installing thimbles

[harley75]

putting in these thimbles i have to cut through brick now with brick i can just cut the round hole and slide thimble in.I was reading somewhere it had to be a 7.5 inch square

 

[bholler]

putting in these thimbles i have to cut through brick now with brick i can just cut the round hole and slide thimble in.I was reading somewhere it had to be a 7.5 inch square

What type of thimble going through what type of wall for what appliance ect ect?

 

[harley75]

What type of thimble going through what type of wall for what appliance ect ect?

dura vent outside is brick inside is the old style plaster

 

[webby3650]

You would need a 12" square for 6" chimney, 14" for 8" pipe. Add a quarter inch for adjustment. Assuming you are using Dura-tech, not Dura-plus.

 

[webby3650]

For simplicity we just cut a square on both sides, install the thimble then pack the dead space in the corners with some of the insulation you removed for the thimble.

 

[begreen]

Is this a brick wall with stud framing behind it or solid brick from interior to exterior? What thimble is being used - class A chimney pipe?

 

[harley75]

brick outside and studs inside with the old style plaster and laths

 

[begreen]

What is the thimble construction? Is this the DuraVent thimble for a class a snout extension off of the chimney tee? If yes, is this DuraPlus or DuraTech chimney pipe?
Something like this?

 

[harley75]

yes

 

[webby3650]

yes

Which system? Dura-tech or Dura-plus.

 

[harley75]

Simpson dura vent 3 inch

 

[webby3650]

Some more info would have prevented a whole needless conversation. This is pellet vent

 

[begreen]

-> https://www.duravent.com/docs/product/L550_W.pdf