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- เผยแพร่เมื่อ 28 ก.ย. 2024
- Join ABC acres, a Permaculture Farmstead in Hamilton, MT as we show our rocket mass heater that keeps the workshop nice and warm through the cold months of the year, while using far less wood and creating next to NO SMOKE!
Brilliant work! Living in mediterranean climate I don't really need such installations but one can only imagine how cosy the feeling is in the middle of the winter, just amazing workshop place to keep everyone productive.
Yes, we in the cold temperate climate must have strategies for keeping warm, while we dream of a vacation to a warm destination:)
Beautiful! I have had a few rocket stoves and love them! Nice explanation! and man... what a nice shop!
Thanks for watching, and glad you enjoyed it!
That is super awesome...now to find info in your videos about the bench!
A ceiling fan would help with your high ceiling unused heat problem...
Is that a fan in the corner?
I stacked up four barrels in my shop and piped into the bottom one on the floor. I cut an 8 inch hole between barrels which created a baffle. I took the upper pipe out of the side to prevent water from dripping down into the barrels. The paper labels on the top barrel never browned.
It only took a couple of cardboard boxes to take the chill off in the morning.
Very nice vid! I was appreciating how nice the bench looks and wondered whereabouts you were located. Turns out you're 9 miles away! Hello neighbor! We will definitely be pouring over your vids and website, as this year we purchased 10 mostly wooded acres in Hamilton with the intention of homesteading.
Michael, that is great! Small world:) Hope we get a chance to meet...maybe you can stop by some time and take the RMH bench for a test drive on a cold winter's day!
Great explanation, detailed and informative. Also, well done on the build. Looks great. Keep up the good work and great vids.
Thanks!
Love this unit and good quality video. Thanks bud. Well done great job !
Love your design and the bench. :)
Thanks for watching!
Well made and presented too. No flannel, just clear facts. Loved it.
Thanks JS... time is money, and we don't want to add fluff as you have vids to watch and tasks to execute. good luck!
Liked, subscribed and shared on FB. This is the way people should be going, taking small steps to improve the world rather than having Govt riding rough shod over peoples way of life, with punitive regulations and banning fires altogether.
Thanks for subscribing and sharing! Clean fire heat technologies like this, and others, paired with regenerative fuelwood agroforestry, is a much more viable option for many in the cool-to- cold temperate environments, so let's keep keeping on!
Inspired! Very well done, folks - great introduction. Now if you'll excuse me, I'm off to fully educate myself on the building techniques.
Thanks Travis... good luck!
I built a masonry fireplace in my house in '83. Fantastic heat from nothing but kindling wood.
Nice work, that is great!
Yours is very good looking. And it looks like it works wonderful
Thank you Kathy!
NIIIIIICE...love your seating area, very unique..love it alll
Thanks for watching Margie, and I am glad you liked it!
Wow ...that's awesome ..no smoke at the exhaust pipe..Nice!!!.
Very pretty! That is also some very clean exhaust you have there.
Yep, Paul! Sneaky heat!
If the firebox is over-gassed, meaning there is a smoldering event dumping smoke into the heat riser, how does heat alone take away the smoke?
Think of it as a heat pump. Rising heat drawls the exhaust through the system. Heat from barrel dissipates and starts the heat rise flow.
Can heat pipes be add to the pipes with Clean smoke little creosote
Clean as in no visible smoke is coming out of chimney, in reality you don't know what gases are produced. Composition of wood is not as simple as propane's that breaks down to water and carbon dioxide
Really good your rocket stove! Thank you!
Attilio, You're welcome!
TRES BON TIRAGE GOOD JOB (french) THANK YOU
In that case, merci beaucoup!
Did you ever measure the temperature of the cob bench as hours pass? That would be interesting. Make for a nice base for a bed in winter, too! Cheers.
Thank YOU ABC Acres! The best rocket mass heater and video I've seen so far, so much explained! I'm sure these may also incorporate water heaters also, for maximum efficiency! :-)
Clean looking install.
She's a beauty
I give you all thumbs up. Can't believe somebody would give this a thumbs down. Must be oil or energy execs!!
neil petersen
I've heard some thumbs down so they know they've watched it already. pretty rude but they save likes for other reasons I guess.
awsome job that looks really good.
Thanks for watching!
ABC acres can u please give the plans in every detail? Thank you..
