Piping a wood stove thru wall of metal shop

[RolandJ]

I recently finished my new work shop and I am going to be installing a wood stove. The whole shed is metal roof and walls and I dont want to make a hole in the roof for fear of leaks. I want to go out the thru wall but I dont see a kit that will work. Someone must have come across this. Please let me know what you think ? Thank you.

 

[KLauber]

CHeck with Kenny61, I think he did that for his shop in upstate NY maybe.

 

[GHarman]

Make sure you clear the highest point of your roof by 4' to avoid down drafts. An elbow or two increases creosote buildup and decreases the efficiency of the chimney. What size?

Check out the Duravent and Metalbestos class "A" chimney materials. GregH



Simpson Dura-Vent, DuraTech Class A Chimney System, Dura-Vent





Vent Pipe Diameter Vent Kits from from all major brands at Ventingpipe.com

 

[mwilson]

I have a customer in Northern Maine that made his chimney out of a scrap Delimber Boom. It is 10" x 10" square tubing and it was about 30' feet long. He closed in the bottom and welded a clean-out door just up the side from the closed end. Then he welded a thimble (stove pipe connector) at the correct height and had it stood up on a small cement pad.



A chimney fire will not hurt it or burn through it and it does not go thru the roof. Attached to the outside of the shop.

I found it to be a very clever idea.



You may not need something quite that large but the principle of it is a sound idea.



Mike.

 

[Bill Stockard]

I have a customer in Northern Maine that made his chimney out of a scrap Delimber Boom. It is 10" x 10" square tubing and it was about 30' feet long. He closed in the bottom and welded a clean-out door just up the side from the closed end. Then he welded a thimble (stove pipe connector) at the correct height and had it stood up on a small cement pad.



A chimney fire will not hurt it or burn through it and it does not go thru the roof. Attached to the outside of the shop.

I found it to be a very clever idea.



You may not need something quite that large but the principle of it is a sound idea.



Mike.

My neighbor across the road from us has a similar set up for his wood stove except he used a round 6" thick wall steel pipe and like Mike's customer he placed it upright on a concrete pad right up beside the metal building and a couple of feet higher than the roof line. He's been using it for over 10 years and a chimney fire won't hurt it or his building.



Bill

 

[GHarman]

Problem with the home made chimney is; will it pass N. J. building code? If you have home owners insurance, they may drop your coverage or reclassify you as a higher fire risk without "code" installation. 6' or 8" Schedule 40 pipe makes a great chimney, especially when a 3' section of Dura Vent can cost $150 or more. They do cool down faster and load up with creosote because they have no insulation. You gotta run 'em hot to keep from multiple cleanouts during the winter. If you live in an area with strict building codes, you will not save any money by short cutting the system. Find out what you need to do before you spend the money!
I have a wood stove in my shop, also. The bottom of the fire box is 2' off the deck. Another necessity if you park cars in there. Gasoline fumes are heavier than air and sink to the floor. GregH

 

[RobertHiltz]

Have you considered a outside wood boiler and using hot water to heat the shop. I have heated my house and shop for 35 years now with the same boiler.

 

[RolandJ]

those ar e some interesting ideas. I basicallu need to know just what to use to penetrate the wall. The noraml thru wall kits look like the are meant to go thru a normal wall. unless i pack it out with a piece of metal. Any thoughts.

 

[mwilson]

Something like this???



DuraVent 58DVA-WTU 5" x 8" Inner Diameter Universal Wall Thimble



Assuming that it is a single wall building???



Mike.

 

[BIGNASTY]

On my in house pellet stoves we went thru sheet rock /insulation / and siding it was a vent pipe within a pipe. I piped the outside under the decks to remove snow as muck as it can. The outside pipe rarely gets hot and surly not hot enough to start a fire.



Ever think about a Pellet stove burn hotter cleaner and less maint. Just a thought and in some cases you mite not need a chimeney they burn that clean

 

[Bill Stockard]

I've owned two different heated and insulated steel building shops. They are heated with a 100K BTU LPG fired unit heater hanging from the roof about 14' off the floor and are both vented through the roof with double wall vent pipe. The first shop was leak free for 18 years before I sold it and the one I have now has been leak free for 6 years. Both vents were installed by someone experienced and qualified in installing vents in metal roofing. I wouldn't be afraid to vent through the roof if someone who was experienced and qualified did the job.



A properly installed vent pipe by a quailfied installer would be able to meet local building codes and insurance requirements.



Bill

 

[Grizzly]

Something like this???



DuraVent 58DVA-WTU 5" x 8" Inner Diameter Universal Wall Thimble



Assuming that it is a single wall building???



Mike.

I used the Thimble Kit, as said by Mike, to go through my 2x6 frame and brick wall. I also installed a cleanout at the bottom of the double wall vertical pipe. In our state, we have to extend the chimney 2' past the highest point of a pitched roof.

 

[CBari]

NASTY, How well does the pellet stove work and how many pounds of pellets do you burn in a typical week. Also how big an area are you heating.

 

[BIGNASTY]

NASTY, How well does the pellet stove work and how many pounds of pellets do you burn in a typical week. Also how big an area are you heating.

