1x6 Tongue And Groove Roof Sheathing

Tongue and groove boards were used for decades prior to the widespread adoption of plywood as a sheathing material in the 1950s and 1960s.
1x6 tongue and groove roof sheathing. These 8 to 12 inch wide boards were nailed together tight. The keyword here is solid it used to be standard to use shiplap 1 boards tongue groove or other boards for the roof deck. Tongue and groove decking provides the customer with an outstanding solution for roof and subfloor structure where exposed to the lower level. When the roof was first nailed on of course all the nails were in solid wood.
4 tongue and groove roof decking. Wood is an excellent insulator and in moderate climates no additional rigid insulation on the roof is necessary. Some use clips as convenient spacers. This tongue and groove decking combines appearance grade with unsurpassed quality of finish making them ideal for exposed ceiling applications.
This arrangement is applicable to 4 or more supports 3 or more spans. But as it is tongue and groove the load will also be transferred over the adjacent pieces. In the 1950s plywood sheathing and particleboard became common and today most standard construction roofs use either half inch plywood or particleboard s big brother oriented strand board osb. But the lumber was not usually kiln dried.
But you re going to have to do some of the load math to figure out what the exact load will be on one piece of the tongue and groove. With less than 4 supports a special pattern requiring specified lengths must be used. Roof deck 2x6 or 1x6 t g we use 1x6 up to 3 but the roof is then strapped after with 2x4 then sheathing. Tongue groove boards.
For 5 8 or thicker roof sheathing on 16 o c. The main reason to use tongue and groove boards these days is appearance from beneath the roof. On 24 1x6 will work but put a layer of sheathing down to eliminate the roofing nail issue. In my experience the need for tongue and groove or edge clips is determined by the thickness of the roof sheathing and the spacing of the rafters.
All end joints occur in line on every other support figure 6. All pieces are supported on three supports. Rafters it shouldn t be an issue. You maybe able to do a deflection calculation with the calculators in the red tool box on this site.