Neo Cadwising Tim is checking to see what we have in terms of plans. We'll let you know if we find anything...Thanks for watching!
Looks great as well :) you should put a hose from outside leading into the air intake of the system as well. That way you are not creating a negative pressure inside your workshop which draws the cold air negating a lot of the heating that your doing. :)
Sounds like an interesting idea, thanks for sharing. :)
RayBs, Iv tried drawling in fresh air many different ways. for some reason (I have yet to find) Is dose not seem to work very well. And can even start running rocket in the wrong Direction. Even ran a u pipe heater system from out side to inside. Not good. Power drafting was needed.....?
Well I actually have theorized it, but not proven. Issues stem from the Drawling pressures from the velocity of expanding gasses'.
Dan, thanks for sharing your experiences!
from all the talk i've heard on this issue, the tremendous heat from the barrel and thermal mass cancels out or overpowers any loss of heat from drawing cold air in through leaks in the house structure, therefore running a seperate feed from outside is an unnecessary step?
the batch box style ,is at the top of my list and I use something simular
They are very nice to use, and we are enjoying our's!
ABC Acres I like this design! Would you do a follow up video of the start up?
NJ, check out our video this week, we did just that! th-cam.com/video/Ls_eqNB6d0Y/w-d-xo.html
thanks. I'm heating a very small area and I love what you are doing but I'm old school. maybe some day.
see the above comments. Rocket mass heaters, or the variation known as Masonry heaters, have been used for thousands of years in Europe. So I think these would be considered "old school," no? Time to relearn, implement and refine ancient technology, and bring it into the mainstream.
Great intro. Thanks!
great upload, respect!
We appreciate the encouragement, and thanks for watching, Branimir!
Branimir Marold Cool. sun glasses!
.. they are from old movie called "They live"! ;)
Great movie!
Nice video. Hoping to buy a house in Scotland soon and if I get a garage I'll be putting something like this in it. (Smaller)
Nice. Got married in Fort William, and we now raise scottish highland cattle. good luck!
Great practical use of ingenuity and cheap materials...
Thanks, hopefully you can do the same.
Super video ... nice bench ..and the oven, class
Thanks for watching!
Bitte gerne ... hat mir sehr gefallen .
How do you clean out your bench pipes? They must collect a lot of residue as your exhaust is cooling?
Nice work that looks like a great way to heat your home !
**
Oh I see your answer to this question already:
ABC acres
ABC acres
2 years ago
The pipes stay clean, as the wood gases, etc are burned up inside the heat riser/burn chamber in the barrel before going through the manifold and into the exhaust pipe run. We only need to clean a bit of ash out of our pipes via our clean out caps once a year, which is only about 5 minutes of work!
..
Is it necessary to have such a tall riser? I have seen videos where they cut them down dramatically & they say the draw was better and the riser drum was an accessible height used to put on a pot of water for tea, cooking and to provide moisture in the air.
I love that you can see the fire. 👍
The grass was still green! Can't be to cold out! Thanks for the info!
Johnny,
Funny, we are experiencing melt off now, and there is bright green grass underneath. I think our early snows acted as a protective insulator once the -19 to -25+ settled in for a spell. Regardless, nice to be warm knowing spring is not far off. Take care!
ABC acres Yeah we have had some really nice days here in Manitoba too this winter, we enjoy it when we can!
Its a large scale Vortex tube, so cool!
Glad you like it, and thanks for watching!
Most local codes do not allow a rocket stove for primary heating of a residence. Some outright make them illegal. However, for a storage or garage area, I have not heard of any significant legal or code restriction. Something to keep in mind when discussing rocket stoves.
One loop hole is if you place appropriate space heaters, baseboard heaters or other heater system in each room, then you could theoretically put a rocket stove in a living area and just not use the other heaters unless needed or one feels too lazy to start a fire.
@Jose Can you tell us the reasons for such legal restrictions ?
Excellent presentation. Do you have any details on the construction of your batch box?
Thanks, and Tim is looking in his office to see what we have that may be of use.
Excellent ! you've just won a new subscriber
Yes ABC, a design source would be much appreciated. These things are trial and error, design is important. This is the first I'm seeing batchbox design, and a closer look would be great too.
Scratch my request, You guys did another vid yesterday lol. th-cam.com/video/Ls_eqNB6d0Y/w-d-xo.html
Thanks!!
You're welcome!
