WETT Inspections

WETT Inspection Notes

 Site Basic Wett Inspection Barrie

(Notes of interest from recent Site Basic Course)


Wood Appliance Performance

Our WETT Instructor was quite emphatic about ensuring we did not include any performance issues as part of our WETT  Certified Inspection.  As he pointed out that a wood burning appliance could be installed in accordance with manufactures instructions, B-365 and the Ontario Building Code and still not work properly.

WETT Certified  Chimney Sweeps can offer advice on running your wood burning appliance efficiently.  Also Level 2 and 3 WETT Certified inspectors can evaluate and suggest better burning habits and equipment operation.

Most retailers and manufactures would be able to supply advice on the products that they sell.  Many have support available online.

Ceiling Clearance

You always have to follow the manufactures installation requirements, but if there is no dimension for stove top to ceiling you can follow ULC S-627.  This simply states that the required distance from floor to ceiling minimum height is 82 inches for any Certified Wood Stove.

If your appliance had dimensions for Alcove Installation you can use those dimensions for a regular installation as Alcove Installation is more restrictive.

Ember Pad

Most ember pads have to extend to sides and rear by 8 inches.  When installing a wood stove in a corner you would would only have to extend the ember pad to the wall.   So if you only had 3 inches of ember pad in this area you would still be compliant with requirements.

Flue Pipe Installation

Your flue pipe is not part of your wood stove.  Flue pipes have their own Certification Label and must be installed in accordance with the manufactures installation instructions.  If you are offsetting your flue pipe from ceiling support you would have to provide 18 inches clearance for an uncertified wood stove or for a certified wood stove it would have to be installed as per label or manufactures instructions.  Certified Flue Pipes conform to ULC S-641.

Length of Flue Pipe

First to properly measure a flue pipe you follow the lateral line for measurement.  CSA B-365 requires that an uncertified flue pipe not exceed 10 feet in length including the elbows.  Certified Flue Pipes must meet manufactures installation requirements.  According to CSA B-365 you are only allowed of maximum of 2 – 90 degree elbows to be installed.  Free standing stove flue pipe has to conform to S-629 (650 deg) or ULC S-610

Although your flue pipe have to be from the same manufacturer you do not have to use the same manufacturer for your chimney connector.

Breech Pipe Inspection

The Breech Pipe Connection is typically not covered in a Site Basic (level one) inspection.  When mortared into place and you suspect an issue then you would recommend a Level Three inspection.  Most Site Basic WETT Inspectors  will check off Unable to Inspect box on inspection report form.

Masonry Fireplaces

Many people and masonry contractors are not aware that the Heat Circulating Duct Outlets on the front of fireplaces must conform to the Ontario Building Code .  Depending on the projection from face of fireplace will determine the required clearance.  ie: when projection is less than 38 mm a clearance of 150 mm is required.


These units are covered by ULC S610 and the manufactures installation instructions.  Factory-built fireplaces are built in such a way that they can typically be installed just inches away from combustible materials.  Most are constructed of metal and have glass doors, insulated walls, air-cooled pipes, and blowers which can move the heat produced by the fire into the room.  The chimneys which come with the factory-built fireplaces are especially constructed to work safely and most efficiently with the heating unit.  It’s extremely dangerous ( and illegal ) to use a chimney which doesn’t meet the specifications outlined by the manufacturer.



Innisfil WETT Inspections

Call Innisfil WETT Inspections for Wood Stove, Fireplace and Pellet Stoves

To ensure your families safety, wood burning appliances must be installed to required installation codes and safety standards established by government and the wood-heating industry. To ensure these installations are in compliance, they need to be inspected by a WETT certified inspector. Wood Energy Technology Transfer (WETT) is the authority on all solid fuel burning appliances in Canada.

If you use a wood burning appliance in your home, such as a wood stove, wood-fired furnace, pellet stove or wood-burning fireplace, and never had it WETT inspected, you should arrange for a WETT inspection for your own safety.  Most insurance companies will also require you to obtain a WETT inspection on a new installation, on an existing installation that has undergone a modification, or when you purchase a home equipped with a wood burning appliance.

If you require a WETT Certified Inspection a call and we’ll be happy to schedule you in for a WETT inspection or just answer any questions you may have.

