To clean between deck boards, use a putty knife or an old handsaw. If the spaces between boards are too narrow for either tool, consider widening them with a circular power saw. Set the saw’s blade depth to the thickness of the deck boards, and make careful passes with the saw along the seams.Click to see full answer. Also know, how do you clean debris between deck boards?Maintenance of a wood deck takes more than just power washing, you’ll also need to remove leaves and other debris from between the boards. To do this, screw an “L” hook to the end of a broom handle, then use it to remove debris. Watch this video to find out more.Additionally, how do you clean Zuri decking? In the vast majority of cases, water and a mild detergent applied with a cloth are enough to clean Zuri Decking boards to a like-new condition. This eliminates the need for refinishing, which can also be a costly fix. Also to know is, should I leave space between deck boards? The goal is to have about an 1/8-inch gap (the diameter of an 8d nail) between boards after the decking has dried to its equilibrium moisture content. If the decking is installed wet, as is often the case for pressure treated material, it is best to install the boards tight, letting gaps form as the wood dries.What to put under deck to stop weeds? Weed Control Leaving the area below your deck uncovered can allow weeds and other plants to sprout, eventually pushing up between the deck boards. Gravel installed over a layer of fabric or plastic sheeting helps keep weeds in check and prevents the plastic or fabric from blowing out of place.