Do You Need Wett Inspection Before Chimney Repair in Ottawa?
No, not every chimney repair in Ottawa requires a WETT inspection first. If the issue is limited to exterior masonry, such as cracked mortar, spalling brick, a damaged chimney crown, failed flashing, or a missing cap, a masonry assessment is often the appropriate first step.
However, a WETT inspection in Ottawa may be necessary if your chimney serves a wood burning fireplace, wood stove, pellet appliance, or another solid fuel system and your insurer, real estate transaction, local authority, or the condition of the system calls for formal code compliance inspection.
The safest approach is to separate two important questions:
- Does the chimney’s masonry need repair?
- Is the solid fuel appliance and venting system safe and compliant to use?
Forte Masonry Contracting handles chimney masonry repair and restoration, including brick replacement, chimney repointing, crown repair, cap and flashing work, and chimney rebuilds. For a formal WETT inspection, homeowners should use a WETT certified individual qualified to inspect the solid fuel burning system and issue the required written report.
What is a WETT inspection?
WETT stands for Wood Energy Technology Transfer. A WETT inspection is a standards based inspection of a solid fuel burning system completed by a WETT certified professional.
The inspection may assess visible and accessible elements of the system, including:
- The wood burning appliance, such as a fireplace, wood stove, insert, or pellet appliance.
- The flue pipe, venting path, chimney, and accessible components.
- Clearances from combustible building materials.
- Installation details and visible signs of deficiencies.
- Whether the inspected system appears to meet relevant manufacturer instructions and applicable codes.
A WETT inspection is not the same as a chimney sweep, a basic exterior chimney review, or a masonry repair quote. It is also not a lifetime guarantee that the appliance will remain compliant or safe after future changes, damage, or deterioration.
WETT confirms that inspectors not companies or appliances are certified. The inspection result should be delivered as a written report, and that report should identify what was inspected, what was not accessible, and any conditions that do not meet requirements.
Do you need a WETT inspection before chimney repair?
It depends on the type of chimney repair, the fuel source, and why the inspection is being requested.
You may not need WETT first for exterior masonry repairs
A WETT inspection is not automatically required before every exterior chimney repair Ottawa project. For example, you may begin with a masonry assessment if you need:
- Chimney brick replacement because bricks are flaking or spalling.
- Chimney repointing because mortar joints are missing, cracked, or crumbling.
- Chimney crown repair because the concrete crown is cracked or shedding water poorly.
- Chimney cap repair or replacement.
- Flashing repair where the chimney meets the roof.
- A partial chimney rebuild above the roofline.
- Masonry restoration for a leaning, deteriorating, or weather damaged stack.
In these cases, a masonry contractor needs to assess the brickwork, mortar, crown, cap, flashing, water pathways, stability, and the extent of the visible deterioration. Forte Masonry Contracting performs this type of chimney masonry assessment and can provide a repair scope for the exterior structure.
Still, do not use a wood burning appliance if you suspect the chimney is unsafe, damaged internally, leaking smoke, producing unusual odours, showing signs of a chimney fire, or allowing smoke or carbon monoxide into the home. Contact a qualified WETT certified professional or chimney specialist for the appropriate safety inspection.
You should arrange a WETT inspection when it is requested or needed for the fuel burning system
A WETT inspection is appropriate when the concern extends beyond exterior brick and mortar to the operation, installation, clearances, flue, liner, or safety of a wood burning system.
You may need, or be asked to provide, a WETT inspection when:
- Your home insurer requests one for a wood stove, wood burning fireplace, insert, or other solid fuel appliance.
- You are buying or selling a home with a solid fuel burning system.
- You are installing, replacing, relocating, or materially modifying a wood burning appliance or related components.
- A chimney fire has occurred or may have occurred.
- You see signs of smoke spillage, excessive creosote, poor draft, unusual odours, or other operating concerns.
- The fireplace or wood stove has not been used for a long time and you want an informed safety assessment before using it.
- A visual review identifies concerns that require a more detailed technical or invasive inspection.
- The authority having jurisdiction requests an inspection.
For most insurance and real estate needs, WETT says a Visual Inspection is often sufficient. However, if the inspector identifies concerns, an insurer or authority requests more detail, or parts of the system are inaccessible, a Technical or Invasive Inspection may be recommended.
