F-channel and cornice moulding?????


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Old 12-12-08, 08:32 PM
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F-channel and cornice moulding?????

what the heck is F-Channel used for? i know about J but when would someone use F-Channel?
does cornice moulding or cove moulding have a J-built into the bottom of it to recieve the siding?
the cove or cornice butts against the soffit so i guess the soffits still have to attatch to J? so the cornice butts against the J?
 
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Old 12-13-08, 06:06 AM
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F-Channel

F-Channel is used on a vertical surface to support a horizontal panel. An example is f-channel on a wall to support the end of a soffit panel.
 
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Old 12-13-08, 06:14 AM
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is'nt j channel used with soffits though?
 
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Old 12-13-08, 06:18 AM
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J-channel

J-channel is used when you have a horizontal nailing surface such as the bottom edge of a 2x4 to support the j-channel.
 
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Old 12-13-08, 08:31 AM
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i thought J channel was used for soffits? give an example when you would use F rather than J PLEASE.
THANK YOU
 
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Old 12-13-08, 02:34 PM
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F Channel

Hope the image shows up:



There are other options. Hope this helps.
 
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Old 12-14-08, 03:23 PM
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As you see from Wirepuller's picture if you used J channel it would have to be nailed to the area above the soffitt for the slot to line up. Plus F channel usually has a 1/2 inch opening and J has 5/8 inch. Yes I know you can get different sizes for both but the most common sizes are as I listed.
As far as cornice or cove moulding goes the standard now for vinyl siding is a Closure strip that the siding locks into, it mounts below and butted to the F channel for the soffitt. Plus there is a tool that punches places in the top of the siding that help with the locking in part.
 
 

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