![]() ![]() So, how do you correctly install pilot holes into your deck boards? Screwing without a pilot hole can also cause a breakage of the screw by binding the core. The screw thus creates outwards pressure that may cause the wood to split or crack and weaken it over time. If you drive in a screw without first pre-drilling, the screw can act as a wedge. Note that pilot holes are even more crucial when screwing at the board ends.ĭeck screws cut their threads when driven into wood. Thirdly, and perhaps most importantly, pilot holes provide clearance for self-threading screws in boards to avoid damaging them. Second, you can use them to allow you to insert another hole-making tool. First, they lighten the job of the larger drill and guide it to the correct location. Pilot holes essentially serve three primary purposes. This pre-drilled hole is known as a pilot hole. Pre-drilling refers to drilling a hole in the board whose diameter is smaller than that of the screw. Yes, we do recommend that you pre-drill deck screws. When fastening two boards, the screw threads at the top may anchor in the top board and keep any panels that you have not tightly clamped apart. Also, the threads in drywall screws go nearly to the head. This feature can cause frustration, especially if the shaft is already embedded in the wood, as you cannot remove it. This restriction is because drywall screws are usually brittle, and instead of bending, they snap clean off. ![]() Though you can use drywall screws in temporary constructions and areas where safety is not a factor to be considered, they are not suitable for building projects. The weight of the coating is also supposed to follow the ASTM A153. According to the 2006 residential codes, fasteners used in ACQ pressure-preservative treated wood should be of either stainless steel, copper, silicon bronze, or zinc-coated galvanized steel. Different ASTM codes determine the specifications on the coatings for various fasteners to use in ACQ treated lumber. No, we do not recommend using drywall screws in pressure-treated wood.
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