WETT inspection vs. chimney masonry inspection
A WETT inspection and a masonry inspection can both be important, but they answer different questions.
| Type of assessment | Main purpose | What it may examine | Who should perform it |
| WETT inspection | Assess a solid fuel burning system against applicable codes and standards | Appliance, clearances, venting, accessible chimney and flue components, installation details | A WETT certified individual |
| Chimney masonry inspection | Identify exterior masonry deterioration and define the repair scope | Brick, mortar joints, crown, cap, flashing, water damage, leaning, spalling, and structural condition | An experienced chimney masonry contractor |
| Chimney sweeping/maintenance | Remove combustible deposits and maintain the system | Flue and venting components, depending on access and service scope | A qualified chimney sweep or appropriate professional |
| Home inspection | Provide a broad condition review during a real estate transaction | Visible aspects of many building systems | A home inspector; it is not automatically a WETT inspection |
For example, a chimney may need repointing because the mortar joints are deteriorating from rain and Ottawa’s freeze thaw cycles. That is a masonry repair issue. Yet, if the same chimney serves a wood burning fireplace and the homeowner needs an insurance report, a WETT certified inspector may also need to assess the solid fuel system.
In other words, masonry repair can address the chimney’s physical condition, while a WETT inspection addresses the compliance and safety of the wood burning system. One does not automatically replace the other.
When to schedule the WETT inspection
The best timing depends on the repair and your goal.
Before repair: when safety, insurance, or a transaction is the priority
Schedule the WETT inspection before chimney work when:
- Your insurer has asked for a report.
- You are buying or selling the property.
- You need to know whether a wood burning fireplace or stove is safe to use before repair work begins.
- You suspect a chimney fire, liner problem, clearance issue, or internal flue concern.
- You are changing or replacing a solid fuel appliance.
- You want the inspector to document existing system conditions before extensive work.
This creates a useful baseline. The report can identify deficiencies and clarify whether repair work must be completed before the appliance is used again.
After repair: when the repair changes relevant system conditions
A follow up WETT inspection may be appropriate after chimney work if the work affects the appliance, liner, venting, clearances, firebox, flue connection, or another part of the solid fuel system that needs code compliance review.
For example, a cosmetic exterior repointing project may not require a second WETT review. By contrast, chimney repairs involving flue components, masonry removal that affects concealed areas, rebuilding relevant portions of the chimney, or work connected to an appliance installation may need to be assessed after the work is complete.
Always ask your insurer and the WETT inspector what report or follow up documentation they need. Do not assume that a chimney repair invoice alone meets insurance requirements.
If the chimney is unsafe, stop using it
Do not wait for a repair appointment if there is a potential fire or carbon monoxide concern. Stop using the wood burning appliance and arrange the appropriate inspection.
Red flags include:
- Smoke entering the room rather than venting properly.
- A suspected or confirmed chimney fire.
- A strong smoky or burning odour when the system is not in use.
- Loose bricks, falling mortar, or debris in the firebox.
- Visible cracks in the flue or firebox.
- A leaning chimney or visibly separated masonry.
- Major water damage around the chimney or fireplace.
- A cracked crown, missing cap, or severely deteriorated mortar.
- Rapid creosote accumulation or poor draft.
Ontario’s Fire Code requires chimneys, flues, and flue pipes to be inspected at least every 12 months, when an appliance is added, and after a chimney fire. It also requires repair or replacement where there is structural deficiency or decay, including cracking, settling, crumbling mortar, corrosion, loose supports, or similar hazards.
What does a WETT inspection include?
WETT outlines three levels of inspection. The WETT certified professional determines which level is appropriate based on the purpose of the inspection, accessible conditions, and any red flags found.
Visual inspection
A Visual Inspection is a non invasive review of visible and readily accessible system components. It can include measurements of clearances, opening accessible appliance doors and dampers, reviewing certification markings, and viewing the chimney from ground level.
For many insurance and real estate requests, this is the level commonly used. It identifies visible deficiencies and any red flags that may require more investigation.
Technical inspection
A Technical Inspection includes the Visual Inspection scope but involves more hands on assessment. Depending on the system, it may include moving or removing accessible panels and components, examining flue pipes, entering an attic, accessing the roof, or reviewing additional venting elements.
This level may be appropriate when a Visual Inspection identifies concerns, when components have been replaced, or when the insurer or authority requires more detail.
Invasive inspection
An Invasive Inspection is used when concealed components need investigation, particularly after a chimney fire, suspected incident, or significant concern that cannot be resolved through Technical Inspection alone.
