LondonWETT

Not Sure If You Need a WETT Inspection, a Sweep, or Both?

Don’t guess, and don't overpay. Whether your insurance company is asking for a report, you are buying a home, or you just want a safe fire this winter—find out exactly what your system needs.

Plain-English recommendations for London & Area.

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What brings you here today?

Select your situation below to see what the industry standards (and your insurance provider) actually require.

How to get the right pro for the job.

1

Take the Quiz

Answer 3 questions about your system and your goals.

2

Get Your Recommendation

Find out if you likely need a sweep, a Level 1 inspection, or both.

3

Get Matched (Optional)

If you want, we'll securely share your request with certified local pros for accurate quotes.

The "WETT Certificate" Myth Explained

Watch this quick 50-second breakdown before you book any services. Learn what your insurance company actually needs.

Sweep vs. WETT Inspection: What’s the difference?

Chimney Sweep vs WETT Inspection 3mm Rule Difference

🧹 Chimney Sweeping

  • What it is: A physical cleaning of your flue, smoke chamber, and firebox to remove dangerous creosote buildup.
  • When you need it: Annually if used regularly, if you experience draft issues, or before an inspection if dirty.
  • The goal: Prevent chimney fires and ensure proper venting.

📋 WETT Inspection

  • What it is: A code-compliance visual check performed by a WETT-certified individual to ensure safe installation.
  • When you need it: Requested by insurance companies, real estate agents, or when installing a new system.
  • The goal: Verify safety and compliance through a detailed written report.

⚠️ THE "CERTIFICATE" MYTH

Insurance companies often ask for a "WETT Certificate." This does not exist. Companies cannot be WETT certified; only individuals hold the certification. Furthermore, a fireplace does not "pass" or "fail". Instead, an inspector issues an Inspection Report detailing whether the installation meets safety codes.

📘 The Homeowner's Guide to
Wood Fireplaces & WETT

Not ready for quotes? Grab the free guide.

If you are just starting your research, download our plain-English guide. Learn what to prepare before an inspector arrives and the 5 questions you MUST ask before hiring a sweep.

Frequently Asked Questions

Why is my chimney still building up creosote even though I only burn dry, seasoned wood?
While burning dry wood is highly recommended, it does not eliminate creosote entirely. Every log you burn leaves behind traces of soot and tar; creosote forms when these tar droplets condense on the relatively cool inner walls of your chimney. Furthermore, how you burn the wood is just as important as the wood's quality. If you frequently have "smoldering" fires rather than hot, active ones, or if your chimney’s configuration causes smoke to cool too quickly, creosote will accumulate much faster regardless of how dry your logs are.
What are the "red flag" signs that my chimney needs to be swept immediately?
You should book a professional sweep right away if you notice any of the following:
  • Smoke Spillage: If smoke is drifting back into your room instead of venting upward, it often indicates a "draft issue" or a dangerous blockage.
  • Strong Odors: Unpleasant, acrid creosote smells coming from the firebox are a sign of significant buildup.
  • Visible Buildup: If you can see a layer of soot or tar thicker than 3 mm (1/8 of an inch) on the chimney walls, the National Fire Code considers it a potential fire hazard that requires cleaning.
  • Physical Obstructions: Evidence of bird nests, animal activity, or falling debris inside the flue.
I only use my fireplace occasionally; do I really need an annual cleaning?
Yes. Fire safety standards recommend that wood-burning systems be inspected and cleaned at least once a year, regardless of how much you use them. This ensures that even small amounts of buildup are removed before they become a hazard. If you use your fireplace as a primary heat source and burn through three or four cords of wood in a season, you may actually need an extra mid-season sweep to stay safe.
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