How to Reinforce Ceiling Joists to Handle Heavy Loads
This would create a flat surface to adhere and nail on the double tall 2x6 joist. It would also add some stregth too if you glue and nail the plywood filler the entire length of the i-joist. Avoid the temptation to use 2 pieces of plywood filler on each i-joist. This will align each plywood filler joint right in the center of the 16' span.
Plywood ceiling? - Fine Homebuilding
Apr 12, 2009 · Bill,Actually the ceiling will be for the lower level of a two-story building that's 65+ years old. The joists are 4*6s on 16" centers. I am planning on insulating between the joists and using the plywood to keep the critters out. Edited 4/12/2009 8:42 pm ET by smllr
How to Build a Coffered Ceiling with Box Beams
The Anatomy of a Box Beam. Most box beams are made of pine or poplar and 2x framing material. But those materials can be expensive and labor-intensive to work. poor dimensional stability is another limitation. use cabinet-grade plywood for blocking and MDF for the finished surface instead; both are relatively inexpensive and stable. structural beams also can be …
An Easy Approach to Coffered Ceilings - Fine Homebuilding
Tack the ceiling panels in place. Plywood panels cover imperfections in the ceiling, create a smooth surface for paint, and offer a nailer for trim. If the layout and framing was done well, the panels will all be very close in size, if not exactly the same. Take care to locate lights and registers and cut the panels accurately.
Plywood Ceiling Tape - Fine Homebuilding
May 15, 2006 · Working with epoxy is a PITA. (I can say this with some authority, having epoxied together a kit boat.) Not worth it for a plywood ceiling, and not likely to give a smooth finish.If I had to tape it I'd use mesh drywall tape and cover it with either setting compound or (better) a premixed spackle.But some sort of lath over the joints makes much more sense.
Finish air nailer for plywood ceiling - Fine Homebuilding
Jul 16, 2002 · Hi, Lance-. In my opinion the adhesive is overkill for the ceiling. And I don't like to rely on finish nails for this application. My own preference is to use 1/4" crown staples- for the 3/8" ply I would use 1 1/4" or 1 1/2" long staples. Set them with the staple width running parallel with the grain- they will countersink very cleanly without ...
Five Cathedral Ceilings That Work - Fine Homebuilding
Assembly #4: Unvented assembly with closed-cell spray foam. It’s possible to create an unvented roof assembly using only closed-cell spray foam. The illustration shows an assembly with R-38 insulation, which is enough insulation for Climate Zones 1, 2, or 3.
Using plywood in built-up beams - Fine Homebuilding
Jan 1, 1995 · To compare built-up wood beams, I multiply beam width by beam depth squared, and then I divide the product by 6. A triple 2×10 beam has a bending-resistance factor of 64.2; add plywood between the 2x10s, and the factor increases 15% to 73.7. A beam of four 2x10s and no plywood has 18% more bending resistance than three 2x10s with plywood, but ...
Nailing or Screw pattern for plywood - Fine Homebuilding
Dec 8, 2003 · What Joe said - 6" on the edges, 12" in the field (center of the sheet). 8p nails. Assuming that the sheet is in a location that requires a structural panel - such as the corner of the house. For a structural panel, all edges must be supported; ie, if you have 8' sheathing and 9' walls, you must block where the sheet ends.
24-in.-on-center Framing - Fine Homebuilding
Rafters set 24 in. apart have 50% more load on them than rafters 16 in. apart, but in most cases this is easily handled by using a slightly deeper rafter. (For the geometry defining the strength of beams and other rectangular framing members, the Moment of Inertia, width is multiplied by the depth cubed. A 2×12 is almost twice as stiff as a 2×10.