It may involve opening finishes, disassembling parts of a masonry or factory built chimney, examining a liner, or conducting other construction related investigative work. WETT notes that corrective actions identified through this process must be completed before the appliance is used again.
Common chimney repairs that do not replace a WETT inspection
Professional chimney masonry repairs are essential when the structure is deteriorating. However, they should not be presented as proof that a wood burning system meets WETT inspection requirements.
Chimney repointing
Chimney repointing removes deteriorated mortar from joints and replaces it with new compatible mortar. It helps reduce water entry and restores the integrity of the brickwork.
If you see missing, soft, powdery, or receding mortar, book a chimney repointing and restoration assessment. However, if the chimney also serves a wood burning appliance and an insurer requests WETT documentation, arrange the WETT inspection separately.
Spalling brick replacement
Spalling occurs when brick faces flake, crack, or break apart. Ottawa’s moisture and freeze thaw conditions can accelerate the problem, particularly on exposed chimney stacks.
Replacing damaged brick is an important part of chimney masonry repair, but it does not assess appliance clearances, flue condition, or solid fuel system compliance. Learn more in our guide, Why Bricks Crack and Spall in Ottawa Winters and What to Do.
Chimney crown repair
The chimney crown is the sloped concrete top that sheds water away from the chimney. A cracked or poorly sloped crown can allow water into the brickwork, contributing to damaged mortar, spalling brick, and more expensive repairs.
Crown repair is a masonry maintenance solution. It can be crucial to the lifespan of the chimney, but it is not a WETT report.
Flashing, cap, and water entry repairs
Damaged flashing, a missing cap, and poor roof to chimney detailing can allow rain and snowmelt into the chimney system or surrounding roof area. These repairs are important because water is often the underlying driver of exterior masonry deterioration.
Forte can assess and repair these exterior components as part of chimney restoration and repair in Ottawa. If the concern involves the function or safety of a wood burning appliance, coordinate with a WETT certified inspector as well.
How to prepare for a WETT inspection in Ottawa
A little preparation can help the inspection proceed efficiently and make the final report more useful.
- Tell the inspector exactly what you need: insurance, real estate purchase, peace of mind, post fire assessment, appliance installation, or another reason.
- Identify every solid fuel appliance in the home, including fireplaces, wood stoves, pellet stoves, inserts, and related venting.
- Gather previous WETT reports, appliance manuals, installation records, repair invoices, and permits if available.
- Ensure accessible areas can be safely viewed, including the fireplace, stove, hearth, cleanouts, attic access, and exterior chimney area where applicable.
- Disclose past chimney fires, smoke issues, water intrusion, repairs, appliance changes, or previous inspection findings.
- Ask whether the inspection will be Visual, Technical, or Invasive and what access may be needed.
- Confirm that you will receive a written inspection report with the inspector’s WETT certification number.
Do not ask for a “WETT certificate for the house.” WETT explains that the inspection delivers a written report documenting what was visible and assessed at the time of inspection. A report does not certify the appliance, the installation, or the company forever.
How to find a qualified WETT inspector
When you need a formal WETT inspection Ottawa report, confirm that the person performing the inspection is individually WETT certified for the required service.
WETT advises homeowners to use its Search for Professionals directory and search by service, city or town, and province. It also notes that a company may have WETT certified people on staff, but the certification belongs to the individual. If a person is not listed in the directory, WETT says their status can be verified through WETT directly.
Before booking, ask:
- Are you currently WETT certified, and what is your certification number?
- Which inspection level do you recommend for my situation?
- Does my insurer require a particular form, report type, or scope?
- Will you inspect the appliance, flue, chimney, hearth, clearances, and accessible components?
- Will I receive a written report?
- If deficiencies are found, what work must be completed before the appliance can be used?
- Will a follow up inspection be needed after masonry repairs?
WETT inspection and gas fireplaces
A WETT inspection is for solid fuel burning systems, not automatically for gas fireplaces, gas inserts, or gas appliances.
Nevertheless, an exterior chimney serving a gas appliance can still need masonry work. Cracked crowns, failed flashing, missing mortar, damaged brick, and water entry can affect the chimney structure regardless of fuel type. If you have a gas appliance, ask the appropriate qualified gas or HVAC professional about appliance and venting safety requirements, while a masonry contractor addresses the exterior chimney repairs.
