make composite deck plugs: i upgraded my old deck to composite decking. the composite deck boards worked with hidden fasteners, but the composite boards on the stairs required me to drill down into them. i couldn't find any plugs to cover the screw heads from the major reta
if you are building a deck yourself, it is better to pre drill the holes for composite, although this isnt necessary for pvc decking. pre drilling gives the screw more space which makes it less likely to break and also leaves less mushrooming on the surface of the deck.
drill size decimal equivalent clearance hole drill chart the chart below displays a variety of common screw sizes and their clearance hole recommendations. the table provides two different class of fits, close fit and free fit. each number or diameter of screw size has its own close fit or free fit, independent of threads per inch.
re: preferred method for screwing composite decking sounds like you are using typical decking screws. if so, you need to check out the screws made specifically for composite decking. i can't think of what they are called right now that add thing again , but they are the cat's meow for composite decking.
since these deck planks are not standard lumber, special deck screws had to be designed to work with this material. regular, self-countersinking screws caused the plank to 'mushroom,' meaning that the material pulls up in a hump around the screw head. make sure to use the screws that the composite deck manufacturers recommend to avoid such issues.
cut the end from a tube of composite filler using a utility knife. cut the end of the tube at a slight angle to open a 1/4-inch hole in the end of the tube.
depends on the quality of the screw but most are designed to be driven in without a pilot hole. assuming your driving them into softwood decking dont use them within 25 mm of the end of the planks though.
shank-hole size refers to the diameter of the smooth part of the screw above the threads. length, gauge, and pilot holes understanding a few basic principles behind the technology of wood screws will take you a long way toward knowing which type of screw to choose.
consider using a slightly longer or wider screw. for example, if the stripped out screw was a 6, try replacing it with a 8. if the screw was 11/2 inches, try using a 2-inch screw to replace it. the longer or wider screw may be able to bite into fresh wood and hold solidly.
for example, seven trust decking is extremely hard and should be installed into predrilled pilot holes with 10-gauge screws that have smaller heads that can be sunk into the surface. use 3-inch screws to attach railings to posts and stair treads to stringers, and 2 1/2-inch screws to attach railing balusters.
drilling pilot holes, what size drill for what size screw? posted by maurice on monday, april 13, 2015 4:07 pm i am building benchwork for my layout and was wondering if there is a chart to tell me what size drill bit i should use when drilling a pilot hole for a screw?
step 1: remove composite deck boards. you should use a pry bar to remove the nails and screws that hold the deck boards in place. you will need to inspect each of the deck boards in order to see of they are damaged and in need of repair or replacement.