Great explanation. Thx for doing this
You are welcome, and thanks for watching!
Any info on the (GASP) permitting or code compliance for these here in Western Montana? Nice set up, clear information...thanks for sharing!
Brendan, Tim might be able to speak to this better, but it's my understanding that you can use them if you want, but the problem is most insurance companies won't insure your house with one...
-Matt
Very useful info. Had a hard time understanding the whole concept with other videos but this one is a real eye opener. Would it be possible to build a smaller version of the Rocket Mass Stove? For a 400 sq ft space? Thanks again, Good job
Glad you found this helpful and yes you can scale down, if need be.
like this? th-cam.com/video/U7kqu1XvsXY/w-d-xo.html
I think this is wonderful! I can imagine a mud bench in substitute of yours great though! 👍👍👍
Cool idea... send us pics when you get that far!
Stayed overnight in Vietnamese farmhouse when we got
lost on patrol. He had a bench chimney in the general living area of his house. First I ever saw something like that.
Nice job !
Thanks!
Very nice.
Thanks!
nice set up thank you.
Thanks for watching!
Thats pretty slick!
We agree, thanks of checking us out
Smoke from fireplaces traditionally would be injected into the atmosphere, which provides micro particles for moisture to create new weather patterns. Think of during a field battle where there might be a good amount of smoke that's expanding upward, and during that battle it rains.
Nice! I've built quite a few standard wood stoves in my day. Going to look into how to build one of these. 👍 from....... Montana lol
You will have a lot of fun building one, and thanks for watching! I hope you have a good heat source, it looks like winter is coming to Montana now!
I just subscribed. Put out more of these videos please especially about stoves and efficiency and Cobb storage batteries
i didnt understand what was goin on under the bench from your description.but this is very cool.im gonna look up cob bench? thnx for the cool video
The 'chimney' from the fire goes sideways through the inside of the bench letting off heat before it goes up and out of the house
Put a strong ceiling fan near the fire so it blows the heat down onto the concrete slab so it acts as a mass heater also!
Ari,
Great idea and completely agree with you. Our tall shop ceilings can take up a lot of that heat, so creating movement through the space would distribute the temps more evenly throughout the shop. Eccellent, thanks!
I only notice people using relatively small timber in rocket heaters. Does thick lumber work well once the fire is roaring?
great idea
Hello sir I have a question if you dont mind. THE SET UP..As far as I know BTU requirements can be found by taking area of walls and ceilings divided by the R value of each as applicable and then multiplied by the Delta "T" or temp difference of your worst day = BTU needs. Now that being said a small average modest 1000 to 1200 square foot house would needs about 50,000 BTU's Now with that said hardwoods at less than 10% Moisture only have between 8k to 8.5k BTU max available per pound. and that would mean in the modest house you would need to burn a little over 6 pounds of dry hard wood burned at 100% efficiency to deliver the needed 50k BTU's... heavy woods have more BTU due to density than lighter ones less dense. NOW ....IF... all that is true and modern wood stoves that are put in a calorie room and actually messured with out catalytics can approach 80%... THE QUESTION... How is it mathamaticly possible to use 1/4 to 1/10th of the wood ? it would demand a 400% to 1000% more efficient burn in the rocket stove than in thewood stove and the FACT is , it is only 20% at max possibly more efficient.. THAT sire is my question.. can you please explain that to me... I will not go into why sticks and paper thing, yet..
Van, don't know why, but your comment was in the spam file of comments. The one big difference between the new high efficiency wood stoves and a well-functioning RMH is the large amount of thermal mass. The fire can be extremely efficient in the stove, but the fact remains that much of the heat goes up and out flue pipe. The RMH's superiority in efficiency comes from its ability to catch and store the heat energy in the substantial thermal mass of the bench, daybed, or whatever other iteration of mass one wishes to employ for their unique context of space and utility, as long as it fits within the design constraints for proper and effective operation of the RMH. It is not in the burn chamber itself, but rather what happens to the exhausted air after, that gives the RMH an advantage in reduced fuel consumption. Thanks for joining the conversation.
great video. thank you.
Thanks for watching!
Love the design but would like to how you built this particular
awesome sauce! u got a new subscriber!
Thanks!
Do you ever have to clean out the exhaust pipes inside the cob bench or is there risk of exhaust pipe catching on fire due to inability to clean it inside the bench?