Forte’s chimney team can assess the masonry side of the project, including the brick, mortar, crown, cap, flashing, and overall chimney structure.
How much does chimney repair cost in Ottawa?
Chimney repair costs vary substantially because each chimney differs in height, roof access, masonry condition, water damage, repair scope, material matching, and the need for rebuilding.
Forte’s current Ottawa cost guide gives planning ranges that include approximately $250 $900 for a new chimney cap, $500 $2,500 for crown repair or recasting, $500 $2,000 for flashing repair, $800 $3,000 for partial repointing, and $3,500 $10,000 for rebuilding the chimney above the roofline. These are working ranges not fixed quotes and a masonry assessment is necessary to define the right repair.
For a detailed breakdown, visit How Much Does Chimney Repair Cost in Ottawa?.
A WETT inspector sets their own pricing, and WETT does not regulate how much inspectors charge. Ask for the inspection cost, scope, report format, and any potential follow up costs before booking.
Why work with Forte Masonry Contracting?
Forte Masonry Contracting is a family owned Ottawa masonry company with more than 20 years of experience in chimney repair, chimney restoration, brickwork repair, masonry restoration, brick repointing, stonework, cement parging, and exterior masonry repairs.
Our role is to identify and repair masonry problems that affect your chimney’s condition and longevity, including:
- Cracked, flaking, and spalling chimney brick.
- Deteriorated or missing mortar joints.
- Damaged chimney crowns.
- Failed flashing and water entry points.
- Loose or damaged chimney caps.
- Partial chimney rebuilding above the roofline.
- Full chimney restoration where repair is no longer safe or practical.
- Masonry fireplace repair and restoration.
We believe homeowners deserve a clear answer about what their chimney needs, what can wait, and when another specialist must be involved. If your project also requires a WETT inspection, we encourage you to arrange that work with a qualified WETT certified individual so the appliance and venting system are assessed appropriately.
Frequently asked questions
Is a WETT inspection mandatory in Ottawa?
Not for every chimney repair. However, you may need one if your insurer requests it, you are buying or selling a home with a solid fuel appliance, a local authority requires it, you have installed or changed a wood burning system, or there are safety concerns. Ontario’s Fire Code also requires chimneys, flues, and flue pipes to be inspected at least annually, when an appliance is added, and after a chimney fire.
Does a WETT inspection include chimney masonry?
A WETT inspection can note visible and accessible concerns involving the chimney as part of the solid fuel system. However, it is not a detailed masonry restoration quote or an exterior brick repair scope. If you have spalling brick, missing mortar, crown cracks, water entry, or a leaning chimney, schedule a masonry assessment as well.
Can a mason issue a WETT report?
Only a WETT certified individual can perform a WETT inspection and provide the corresponding report. WETT certifies individuals, not companies, appliances, or installations.
Do I need a WETT inspection after chimney repair?
It depends on the work completed and why you need the inspection. If the repairs affect the solid fuel appliance, flue, liner, venting, clearances, or other system components, ask the WETT inspector and your insurer whether a follow up report is required. Simple exterior masonry repairs may not always require a new WETT inspection, but do not assume confirm it first.
Is a WETT inspection the same as chimney cleaning?
No. Chimney cleaning removes combustible deposits as needed. A WETT inspection assesses a solid fuel system’s accessible components against applicable codes and standards. Some qualified professionals may offer both services, but they are different scopes of work.
What should I do after a chimney fire?
Stop using the appliance and arrange an appropriate inspection before using it again. Ontario’s Fire Code requires inspection after a chimney fire, and WETT notes that an Invasive Inspection may be required when concealed components cannot be adequately assessed through a Technical Inspection.
Does a gas fireplace need a WETT inspection?
WETT inspections apply to solid fuel burning systems. A gas fireplace may require inspection or service from a qualified gas/HVAC professional, while chimney masonry issues should be assessed by a masonry contractor.
Get a chimney masonry assessment in Ottawa
If your chimney has cracked mortar, spalling brick, a damaged crown, leaking flashing, loose masonry, or visible water damage, contact Forte Masonry Contracting for a clear, professional chimney repair assessment.
We provide chimney masonry repair and restoration in Ottawa, including repointing, brick replacement, crown repair, cap and flashing work, masonry fireplace repair, and chimney rebuilding. If a WETT inspection is needed for your wood burning system, insurance company, or real estate transaction, book separately with a qualified WETT certified individual and coordinate the findings with your masonry repair plan.