Our Service

Our WETT inspection is conducted according to the protocols established by WETT and includes:WETT Inspection Innisfil

  • Assessing the condition of the appliance, chimney, and flue pipe;
  • Checking for proper appliance and chimney installation and venting;
  • Verifying clearances around the appliance, flue pipe and visible chimney components; and,
  • Assessing hearth and floor protection.

Here are just some of the typical items that are checked during a typical WETT Inspection on a woodstove, fireplace or pellet stove:

  • Chimney & Cap
  • Chimney Liner or Flue Tiles
  • Smoke  Chamber
  • Wood Stove or Fireplace Damper
  • Firebox & Firebricks/Linings
  • Hearth & Floor Protection
  • Mantle & Clearances to Combustible Walls & Ceilings
  • Heat Shield Construction for Reduced Clearances
  • Proper Flue Pipe Installation & Venting
  • Clearance to Combustible Exterior Items
  • Chimney Foundations & Masonry
  • Overall Condition of the Woodstove, Fireplace and its Chimney

Results will be reviewed upon completion of the inspection and a WETT inspection report will be provided at that time.

Call Roger at 705-795-8255

Toll Free – 888-818-8608

Email Roger

Barrie WETT Inspections

Barrie WETT Inspections – Over 12 Years WETT Certified Experience

WETT – Wood Energy Technology Transfer

The Truth About Your WETT Inspection and WETT Certification!

Most home insurance companies now require that all their fireplaces or wood stoves be”WETT certified“. The problem is that there is no such thing as a WETT certification, only registered testing agencies (such as Underwriters Laboratory Canada, Underwriters Laboratory ( US version)  or Warnock Hersey) can “certify” units mandated by the codes in CSA B365 through specific unit testing. However, this does not mean that WETT Certified inspections are not important.

WETT is actually a training organization that teaches inspectors how to check for code compliance and safety with wood burning appliances. They often are involved when you buy or have a wood burning appliance like a fireplace or wood burning stove installed. They also may help with maintenance and the prevention of problems. When someone is WETT certified, it means that they are certified to perform safety checks and maintenance on a wood burning appliance. The term doesn’t apply to your wood burning stove or fireplace, but rather, to the person who is inspecting these appliances.

WETT inspections typically include examinations of:

  • The chimney
  • The liner and flue
  • The smoke chamber
  • The damper
  • The firebox
  • The hearth or floor around the wood burning appliance
  • Whether combustible surfaces are far enough away from the appliance and its parts

For Insurance Inspections a Site Basic Inspection will be enough to tell the inspector if the installation of your wood burning appliance is safe. In extreme cases, such as after a “Chimney Fire”  you may need a Higher Level of inspection to make sure that even the parts you can’t see are working properly. A WETT certified member can handle basic visual inspections, but it takes a WETT certified technician to actually conduct the more intensive inspections. Technicians can also can remove parts and open up areas to inspect and perform maintenance on wood burning appliances or fix major problems that have arisen.

WETT Inspection.com offers WETT inspections. Having a WETT Certified Inspection will help keep your home safe. You should have your Wood Burning Appliance inspected at least once a year or more depending on how much you use your wood burning appliance. The only way to keep your home completely safe from fire is to prevent it before it happens.


Call Roger Frost  at  705-795-8255 to Book Your WETT Inspection Today!

Toll Free –  1-888-818-8608

Email  [email protected]

Here are some pictures from actual WETT Inspection performed in the Barrie and Simcoe County Area:

Chimney Flue Liner Cracked

This clay flue liner will require repair prior to using chimney.

Wood Stove Certification Label

This is a Typical Label verifying unit has passed Listing Agencies Test.

Chimney Has Home Made Cover

A type chimney has home made cover. This type of chimney does not comply.

Improper Flue Tile Installation

Improper Flue Tile Installation – Repair Required

WETT Certified Inspections in Barrie Alliston Orilla

WETT inspection identified improper chimney installation

A Type Chimney - Does not Comply for Wood Stove or Fireplace

A Type Chimney – Does not Comply for Wood Stove or Fireplace

Low Chimney - Orillia WETT Inspections

Chimney is required to be 3 feet above peak or meet the 2 feet above 10 feet away rule.

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