For panels thicker than 1 inch, 10d nails should be used. Forgoing glue. A glue-nailed construction technique is optimal for ensuring a flat, stable floor. Use a solvent-based glue that meets ASTM D performance standards; in cases where latex subfloor glue is required, careful selection is necessary due to the wide range of performance between brands. Improper glue application. Be sure the joists are dry and free of dirt before applying.
Letting glue dry. If the glue develops a skin, it will lose some of its strength or may not bond at all. Apply only enough glue for one or two panels at a time, and completely fasten each panel before the glue is set. Check manufacturer specs for setting times, and keep in mind that warm weather can accelerate those times.
Hammering edges. Using a sledgehammer to force a tongue and groove joint together tightly can crush the wood fibers, damaging both the panel hit as well as the one it is forced into.
Further, it can close up the necessary gap on panel edges, leading to improper spacing issues mentioned above. Some premium panels, such as Edge Gold, are designed to fit together easily. Forgetting to check your work. Prior to finished floor installation, walk the subfloor to check for squeaks, missing fasteners, improper nailing, etc.
Galvanized screws are most often used outdoors for porches and decks. The reason they are great for outdoor use is that they have a special coating on them, which the manufacturers put on them, that makes them hold up well in many different weather conditions. Both steel and galvanized screws are great for subflooring because they are very strong and hold up very well under large amounts of pressure, which is most often the case with floors. Another thing to think about is the length of the screws.
Generally, the screws that you use for installing the subflooring should be 3 inches long. However, the rule is that you really just want to be sure that the screw is at least one inch longer than the plywood that you are using so it goes a good way into the beam underneath.
This ensures that the wood is secure and makes it so that nothing moves around, which is what can cause squeaky floors. It is only during installation that the spacing of the screws needs to even be thought about. Picking the right screw for your project is probably the most important part because it will ensure that everything is just as it should be. The spacing is secondary and not something to think about until you are about to install the subflooring.
Having the screws properly spaced when you are installing the subflooring is very important, though often overlooked. When installing subflooring, you will want to place the screws every inches apart. This will allow some normal movement of the wood, while still keeping it nice and secure. However, if you have construction drawings, it is important to place the screws how the drawings tell you to, whether that means they are slightly closer together or slightly further apart.
Use 8d common nails, spaced 6" apart on edges and 12" apart in the field. If you're building from a kit, you should follow the manufacturer's installation instructions. Improve this answer. Tester Tester k 73 73 gold badges silver badges bronze badges.
Use the above specs as minimums and upgrade to screws to avoid squeaks. And use construction adhesive between the joist and subfloor, too. Hello, and welcome to Stack Exchange. This is interesting, but hard to understand; would you add a few sentences and make your post clearer? Chuck, Is this an answer to the question or a comment on Tester's answer? Comments go in the comment field The answer field is for answers to the question.
If it is an answer then more details and clarification would help others to understand. Please take the tour so you know how to participate here. I have to put my 2 cents in: 1. Sheetrock screws have a small shank and will break, even at a later date.
They have a big head for sheetrock. Whether they call them deck, sub-floor or sheathing screws, they have a bigger shank and are all acceptable. Most screw heads are larger than a corresponding nail head. When you attach the subfloor or plywood, stand on the sheet you are screwing down. Your weight helps a lot in avioding bridging or jacking, where there is a gap under the sheet and the screw threads prevent you from closing it.
Then you don't bother with drilling. Hi Matt, It doesn't matter if the screws poke through a little. Use decking screws. Hi Guys, I have been rethinking things a bit. Is this OK? Can someone please eleborate. Hey Matt.. I use an air nailer and ringshanks or spiralshanks on a regular basis You said you had sqeaks currently.
The next layer you can nail. I view that as a pretty big task, so I am definatley going the screwgun or nailgun route. That being said I prefer the nailgun route to save time. If I got the nail route which sounds like you guys bless then I will rent a nailer from HD. What kind should I rent?
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