This cap can solve two problems: 1) Negative house pressures can pull the smoke from one flue down another flue right beside it. Adding the flue Stretcher to the upstairs flue distances its smoke from the downward pull of the downstairs flue. 2) By raising the height of a flue above nearby roofs or structures you wiil improve draft and reduce downdrafts.
The Flue Stretcher Chimney caps come in stainless steel and copper, in 1' and 2' heights. The flue stretcher chimney caps tightens with screws and wind tests have proven that this mounting system holds tight.
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