How to properly reinstall my rooftop deck boards?
I’ve owned my house in the desert for 1 year and my rooftop deck has developed some leaks. Please see attached pics.
Deck creates a covered patio at the rear of the house. It slopes towards the back into gutters. Deck boards are composite with drain grooves underneath. Plywood deck floor appears to have been sealed only with paint.
Here are my issues and questions:
1. All the deck boards I pulled off so far were almost totally clogged with shingle dust. Figure I need to pull all/most of the boards and clean. Is this normal? What can be done to minimize or fix? Do these need to be pulled up every so many years?
2. Joists are perpendicular to the ledger board. Deck boards installed parallel to joists and are screwed to plywood floor only. Is this correct? Seems nothing is sealing screw holes in plywood.
How do I seal the floor at my repair, plywood seams and all the screw holes?
Shingle dust buildup on deck boards can occur, especially in desert areas. Regular cleaning and maintenance can help minimize it. Consider using a leaf blower or hose to remove debris. Deck boards may need occasional cleaning but not necessarily pulled up entirely.
Installing deck boards parallel to joists is common, but it's crucial to seal plywood seams and screw holes with a waterproofing product suitable for exterior use. Use a high-quality caulk or sealant to seal these areas and prevent water penetration.