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Resurfacing deck with composite. Gap above ledger board....


hcliffe's Avatar
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04-20-17, 04:12 PM   #1 (permalink)  
Resurfacing deck with composite. Gap above ledger board....

My current deck is cedar 2 X 6 planks. They go onto the ledger board and under the siding and door thresholds by 1.5 inches or so. When I remove the 2 X 6 planks and install composite, it is thinner, only 1 inch thick. So there will be a gap between the top of the new composite boards and the siding and door thresholds. Any suggestions on how to handle that?

 
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04-21-17, 02:10 AM   #2 (permalink)  
Off hand I would say to do nothing but if you can provide a picture of the current situation we might be able to see if an issue might exist!

 
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04-21-17, 03:12 AM   #3 (permalink)  
I agree it shouldn't be an issue but seeing exactly what you are dealing with could change our minds.
How to insert pictures.
Have you double checked to make sure your framing is adequate for the composite? some require joists on 12" centers.


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04-21-17, 03:53 AM   #4 (permalink)  
We just finished one yesterday with the exact scenario. 2x6 removed and 5/4 Veranda installed, leaving a gap around the perimeter. We used the hidden fastener system for the decking, but I bought matching square edged decking and matching screws, ripped the decking to 1 3/4" and covered the perimeter.

Name:  Cole Composite Deck.jpg
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Size:  43.6 KB

 
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04-21-17, 05:17 AM   #5 (permalink)  
Nothing to add, but be sure you add wall flashing to cover the ledger if it isn't already there. Once you remove the 2x6 decking you will have room to put z-flashing behind the siding /over the ledger.

 
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04-23-17, 03:21 PM   #6 (permalink)  
Thanks for the input so far everyone. I'm not sure I conveyed the issue well so I am attaching a picture. If I do nothing, I am afraid that the sliding door threshold will get bent down from people stepping on it and nothing supporting it all the way to its edge.

Chandler: Are you saying you used the board that you ripped as a sort of moulding or trim to hide the gap?

MarksR: Yes I will have to add some joists.

XSleeper: That is a good idea to add the z-flashing, I guess that will help prevent the ledger board from rotting.Attachment 79972

 
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04-23-17, 03:29 PM   #7 (permalink)  
photo of the area that I am concerned with. Name:  IMG_4288.jpg
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04-23-17, 03:45 PM   #8 (permalink)  
Under your door threshold you just need to rip a piece of decking to the right width (on a table saw) and slip it under the threshold. That will fill the gap there and give you solid support. You do this last after the new decking is laid. A little caulk or adhesive will hold it in place, you don't really have to nail it.

 
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04-23-17, 04:09 PM   #9 (permalink)  
Yes, although I was using the Veranda for hidden fasteners which has a slot cut in the edge, I bought matching square edge (without the slot), ripped it to 1 3/4" and stood it with the finished edge up for a molding to take up that 1/2" or so, gap. I did the same thing for trim boards around the outer perimeter, ripped at 2 5/8" (1/2 a board's width less a blade)

 
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04-24-17, 06:57 AM   #10 (permalink)  
Excellent input, thanks everyone.

 
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