Chimney flue size rules.
Typical chimney cap size.
100 mm unless no flue liner is used in which case a nominal 8 in.
Without a chimney cap all you have at the top of the flue is an open hole.
The wrong chimney flue size is one of the main reasons for a poor draft.
If your fireplace just can t seem to get right and clouds of smoke push back into your house check the flue.
The capacity of a chimney to remove smoke and or energy btu s from an appliance is directly related to the cross section area.
Round fixed stainless steel chimney cap model fgltc8 78 00 78 00.
Round clamp on single flue liner chimney cap in stainless steel model lc14 96 40 96 40.
The cap runs 35 to 550 depending on material and size.
Flue diameter and height requirements for category i draft hood and fan assisted appliances size specification requirements for chimney flues and vents diameter height etc.
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As a general rule the diameter of the chimney should match the flue collar on your wood stove.
Chimney wall thickness should be a nominal 4 in.
If you don t see the size you need contact us.
Once you have that number you can search for a slip in chimney cap of the same size.
Installing a chimney cap costs 300 on average ranging from 75 to 1 000.
Then you can search for a chimney cap designed to fit an oval opening of those dimensions.
Chimney caps storm collars and silicone are also in stock.
The forever cap guard liner top 8 in.
Inside diameter inches inside area square inches 6.
Item 39242 model sc1313l.
Shelter 13 in w x 13 in l black galvanized steel square chimney cap.
Single flue chimneys with oval flues.
Chimney size common venting uses.
Neither chimney nor flue liner may change size or shape within 6 in.
Your custom chase cover can be made to fit perfectly on any shape or size chimney or chase top.
The way wood stoves and fireplaces work a correct match on fitting the flue size to the appliance is a must.
If you want to prevent rodents leaves or precipitation from falling inside you.
In comparison a 12 inch chimney size provides a cross section of 113 inches through which to vent smoke.
Rockford chimney supply chase covers are fabricated from 304 stainless steel 24 gauge thickness optional 22 or 20 gauge available.
Venting a wood stove.
Flue diameter and height requirements for category i draft hood and fan assisted appliances questions answers about size requirements for chimney flues.
In most cases you ll pay 100 to 200 for installation.
200 mm is required.