We clean them out when needed, there's cleanup ports at each corner of the bench.
Nice video Thanks
Incredible.
If you cob the big tank ( not sure of the name, chamber maybe) , would it 1) make it safer to be closer to? 2) not loose as much heat?
If I may, I'm just going to start throwing this out there... Years ago, when my son was a young boy, we loved camping and discussed ideas of all things survival. I spoke about an unknown idea I had of a human waste pit, on each defecation adding a sprinkle of fire ash to deodorise, which would also balance acidic urine. I wondered if, once the small pit is full, straw or hey may be optionally mixed in, top the pit with turf for a time to partially compost the matter, then dig up and shape into blocks which are air dried and used for fire blocks as fuel, and very possibly make great fertiliser for agriculture also! I've always wondered why society doesn't seem to know what to do with it's excrement, other than throw wash it into the water ways??!
Composting toilets are common amongst off gridders and folks that are environmentally friendly. You poop on a hole and throw a few cups of sawdust in behind ya to keep the odor down and make good compost. After a few years you move your outhouse and you have a huge patch of super fertile soil.
Gotta compost the waste or it'll be environmentally hazardous. You need dry organics to balance it out, leaves, sawdust, paper, etc. A bit of ash may work, but I'd be a little hesitent as ash is pretty alkaline, would likely end up with soil that's unusable after a few years if you used too much.
I wonder what is inside the barrel ? Is it just open? how does it heat the smoke to burn?
Could I extend the chimney as a form of underfloor heating or right around the walls or for heating water for radiators or other uses?
Chris, that's a possibility, although the mass does absorb the majority of the heat. That said I'm aware of people who use h2o as their mass, so you should be able to do the radiator thing for sure.
Chris, that's an excellent idea to try as an experiment!
Maybe a "warm spot" for cold feet, or for a pet to sleep.
Is there any reason you couldn't feed this stove from the outside, meaning the opening to the stove is not exposed to the shop where combustible materials (paint or gas) might be in use?
I suppose you could, but I would question efficiency of loading, as well as front being exposed to unconditioned space which would lead to accelerated heat loss.
Nice After Burner heater .
Isn't it?
I would put a 2x2 foot box on top, and start selling wood-fired pizza's outta my place!
Your new business!
Looks very cool and very dangerous for a fire to get loose on you.
Well you definitely don't make one in the living room with mom's new carpet.
These have not been found to be any more dangerous than a standard wood stove or fireplace when designed and built properly.
Well done
thanks John!
maybe a dumb question as this is the first I have seen this, but, could you build the stone up around the big barrel for a nicer aesthetic? Could it stand the heat?
Lisa, by and large we don't believe in dumb questions. I don't see why you couldn't, it would depend on the stone obviously as to wether or not it could handle the heat, but most of the heat ends up in the cob, and I've seen them where the cob covers the burn chambers
too bad you didnt explain or diagram the internal pipe. does the outlet pie stop at the top and then the gases have to flow downward to escape out the chimney , like a car muffler. Or does the can have no piping in it? looks like a good idea and easy to build.
Douglas, thanks for seeking clarity. Best I can explain is that as the fire burns in the batch box, the gasses and fire exit the rear of the box into the vertical burn chamber. Most carbon is burned up at this stage, where at the top of the vertical chamber, the gasses run over and back down the outer wall of the drum, then horizontally along the bench in hidden pipe, then back along the bench in more pipe, and up the chimney to the outside. Thanks for taking interest!
Is the earthly matter dirty to sit on?
If so, couldn't you without losing thermal properties cover it with cement/perlite mix for a cleaner surface?
Love the way you decorated it.
It is really nice. Plz can you show this thing in detail .i want to install it in my dairy farm.
I want to know that is this burning chamber open from the top and front. It looks like fire is burning inside the stove that seems open from top and front???
In the UK the Government is seriously considering banning wood stoves due to smoke pollution (shock horror). This could be a real solution. Best of both worlds. Great idea.
Wicked. Why don't you put a mass around the burning chamber (i.e. the oil barrel?)
I think it's because the barrels purpose is to radiate heat to warm the room as the primary heater. If it had a mass around it, it would take forever to spread enough heat to warm the room. That's my guess.
AGearHead4Life Possible. I own a heater(fired with wood) and it's about the size of the fire chamber in the video. That one alone should be suitable to emit instant heat (I guess).. At least it is enough to heat up my flat.
