions
- Consequential-damage exclusions
Manufacturer coverage may be denied when installation caused the failure. Contractor coverage may be denied when the installer claims that the product itself was defective.
How long does a workmanship warranty last?
A written workmanship warranty may last for a fixed period beginning on completion, substantial completion, final inspection, closing, delivery, installation, or another stated date.
Common questions include:
- What event starts the warranty?
- Does each repair receive a new period?
- Must the problem be discovered or reported before expiration?
- Does the warranty transfer to a new owner?
- Does seasonal work receive a delayed review?
- Are specific systems covered for different periods?
The written warranty term is not necessarily the only deadline. Statutes of limitation, statutes of repose, contractual notice periods, licensing rules, and statutory warranties may use different time limits.
Common workmanship warranty exclusions
Workmanship warranties commonly exclude problems that were not caused by the original provider's labor.
Possible exclusions include:
- Defective materials or products
- Design or engineering supplied by others
- Normal wear and deterioration
- Owner misuse or lack of maintenance
- Movement, settlement, or environmental conditions
- Storm, flood, fire, impact, pests, or other outside events
- Alterations by the owner or another contractor
- Unauthorized repairs
- Cosmetic variation within stated tolerances
- Work outside the original scope
An exclusion should be connected to the actual cause. The presence of an outside event does not necessarily prove that it caused the problem.
What may not be included in corrective work?
A warranty may promise correction of the defective labor without covering every related expense.
Potentially excluded costs include:
- Opening walls, ceilings, floors, or finished surfaces
- Moving furniture or equipment
- Painting and refinishing
- Landscaping restoration
- Temporary accommodation
- Lost income or business interruption
- Upgrades beyond the original scope
- Work performed without prior authorization
Ask the contractor to identify the complete proposed repair, including access, removal, replacement, testing, finishing, cleanup, permits, and restoration.
How to prove defective workmanship
A strong record compares the completed work with a specific applicable standard.
Preserve the agreement
- Signed contract
- Proposal and scope of work
- Plans and specifications
- Change orders
- Approved samples and selections
- Written warranty
- Payment and completion records
Document the work
- Before, during, and after photographs
- Video of leaks, movement, noise, or operation
- Measurements
- Dates and weather conditions
- Serial numbers and product labels
- Damaged surrounding property
Identify the standard
- Contract provision
- Drawing or specification
- Manufacturer instruction
- Permit or inspection requirement
- Applicable code
- Recognized trade standard
Consider an independent assessment
A qualified inspector, engineer, architect, consultant, trade professional, or other expert may help identify the cause and corrective scope. The appropriate professional depends on the work and jurisdiction.
What if the problem causes ongoing damage?
Take reasonable steps to protect people and property. Do not allow avoidable damage to continue solely to preserve warranty evidence.
For urgent conditions:
- Address immediate safety risks.
- Stop active water, electrical, gas, fire, or structural danger.
- Photograph and record the condition when safe.
- Notify the contractor promptly.
- Keep emergency invoices and removed materials.
- Explain why immediate work was necessary.
Serious structural, electrical, gas, fire, or health conditions should be reviewed by an appropriate qualified professional or public authority.
How to make a workmanship warranty claim
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Locate the contract and warranty
Identify coverage, duration, exclusions, notice requirements, transferability, inspection rights, and remedies.
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Describe the condition precisely
Explain where the problem appears, when it began, how it affects the work, and whether damage is continuing.
-
Identify the applicable standard
Cite the scope, plan, specification, manufacturer instruction, code requirement, sample, or trade standard involved.
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Preserve evidence
Keep photographs, video, invoices, communications, inspection records, product labels, and damaged materials.
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Provide written notice
Notify the contractor using the contractually required method and retain proof of delivery.
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Allow reasonable inspection
Provide access while documenting who attended, what was observed, and whether destructive testing is proposed.
