How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Machinc Your Own Question
Machinc, General Contractor
Category: Home Improvement
Satisfied Customers: 921
Experience:  Has written home improvement articles since 2008. Earned South Carolina Residential Builders License in 1991.
Type Your Home Improvement Question Here...
Machinc is online now
A new question is answered every 9 seconds

Outdoor fireplace smokes

Customer Question

Outdoor fireplace smokes
Submitted: 1 year ago.
Category: Home Improvement
Expert:  Machinc replied 1 year ago.

Most chimneys that do not draw properly are partially blocked or have a design problem.

  1. Check that there is no blockage in your chimney.. Leaves , nests , construction debri.
  2. Check that the chimney has a liner , either clay or metal pipe.
Expert:  Machinc replied 1 year ago.

After checking the above if the chimney is clear and you can tell it has a liner the possible cause is the chimney is too short.

i will explain how to test for this in a moment

Expert:  Machinc replied 1 year ago.
  1. ​if there is a decorative cap on the chimney remove carefully.
  2. Insert a metal chimney liner section into the chimney ( I will post a link )
  3. Make sure the section is secure and only extends into the ecusting chimney about a foot.
Expert:  Machinc replied 1 year ago.

Once the temporary section is in place build a fire and observe if performance has improved. If not add one more section ( they come in around two foot increments) .

I will post more and a link in a moment.

Expert:  Machinc replied 1 year ago.

This is the type of pipe you can use to test the "draw " of the fireplace by increasing the height of the chimney.

This pipe and similar types come in different sizes .you have to get it to fit tight so size is important .

Once the fireplace is "drawing " properly the chimney will need to be increased to the test height.

This can be done by adding additional masonry or by using decorative pipe and caps.

I will be glad to answer any questions you may have

Expert:  Machinc replied 1 year ago.

This is just a sample of what is often used to correct the problem you are describing.

Expert:  Machinc replied 1 year ago.
By adjusting the length of the "test pipe" you can find the correct height for your finished chimney.
Expert:  Machinc replied 1 year ago.
Dont be tempted to make it too short or you could get right back into the " poor draw" smoking situation.