Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Thread Tools Display Modes
Old 01-13-2017, 07:40 PM   #1
Join Date: Dec 2015
Posts: 153
Purpose of roof flashing- wood stove

So I've been trying to wrap my head around the purpose of a roof flashing for the wood stove. I know it is supposed to be for waterproofing but wouldn't just running the chimney pipe through the roof with proper combustible clearances and high temp silicone work? The flashing is more a first line of defence I suppose. Flashing plus storm collar will prevent most water from getting to the seam where the chimney pipe goes through the roof but won't it also trap water assuming the stove is not burning to evaporate it. Ive seen the rubber ones people talk about here and they seem like a good idea but do they hold up to the heat well enough? Just over thinking as usual

EricW is offline   Reply With Quote
Old 01-14-2017, 10:16 AM   #2
Bus Nut
Join Date: Oct 2016
Location: Pensacola and Crystal River, FL
Posts: 647
Year: 1998
Coachwork: AmTran International
Chassis: 3800
Engine: Navistar 7.6L
the "rubber" ones are actually high temp. silicone.
They woork very well. I would not want to have flat surfaces no matter what material gooped on and around the stove pipe attempting to keep the weather out.

The high temp silicone is also use to make molds for casting lead fishing weights and zinc too for other small items. Aluminum too but the silicone breaks down soon due to the 1200 degree temps.
Lead melts at about 620 and zinc at 790 or so and the high temp silicone resist those temps quite well.
DoubleO7 is offline   Reply With Quote
Old 01-14-2017, 10:58 AM   #3
Bus Crazy
roach711's Avatar
Join Date: May 2010
Location: Farmington Hills, Mi (Detroit area)
Posts: 1,968
Year: 2000
Coachwork: Eldorado Aerotech 24'
Chassis: Ford E-450 Cutaway Bus
Engine: 7.3L Powerstroke
Rated Cap: 19
Flashing is designed for shingle roofs. If you look at the vent pipes going through the roof on your house you'll see the upper shingle goes over the vent flashing and the lower shingle goes under the flash. This makes the flashing part of the shingle roof and keeps water rolling downhill as it should.

A bus roof has no shingles so just dropping flashing over the pipe won't seal out water. You'd have to seal the flashing to the roof.

As far as heat is concerned, using triple wall piping where the pipe goes through the roof will keep the outer wall of the pipe just warm to the touch so low temp sealants would work fine. Have a look at Henry 212 roof sealant instead of silicone sealants. It's a clear, heavy duty sealant and I've used it on all my caulked seams with great results.
The Roach Motel
roach711 is offline   Reply With Quote
Old 01-14-2017, 03:14 PM   #4
Join Date: Aug 2015
Location: Nebraska
Posts: 37
Year: 1988
Chassis: M88
Engine: Cat 3208 T215
Eric, Hey I just used Dektite High temp flashing rated at continuous temp of 437 degrees with max temp of 500 degrees. It is water proof and super easy to install. Just bolted down seal with Butyl-flex sealant and ran my Class A pipe through it. Here is what i Did.

bfrey92 is offline   Reply With Quote
Old 01-16-2017, 01:56 PM   #5
Join Date: Dec 2015
Posts: 153
Thanks guys! I think I'm going to use this and try to get my hands on an o ring to seal between flashing and chimney that way if it goes bad I can just pull the pipe out and replace the o ring. I'll also use a high temp silicone and metal storm collar. Any thoughts?

EricW is offline   Reply With Quote
Old 09-15-2020, 05:27 PM   #6
Join Date: Mar 2019
Location: Manitoba Canada
Posts: 143
Year: 1998
Coachwork: Tomas
Engine: 7.3l
Rated Cap: 72
Could I see more pics please

Is it a home Depot parts

Frogpondfoug is offline   Reply With Quote
Old 09-15-2020, 06:17 PM   #7
Bus Geek
o1marc's Avatar
Join Date: Dec 2017
Location: Dawsonville, Ga.
Posts: 10,482
Year: 1999
Coachwork: Genesis
Chassis: International
Engine: DT466/3060
Rated Cap: 77
Wood burning stoves are on the same list as roof decks. Insurance companies really frown upon them. It's a reason to turn down a claim if they want to be hardcore. I have one for mine, but State Farm said no way. Check to make sure it will be covered.
I Thank God That He Gifted Me with Common Sense
o1marc is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 02:59 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.