How to measure for a chimney cap Find the right Chimney Cap

The Log Rack
Article How to Measure for a chimney cap

I have always said the hardest part of installing a chimney cap is getting out the ladder
and you have to do it twice. Once you get the energy to get the ladder out and get up
on the roof the rest is simple. The first climb on the roof is to measure for the chimney
cap. Remember to take a tape measure, paper and pencil with you! There's nothing
like getting down and forgetting if it was the big line or little line you were looking at on
the tape measure. Write it down while you're up there, then measure it again.
Measure twice buy once! Below is a list of chimney caps and the measurements
needed for them. Solutions for drafting problems

Single flue chimney with the clay tile raised from the crown is the most common. The best chimney cap will be an outside fit with 4 simple pressure screws. Measure the INSIDE of the flue tile length and width. Chimney caps are available in black galvanized, stainless steel and copper. Black Galvanized Stock sizes 8x8 will fit 6 1/2x6 1/2 to 8 1/2x 8 1/2 8x13 will fit 6 1/2x11 1/2 to 8 1/2x 13 1/2 8x17 will fit 6 1/2x 16 1/2 to 8 1/2x 18 1/2 12x12 will fit 10 1/2x10 1/2 to 12 1/2x 12 1/2 13x13 will fit 11 1/2x11 1/2 to 13 1/2x13 1/2 13x17 will fit 11 1/2x 16 1/2 to 13 1/2x18 1/2 17x17 will fit 16 1/2x16 1/2 to 18 1/2x18 1/2 Stainless Steel Stock Sizes 8x8 will fit 6 1/2x61/2 to 8 1/2x 8 1/2 8X13 will fit 6 1/2x11 1/2 to 8 1/2x 13 1/2 8x17 will fit 6 1/2x 16 1/2 to 8 1/2x 18 1/2 12x12 will fit 10 1/2x10 1/2 to 12 1/2x 12 1/2 13x13 will fit 11 1/2x11 1/2 to 13 1/2x13 1/2 13x17 will fit 11 1/2x 16 1/2 to 13 1/2x18 1/2 15" X 15" will fit 14 X 14 1/2" to 16 1/2 X 17" 17x17 will fit 16 1/2x16 1/2 to 18 1/2x18 1/2 Copper Stock Sizes 8X8 Will fit from 6 1/2"x6 1/2" to 8 1/2"x 8 1/2" 8X13 will fit from 6 1/2"x11 1/2" to 8 1/2"x 13 1/2" 8X17 Will fit from 6 1/2"x16 1/2" to 8 1/2"x 18 1/2" 13x13 Will fit from 11 1/2"x11 1/2" to 13 1/2"x 13 1/2" 13x17 Will fit from 11 1/2"x16 1/2" to 13 1/2"x 18 1/2" 17x17 Will fit from 16 1/2"x16 1/2" to 18 1/2"x 18 1/2"

Multi-Flue chimney cap is designed to cover several flues at one time. If the flue tiles are more than 6 inches apart you can use single flue chimney caps for each one. Using a multi-flue chimney cap tends to give your chimney a cleaner look with only one cap covering all the flues. Measuring for multiple flue chimney caps can be a little more difficult especially if the flue tiles are offset. Using the diagram below you will need to measure the widest point for all 4 sides, sometimes the flues are not set square to each other.



	Stainless Steel Multiple Flue Chimney Caps 13x20 Screen to screen with a Lid size 22 1/4 x 34 1/2" 13x24 Screen to screen with a Lid size 22 1/4 x 34 1/2" 13x26 Screen to screen with a Lid size 22 1/4" X 34 1/2" 13x28 Screen to screen with a Lid size 22 1/4" X 34 1/2" 13x36 Screen to screen with a Lid size 22 1/4" X 46 1/2" 14X14 Screen to screen with a Lid size 22 1/4" X 22 1/2" 17x17 Screen to screen with a Lid size 22 1/4 X 22 1/2" 17x29 Screen to screen with a Lid size 22 1/4" X 34 1/2" 17x41 Screen to screen with a Lid size 22 1/4" X 46 1/2" 17x49 Screen to screen with a Lid size 22 1/4" X 54 1/2" 17x49 Screen to screen with a Lid size 22 1/4" X 54 1/2" X 12" High 17X58 Screen to screen with a Lid size 22 1/4" X 63 1/2"

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