chimney liner installation

[arrow]

I've been looking at liners to line my current 7x11 flue tile. All the flexible stuff I've seen looks like junk to me. Its so fragile you cannot use a metal chimney brush. I was thinking about installing some rigid lining down my 27" chimney but the guy wanting to sell me the flexible stuff just laughed and said it is a major pain to install. Has anyone attempted to do this type of liner themselves?

 

[/pine]

Like a lot of things it depends on "access" and how much demo/de-construction and replacement is involved...depending...without knowing more it could be as almost as easy as an original installation or it could be as difficult as they come...??

 

[arrow]

Like a lot of things it depends on "access" and how much demo/de-construction and replacement is involved...depending...without knowing more it could be as almost as easy as an original installation or it could be as difficult as they come...??

Straight down flue with no angles or turns. Stand-able roof so access good. No demo needed to remove tiles. Seems weight is the issue as rigid is 3 times heavier than flexible and could slip and fall to the bottom of chimney if not careful. Never done it so have little clue. Looking for someone who has for enlightenment.

 

[dave1949]

No enlightenment :laughing:, but have you considered the cast-in-place liners? I think they put a sleeve in to create a form, then pour the liner in place.

I did once replace a burned and cracked clay liner with rigid stainless, the tricky part is making a good connection at the thimble. I think I ended up putting in a couple screws from the inside of the pipe at the tee connection.

Edit: IIRC, it was long ago, the weight was suspended from the top of the chimney using the cap.

 

[tractchores]

I did a rigid metal liner in a 3 story building I own. It was a straight shot and took a few hours. The big risk is if there is anthing sticking out into the chimney internally that blocks progress. I had a couple bricks forming a shelf inside the chimney halfway down. I would have had to cut into the wall and remove it, but luckily we were able to get it to break off. The liner itself was fairly pricey.

 

[arrow]

No enlightenment :laughing:, but have you considered the cast-in-place liners? I think they put a sleeve in to create a form, then pour the liner in place.

I did once replace a burned and cracked clay liner with rigid stainless, the tricky part is making a good connection at the thimble. I think I ended up putting in a couple screws from the inside of the pipe at the tee connection.

Edit: IIRC, it was long ago, the weight was suspended from the top of the chimney using the cap.

Yes I did. Price was $4300 for 27' chimney. I think I could have the entire chimney rebuilt for that.

 

[arrow]

I did a rigid metal liner in a 3 story building I own. It was a straight shot and took a few hours. The big risk is if there is anthing sticking out into the chimney internally that blocks progress. I had a couple bricks forming a shelf inside the chimney halfway down. I would have had to cut into the wall and remove it, but luckily we were able to get it to break off. The liner itself was fairly pricey.

Mine appears to be a clear shot. The liner I'm thinking about is 6" so should slip down 7x11 flue. I see no "shelves" of cement or brick to get caught on. I have no room for insulation but I think chimney is tall enough for good draft. I need something that is lifetime and not having to be replaced in 10 or 15 years.

 

[dave1949]

Yes I did. Price was $4300 for 27' chimney. I think I could have the entire chimney rebuilt for that.

Ouch. The mason that built our current chimney would give a lifetime warranty on the cast liners, but none on clay. The price wasn't that much different but the masonry stove builder wanted clay. So, we have clay.

 

[tractchores]

Mine appears to be a clear shot. The liner I'm thinking about is 6" so should slip down 7x11 flue. I see no "shelves" of cement or brick to get caught on. I have no room for insulation but I think chimney is tall enough for good draft. I need something that is lifetime and not having to be replaced in 10 or 15 years.

Sounds like a good fit then. I can't recall, but want to say we used 8", the chimney is used to vent a lot of gas appliances (3 furnaces, 3 Hw heaters). I think it had some kind of crazy long warranty as well, but don't have the papers in front of me. It's been 6 years and it's been good so far. I did put a cap on it as well to keep water from getting in it and into the chimney around it.

 

[Uprangewilly]

I put a flexible liner when I installed my woodstove. The liner was really strong and I dont think it would be any waeker than a solid liner. I had a hard time just cutting the liner to the proper length beacuse it was so thick. If you get a quality flexible liner, you shouldnt have to worry about it holding up to a cleaning brush.