Which Direction Should Deck Boards Run

Run Decking Boards Perpendicular to a House (Parallel to the Joists) On most decks, the decking boards run parallel to the house and across the joists (either perpendicular or at a 45 degree angle).

Which direction do you lay decking boards?

What is the correct way to lay decking? Any decking board manufacturer or professional will tell you: “The proper way to install a decking board is ridge side down.” The ridges are designed to allow for airflow, to stop moisture sitting in the ridge, and allow for a stronger structure.

Should decking boards run horizontal or vertical?

Running the boards parallel to the length is always desirable, it gives the deck a much bigger look. If you run the boards parallel to the width, it tends to give the deck a stumpy look, not very desirable.