I don't know what kind of sorcery Ikea came up with to create wood that fits together like a jigsaw mat but it's amazing and has solved my outdoor patio problem in
Decking Calculator - Work Out Amount Of Decking Tiles - IKEA
Do RUNNEN Tiles heat up in the sun? : r/IKEA
RUNNEN floor decking, outdoor, beige, 0.81 m² - IKEA
RUNNEN brown stained, Floor decking, outdoor - IKEA