Check to be sure weep holes are open along bottom of window openings.
How to repair siding where it meets the deck.
The bottom edge is best cut at an angle 15 or so so that water drips off the front edge.
Nail undersill trim j channel will also work over the bottom cut using 11 gauge aluminum nails.
Nail it to the sidewall or glue it if nailing isn t possible.
Priming and painting the siding before it is installed is always good especially that bottom edge.
Remove nails or screws from the damaged decking board using a pry bar screwdriver or drill.
Problems you will run into and how to fix them duration.
James hardie siding deck flashing.
Cover with cap flashing.
If necessary remove a few pieces of siding nail the undersill then replace the siding.
Inspect the area above the leak including both indoors and out.
Look at the point where your deck meets your house.
If the fasteners won t come out chop the board into pieces with a chisel or saw pry up the slivers and replace the board.
Lift the bottom shingle and slip in the kickout flashing.
There are other factors that indicate a properly installed deck but most of them take a trained eye to see.
Step flashing where a roof meets a wall duration.
The siding should not go behind the deck board.
If it looks like the entire deck has just been mounted on top of the siding it s wrong.
1removing nails and screws.
If the kick out and step flashing can t tuck behind the siding screw on cap flashing to cover it then caulk along the top.
Use a caulking gun to apply a continuous bead of silicone sealant along the vertical seams between the vinyl j channels and the exterior window casings.
This is usually what i see when performing home inspections.