1x6 Tongue And Groove Roof Sheathing

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1x6 tongue and groove roof sheathing. All pieces are supported on three supports. When the roof was first nailed on of course all the nails were in solid wood. This arrangement is applicable to 4 or more supports 3 or more spans. 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.

As wood dries it shrinks. Rafters it shouldn t be an issue. The keyword here is solid it used to be standard to use shiplap 1 boards tongue groove or other boards for the roof deck. With less than 4 supports a special pattern requiring specified lengths must be used.

You maybe able to do a deflection calculation with the calculators in the red tool box on this site. Tongue and groove boards were used for decades prior to the widespread adoption of plywood as a sheathing material in the 1950s and 1960s. Tongue and groove boards have a wide range of uses from ceiling paneling to accent walls and wainscoting. 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.

But the lumber was not usually kiln dried. Tongue and groove commonly used as roof sheathing where a ceiling will not be installed and they will be visible from inside the house such as across beams in a vaulted ceiling. These 8 to 12 inch wide boards were nailed together tight. The main reason to use tongue and groove boards these days is appearance from beneath the roof.

Perfect for interior or exterior projects boards are light weight and easy to nail saw trim or cut. Wood is an excellent insulator and in moderate climates no additional rigid insulation on the roof is necessary. All end joints occur in line on every other support figure 6. But as it is tongue and groove the load will also be transferred over the adjacent pieces.

Old houses with asphalt shingles usually had either tongue and groove boards or straight sided boards abutting. On 24 1x6 will work but put a layer of sheathing down to eliminate the roofing nail issue. 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. For 5 8 or thicker roof sheathing on 16 o c.

Some use clips as convenient spacers.