Am I overthinking this?

[lobsta1]

Getting ready to install Simpson Duravent liner system using the Extend-a-cap kit. The Duravent is a double walled insulated liner that I ordered ovalized. I have 10' of that & 5' of the flex with insulation. I'm guessing the total weight is about 75 lbs.

What I am wondering about is my clay liner is a few inches higher than the brick with mortar cap. I was originally planning on bending the base plate to fit around the clay. Then I made the mistake of starting to think about it. All the weight will be point loaded on the four support points. Will I have a problem with the clay liner cracking? Should I get my grinder & cut the liner down or build up the chimney around the liner?
Thanks
Al

 

[webbie]

As long as your tile is not really high.....say not more than 6 inches above your crown, I think you will be fine. This is really not much weight spread out like that.

 

[granpajohn]

Whenever somone asks "am I overthinking this", the answer is usually "Yes".

(Now that I made my little jokeline), seriously:
Those tiles can deteriorate in weather, but assuming it hasn't...
...imagine setting a 75 pound weight on a tile. Would it hold? Of course it would. In fact, you should be able to stand on the thing.

Also, I think they will sell you a terra cotta cap device if you prefer. I didn't use Simpson, but I did upgrade to that cap just to save the effort of cutting to fit as you've described above.

 

[lobsta1]

Thanks for the replies. Time to get going on the install.
Grampa, the corrollary to your reply is:

Paralysis by analysis!

Al