Any thoughts on how to fill this gap between the boards and slider? any help would greatly be appreciated. There is flashing already under the sliding door. Just need to fill/seal area under the slider. The composite boards were much thinner than the standard 2 X 6 boards that I replaced.
How large a gap is it? can you rip down a piece of 1x wood? a piece of cedar will work well. Resistant to rot and soft enough to rip easily. If you use wood be sure to paint all sides to protect from water. Can you rip a piece of the deck material? That would match the deck also. After installing, caulk the piece to the deck
No it's not wood it has some of that foam spray on the front of the flashing. I believe I am going to try and rip a piece of the board and place in between gap and seal. Sounds like the best solution. Thanks everyone for their opinion.
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