Bad Gas-Thou shall not go there!

Home Inspector with NCW Home Inspections, LLC



                      Bad Gas-Thou shall not go there!

Wenatchee Home Inspections




Gas cooking is what most chefs prefer. So having a gas cooktop installed is a very nice feature for the chefs.


Like anything else though there are those pesky rules. Gas supply pipe in one of them. Here we had an installation of propane gas from a tank to the cooktop. To get it through the brick cladding (siding) they decided it was much easier to plumb it through the exhaust duct from the exterior to the crawlspace. The issue is this is not allowed and there is probably a multitude of reasons why you would not want to do this.


                 Gas Piping in duct


Fuel Gas Code 2015 of Washington

404.3 Prohibited Locations

Piping shall not be installed in or through a ducted supply, return or exhaust, or a clothes chute, chimney or gas vent, dumbwaiter or elevator shaft. Piping installed downstream of the point of delivery shall not extend through any townhouse unit other than the unit served by such piping.

I always tell my client you really want to do things correctly. Even if you can live with it when it comes time to sell your home these items will rear their head.




“Happiness is nothing more than good health and a bad memory.”

Albert Schweitzer


If you find any errors or have additional information that would expand on any code, building standards or manufacturer requirements please let me know.




NCW Home Inspections, LLC  is a Licensed Washington State Home Inspection service located in Wenatchee Washington serving Chelan County, Douglas County, Kittitas County, Okanogan County and Grant County Washington and the cities of Wenatchee, Leavenworth, Cashmere, Oroville, Cle Elum, East Wenatchee, Quincy and many more…  


Your Wenatchee and Chelan Professional Real Estate, Home and Structural Pest Inspection Service


Instructor- Fundamentals of Home Inspection-  Bellingham Technical College


WA Home Inspector Advisory Licensing Board                                                   509-670-9572

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Comments (3)

Jay Markanich
Jay Markanich Real Estate Inspections, LLC - Bristow, VA
Home Inspector - servicing all Northern Virginia

You said on a different site that the gray stuff was mortar!  Unbelievable!  I thought it was caulking or plumber's putty.

As to the bad gas, I'm sorry to say, that happens to me somewhat often...

Jan 15, 2019 11:59 AM
Donald Hester

Yeah, They had a mortar mix here. The photo does give it the appearance of a putty.

P.S. I can smell you from here

Jan 16, 2019 07:32 AM
Fred Hernden, CMI

Jay... Gas-X 

Jan 18, 2019 08:19 AM