If the barrel gets that hot that its uncomfotable to sit next to it, it could be insolated...
But that's all guesses.
Thanks for the input, mate.
Mark, we want the barrel to emit that heat as an initial heat source for our shop, with the thermal mass of the bench slowing releasing it for many hours afterwards. We simply sit just a little further away from the barrel when the fire is really going! Thanks for watching!
ABC acres Thank you for the explanation. In the video it seemed as if it is uncomfortable to sit next to the barrel.
I would still consider building something around the barel, ceramic tiles for example, as we have it in Germany (in very old appartments).
Unfortunately, this type of ancient oven does not use all of the heat.
I love the way you built the fire box and bench you shold try coal in the rocket stove and make a video about it
We appreciate the suggestion, and will keep it in mind! We mostly burn our scrap wood from woodworking and building projects at this point, but it would be fun and interesting to experiment a bit. Thanks for watching!
Wow! Really nice build! Did you not integrate a P-channel? Even if you didn't, it looks amazing! Thank you for sharing!
Thanks for the encouragement. There is a P-channel in it, but you may not easily see it in the video. Thanks again!
great idea but and maybe this has been answered already but how do you get the exhaust to flow into your mass heater, also what size pipe are you using and what kind of pipe?
The exhaust system runs basically just as a heat pump, drawing air in and the heat "rising" through the system until it exhausts out. The pipe is 8" diameter black chimney pipe, nothing fancy! We did put the triple wall pipe coming out of the roof to be to code, though.
nice stove,y stove is good but this is better.i have big space and i struggle to heat that. can i get the plan for that stove.
Hi. Loved your video on this heater. Im wondering if a barrel can be attached to a wood cookstove, so that one could optimize the heat made from a small amount of wood, and still be able to cook and heat water? I guess it would be a rocket mass cook stove? :) Is there any such critter?
Melissa, there certainly is such a critter. A bit of google searching will lead you to some examples. When you begin stacking the functions of a RMH, then the effectiveness and efficiency of the system is definitely increased. Thanks!
Also, check out this forum...permies.com/f/260/rocket-mass-heaters where you can find examples of cooking RMH, and even ask questions from the people that made/use them!
Man, looks like this video blew up! Great video!
Thanks to folks like you Andrew. Appreciate the viewership and sharing with your friends. All the best!
how often does the chimney of this kind of fire place needs to be cleaned, and do you do it?
i mean, i can't burn 100% efficient and prevent all kinds of stuff attaching to the exhaust, the higher burn temperature helps a lot but eventually is not enough to keep the exhaust/chimney 100% clean.
i like this idea, and it makes total sense to use as much heat as possible, and i am totally annoyed by my fireplace about being so ineffecient that it has mere decoration purpose
Alexej, we have had the unit firing for three years now, and never yet cleaned the chimney. A lot depends on quality of the material being burned as well as how much one is burning. With a conventional wood stove, we would clean ours every two years based on wood type and much use.
thank you :-)
Pretty cool
How is your shops overall heating ? How many square is your shop ? Do you use back up heat for when your away for any time?
David, the shop is about is a little over 2,000 square feet, but has tall ceilings, so the cubic footage it is heating is much greater than either a home or shorter building of the same square footage. That being said the RMH does a nice job of heating the shop space comfortably. We do have a larger infrared heater set on a thermostat to maintain a minimum temperature in the event of an extended absence(hasn't happened yet:) Thanks for watching!
Beautiful!
How big of a space is your stove heating? I have a large barn 60 x 32 x 18 (23 at peak) and trying to see if one of these would do the job?
Super sweet!
Glad you liked it, and thanks for watching!
Your video opened my eyes wide! I moved from California to South Korea, I experienced very cold winter like New York. I am planing installation fire wood stove in family room, and I am searching for something better than traditional one at the point of heat efficient without smoke.
I got a great idea from this video but I am worried for 'how to do' in this country. I have to find the best way to built Rocket Mass Heater with beautiful out fit not to take F from my wife. Thank so much!!!!
Good luck!
Took me two years to get the approval of the EPA in CA to install a masonary heather because it was not UL listed or tested. How did you get this approved with your county? Can you post any perperwork to we can all get the ability to create as wonderful
Thanks for the note. It turns out all municipalities have varying ordinances for the permits, if any, associated with wood burning stoves, and any said paperwork would be unique to that specific city/town. The biggest benefit on our end is that our RMH was designed and installed in a workshop... not a residential home. I understand that various designers / installers are starting to navigate the legal waters for UL listed approved heaters for residential use, but we have no direct experience with any such governing body. Congrats on your persistence and success. All the best!
