|
| Author |
Message |
KinAlberta
Member
|
# Posted: 15 Aug 2015 09:53pm - Edited by: KinAlberta
Reply
I might be running a wood stove chimney up an outside wall where I worry that any stray hot cinder might fall to the ground beside the wall and potentially ignite dry grass or something.
Are there any chimney rain caps that are also very effective spark arresters as well?
Source:http://www.foresthistory.org/ASPNET/Publications/CCCforestry/images/sketch19-4 .jpg
As an aside I looked up at our cabin's new metal roof the other day and for the first time noticed how incredibly poor the rain cap over the wall mount propane furnace is. A flat piece of tin no wider that the pipe and elevated maybe 4" above the pipe. We haven't used the furnace in years but now I figure that pipe may be full of spruce needles etc. Moreover mildest driving rains must have for years been pouring down that chimney.
|
|
creeky
Member
|
# Posted: 16 Aug 2015 09:05am
Reply
a friend of mine just found a wasps nest in his propane wall heater. he wondered why it was buzzing. they were going down the pipe and nesting in the sealed combustion box.
now to figure a way to clean out the box before heating season.
|
|
DaveBell
Moderator
|
# Posted: 18 Aug 2015 07:10pm
Reply
Google Chimney Spark Arrestor Cap then click Images. Many styles to choose from.
|
|
KinAlberta
Member
|
# Posted: 25 Oct 2015 10:31pm - Edited by: KinAlberta
Reply
Yeah I did that and most caps just have one layer of screen wrapping around the opening.
Pretty sad..
This one looked interesting...
http://www.chimneycapdesign.com
|
|
bldginsp
Member
|
# Posted: 26 Oct 2015 12:50am
Reply
That screening is all that is required here in severe fire danger country. Yeah it looks cheesy but I guess they figure that embers small enough to fit through aren't big enough to matter. Just a guess.
|
|
Gary O
Member
|
# Posted: 26 Oct 2015 07:24am
Reply
I too was concerned about sparks.
It'd been awhile since even having a wood stove and couldn't remember if sparks just flew out the chimney and dissipated into the air, or a windy day would carry them into the pines...
I did a hard target search for the best spark arresting weather cap in the nearest city.
Turns out you can get the spark arresting screen for the cap, but I've been advised to leave well enough alone by the locals here. But I'll be dogged if I can remember why...maybe creosote buildup (?).
Anyhoot, I been eyeballing what's comin' outta the chimeny during the evening, and have yet to see one spark, even with a hot fire..another thing I've been advised...'build a hot fire ever once-in-awhile to burn out the buildup'.
Here's what we have;
Made by Selkirk
As I stated, you can get the screen.
|
|
KinAlberta
Member
|
# Posted: 4 May 2016 04:14pm - Edited by: KinAlberta
Reply
Quoting: bldginsp That screening is all that is required here in severe fire danger country. Yeah it looks cheesy but I guess they figure that embers small enough to fit through aren't big enough to matter. Just a guess.
My concern is because it would cap a chimney going up one side of the cabin.
Anything that comes out hot could fall down onto very dry materials on the ground below.
If it were mid roof, like our other existing chimneys, any glowing embers just fall onto the roof or travel a number of feet before getting beyond the roof's edge.
As an aside:
A very devastating fire north of my city. (The second noted fire is only about 30km/20 miles from our property):
1,600 structures lost in Fort McMurray as fire consuming city grows to 10,000 hectares Paige Parsons, Postmedia News | May 4, 2016 Many of the 88,000 evacuees are trying to make their way south from the far-flung northern municipality. A fuel tanker is en route to Highway 63 to help drivers who spent the night stranded without gas while trying to flee. ... A second wildfire has sprung up and is affecting properties on the Alexis Nakota Sioux Nation Reserve in Lac Ste. Anne County. Alberta Emergency Alerts describes the fire as "serious." URL
|
|
bldginsp
Member
|
# Posted: 4 May 2016 08:35pm
Reply
Mc Murray fire looks nasty.
I don't think you will find a different/better spark arrestor. The holes in the mesh have to be large enough to let ash out or it can clog up, but they need to be small enough to catch embers.
You could raise the chimney up 8'-10' to give the embers that much farther to fall before striking combustibles, and/or put down gravel within a 30 foot radius of the chimney. Or keep the area sprinkled during the dry season.
|
|
|
|