We have 3 stoves 2 like the top pic in the upper part of the house 1 in the living room and 1 by the bedrooms. Both if not regulated properly will RUN YOU OUT OF THE HOUSE we have the one in the living room on most of the day and evening then turn up the one by the bedrooms and turn the other down. The other is in the rec room downstairs. The house is a little over 2K sq ft 1st floor. The amount of pellets is kinda hard to figure because how hot or cold do you like it? The Info below is kind of high I think we dont use as much as that. But then we like a cool bedroom and use covers to keep warm and same in the living room we use afghans to cover our legs while reading or watching TV. The use of ceiling fans distributes the heat REALLY NICE and have no cold spots in the house. I really dont know the amount we use because the lumber yard in town makes the pellets and we buy them by the TON. I will ask the wife how many times she fills ours up a week . Soft wood pellets burn longer and hotter than hard wood pellets dont ask me they just do and it's a noticeable difference, We like them alot and would not go to wood stove .



Wood Pellet Stoves By the numbers



Freestanding models can heat from 1,000-to-3,000 sq. ft.

Burns about 15% more efficiently than wood stoves

Uses less electricity than four 100-watt light bulbs even on the “high” setting

Pellets contain about 15%-50% less moisture than wood

A 40-lb bag can provide 20 hours of non-stop heat

Some hoppers can hold 240 lbs of pellets

One ton of pellets equals 2. 8 barrels of oil

 

[mwilson]

We have 3 stoves 2 like the top pic in the upper part of the house 1 in the living room and 1 by the bedrooms. Both if not regulated properly will RUN YOU OUT OF THE HOUSE we have the one in the living room on most of the day and evening then turn up the one by the bedrooms and turn the other down. The other is in the rec room downstairs. The house is a little over 2K sq ft 1st floor. The amount of pellets is kinda hard to figure because how hot or cold do you like it? The Info below is kind of high I think we dont use as much as that. But then we like a cool bedroom and use covers to keep warm and same in the living room we use afghans to cover our legs while reading or watching TV. The use of ceiling fans distributes the heat REALLY NICE and have no cold spots in the house. I really dont know the amount we use because the lumber yard in town makes the pellets and we buy them by the TON. I will ask the wife how many times she fills ours up a week . Soft wood pellets burn longer and hotter than hard wood pellets dont ask me they just do and it's a noticeable difference, We like them alot and would not go to wood stove .



Wood Pellet Stoves By the numbers



Freestanding models can heat from 1,000-to-3,000 sq. ft.

Burns about 15% more efficiently than wood stoves

Uses less electricity than four 100-watt light bulbs even on the “high” setting

Pellets contain about 15%-50% less moisture than wood

A 40-lb bag can provide 20 hours of non-stop heat

Some hoppers can hold 240 lbs of pellets

One ton of pellets equals 2. 8 barrels of oil

Many in use up here, but there are two factors that influence the performance from the feedback I get from employees and friends that have them



(1) You must use good quality pellets and store them in a garage or cellar.



If not you get home and it is plugged. The next night plugged again and so on.



(2) Once you start it for the fall keep it running. Open a window if the house gets too hot. Have seen many issues with the automatic ignitors and circuit boards if you have it starting and stopping constantly.



Other than the above two issues I hear nothing but good things about them.



Mike.

 

[BIGNASTY]

We actually never turn off (except) in the summer. But you can turn them down by that I mean that it just drops fewer pellets in the fire and then you have less heat. Usually in the morning when I get up to tend to the animals I turn the one in the living room back up and when I get back from chores the wife is up and fixing breakfast and doing her thing and has turned down the other one. Its just that ya have to think about it and allot of people dont want to mess with it.

 

[mrtrombley]

My son is a certified Pellet Stove installer. He worked for a local dealer for about 4 years before changing jobs. He recommends Harmon stoves as being one of the best on the market, certainly not cheap though.

My house is approx 1500 sq ft, all on one floor. We installed a corn/pellet burning stove in our cellar. We also put 3 air registers in the floor. The pellet stove is completely automatic, running on a thermostat wired to the first floor living space. Can also be run manually. It heats the whole house very comfortably, no other heat sources. It uses about 400 watts for constant running. It does need power to run, but when our power went out last week, I hooked it up to a 750 watt inverter and the battery out of my RV (stored in basement for winter). It ran perfectly. My son says a good battery should run it about 20 hours.

We start it up in the fall and it pretty much runs all winter. The only thing we have to do is keep pellets in it. I use about 1-40 lb bag per day in normal cold weather and maybe 1&1/2-40 lb bag in really cold weather. We probably use about 4&1/2 to 5 tons each winter ( 1 ton comes on a pallet of 50-40 lb bags). I store them in my cellar too, which stays nice and warm and dry because of the stove). Of course the stove has to be cleaned out once in a while, my son does that.

We are going through our 4th winter with it, no problems at all. It has a 4" vent pipe that extends out through the cellar wall with a down cap on the end. That's all that is needed because a blower pushes the gas outside.

Very happy and warm, cheap electric bill too in my "total electric" house.

 

[jhenderson]

The only problem with either a pellet stove or an outdoor boiler is they both require electricity. I know some pellet stoves offer a battery back-up, but they only last hours, not days. It gets wicked cold about the 3rd day of a power outage.

 

[BIGNASTY]

back up gen takes care of that but the power requirement is very low.

 

[BIGNASTY]

NASTY, How well does the pellet stove work and how many pounds of pellets do you burn in a typical week. Also how big an area are you heating.

I asked the wife about your question she said that we use about 30 to 40 pounds a day between the two upstairs stoves. and the one down stairs we have on low untill I go down there and she said that one takes next to nothing untill I go down and use it. So about the same as mrtrombley its just that I have to clean 3 out instead of 1. By the way that isn't as bad with Pellet stoves as with wood stoves my FIL and BIL both use wood stoves and they are for ever cleaning out the ash compared to the pellet and they have to add wood where the pellet after the hopper is filled is all automatic