Thanks for the very quick response. After I went through all the phone calls and letter I posted my EPA acceptance/approval letter on the North American masonry associations website hoping to help the next person that wants to try to build a heat.
I ran into the same issue with a wood burning pizza oven!
Thanks once again, great job
Hey there,
I'm trying to find out if you can run coal in one of these suckers.
I live in Central Wyoming, and there is the possibility of getting some free chunk Coal during the winter.
Cole would last much longer and burn much hotter, which is why it's a much better fuel than wood. Because cool from Wyoming is low sulfur it is the cleanest coal to burn.
Further, the fact that I can get some free chunk coal from time to time, is the icing on the cake.
JR you probably could, we've not tried it. It might not be the best fuel for the rmh, but if it's free... My understanding is you want a hot fast burn so the Mass absorbs the heat to slow release it, that said coal will heat the mass...
My understanding is that you can, wood pellets also, even corn, just need to alter the burn chamber a little. Again, this is my understanding, I haven't done it myself.
You might have to customize one to burn coal. Every coal stove I have ever seen, has a grate that the coal sits on for burning. Coal will burn hotter and longer than wood too.
JR Bailey i was also thinking about that! I don’t see why you couldn’t! My only issue with one of these heaters is what happens in a year or two when the stove pipe wroughts out and collapses blocking the flue ?
@@jeremyrock7446 Two things, many, maybe hundreds of thousands of these in existence, I have heard of not a single case of this happening. Second, properly mixed cob should never collapse, even if the liner rusts away completely.
What make or model is the cast iron stove? Or is this too something you made? Thx
Bradley, I wish I had welding and fabrication skill, and it is certainly one of my goals to learn at some point. We had it made for our project, complete with the glass in front and on top of the fire box, so we could all see that fire burn sideways into the bottom of the heat riser. Thanks for watching!
I love the design. Could you share the fabricator's contact info? I would like to inquire on having one made for my project.
Thx, Brad
Bradley, he moved, but I will see if I can track him down...
Do you show how you built it , measurements and all?
Joe, ABC can provide you with some details sketch up images of all the parts for fabrication / build-out. Visit our site, www.abcacres.com, enter your info on the contact page, and we will send forth what we have. I have hours upon hours of the build out, just need find time to review, edit and post. We will see. Thanks, Tim
Sir I've noticed that your bench has holes in the front of it, can you explain that please.
Those are clean out ports, to sweep out any debris.
Great video ABCacres. Your concept is very similar to what I've seen in Germany. I have family there and they have a German version. They might have good ideas on plans for these. Need to ask what they call the things in German to help google it.
Thanks for sharing. We have heard of some great designs in Europe, and that there are some good innovations being developed by people there. How long has your family in Germany had their's? Thanks for watching!
I was wondering if concrete would be a good thermal mass, and if you think it would be a good or bad idea to make the entire stove out of concrete and tin cans?
Good question. To my knowledge concrete would not be a great thermal mass for these, but I certainly do not have encyclopedic knowledge on the subject. Check this forum at www.permies.com...permies.com/f/260/rocket-mass-heaters. You can either search for a similar topic, or just start a new one and ask people that would know better than me. Thanks for watching!
Copper piping (with water flowing through it) wound round the exhaust pipe up to the ceiling -- how much EXTRA heat would you get by doing that?
Hard to tell, we'll try doing some calculations this week...
A side note being that water heated and under pressure can be very dangerous. it is not something we will entertain for risk over reward doesn't pencil.
Radial cooling fins on the exhaust pipe -- and the barrel (like on a motorcycle engine).
Great video!
Thanks for watching!
Won't there be a build up of carbon in the pipes? Can you clean it? Does it need to be cleaned?
Rhin, I suspect that there will be a level of residue build over time. Extent and how much are unknown, as use and materials burnt will dictate this situation. We have 3 cleanouts on the bench for accessing the ducting and cleaning out, while also monitoring. So far after two winters of burns, no concerns present. We will keep up the monitoring. Thanks for the question
Well done great video dude
Awesome bro
HomeValue Glass, we think so too