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Request a written corrective plan
Ask for the cause, proposed repair, materials, responsible trades, schedule, permits, testing, restoration, and warranty for the corrective work.
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Document completion
Inspect the correction, keep photographs and sign-off records, and confirm whether a new warranty period applies.
Sample workmanship warranty notice structure
Subject: Workmanship warranty notice for [project or address]
Your company completed [scope of work] on or about [completion date]. The agreement or warranty states [quote or summarize the applicable workmanship promise].
On [discovery date], I observed [specific condition]. The condition appears inconsistent with [contract provision, specification, manufacturer instruction, code, approved sample, or stated standard].
Attached are photographs, the agreement, relevant instructions, and other supporting records. Please confirm an inspection date and provide your proposed corrective plan in writing by [reasonable date].
Why workmanship warranty claims are denied
A contractor may deny a claim because:
- The written term expired.
- The problem was reported too late.
- The condition is attributed to defective material.
- The contractor says maintenance was inadequate.
- Another company changed the work.
- The issue is considered cosmetic or within tolerance.
- The work was outside the original scope.
- An external event caused the damage.
- The owner did not permit inspection or correction.
- The requested expense is excluded.
Request the denial in writing. Ask the contractor to identify the exact warranty provision and evidence supporting the stated cause.
What if the contractor refuses to fix the work?
Preserve the complete record and review the contract's dispute procedure before hiring another contractor for nonemergency work.
Possible steps may include:
- Written escalation to the contractor or company owner
- An independent inspection
- A second written opportunity to inspect or correct
- A claim under a bond, insurance policy, or warranty program
- A complaint to an applicable licensing authority
- Mediation or arbitration
- A consumer-protection complaint
- Small claims court or other legal proceedings
- Advice from a qualified attorney
Deadlines and available procedures vary by location, project, contract, licensing regime, and claim type.
Questions to ask before hiring a contractor
- Is there a written workmanship warranty?
- When does it begin and end?
- Who is legally responsible?
- Does it transfer to a later owner?
- Which labor defects are covered?
- Which products or materials have separate warranties?
- Who pays removal and reinstallation?
- Are access and finishing costs covered?
- How must a claim be reported?
- Does the contractor have a right to inspect and repair?
- What dispute process applies?
- What warranty applies to corrective work?
Frequently asked questions
Workmanship warranty FAQs
What is a workmanship warranty?
A workmanship warranty is a promise concerning the quality of labor performed by a contractor, builder, installer, repairer, or other service provider. It may require correction of covered defects caused by improper installation, construction, repair, or failure to follow the agreed standard.
What does a workmanship warranty usually cover?
It may cover labor-related defects such as incorrect installation, incomplete work, improper fastening, poor sealing, misalignment, failure to follow plans, or failure to comply with stated manufacturer instructions. The written warranty controls.
Does a workmanship warranty cover defective materials?
Not necessarily. Material and product defects may fall under a manufacturer, supplier, or separate materials warranty. A workmanship warranty may cover damage caused by installing materials incorrectly.
How long does a workmanship warranty last?
The written term may range from months to several years. Separate statutes of limitation, statutes of repose, licensing rules, and implied-warranty rights may use different periods.
Does a workmanship warranty transfer to a new owner?
Only when the agreement or applicable law permits transfer. Some warranties remain with the original customer, while others follow a property or require written transfer.
Is poor appearance always defective workmanship?
No. Aesthetic dissatisfaction alone may not establish a defect. The issue may depend on the contract, approved sample, plans, stated tolerances, industry standards, and whether the condition affects function or value.
Who pays to remove and reinstall defective work?
The answer depends on the warranty and cause. A contractor may cover corrective labor but exclude access, demolition, finishing, transportation, or work performed by other trades.
What evidence helps prove defective workmanship?
Useful evidence can include the contract, plans, specifications, photographs, completion records, manufacturer instructions, permits, inspection reports, code provisions, communications, and an independent expert assessment.