Tongue and groove boards have a wide range of uses from ceiling paneling to accent walls and wainscoting.
1x6 tongue and groove roof sheathing.
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.
4 tongue and groove roof decking.
On 24 1x6 will work but put a layer of sheathing down to eliminate the roofing nail issue.
All pieces are supported on three supports.
All end joints occur in line on every other support figure 6.
Choose a finish to match your look as paint stain whitewash or clear finishes can transform any wood project.
Some use clips as convenient spacers.
Old houses with asphalt shingles usually had either tongue and groove boards or straight sided boards abutting.
When the roof was first nailed on of course all the nails were in solid wood.
As wood dries it shrinks.
Wood is an excellent insulator and in moderate climates no additional rigid insulation on the roof is necessary.
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.
With less than 4 supports a special pattern requiring specified lengths must be used.
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.
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.
Roof deck 2x6 or 1x6 t g we use 1x6 up to 3 but the roof is then strapped after with 2x4 then sheathing.
These 8 to 12 inch wide boards were nailed together tight.
Tongue groove boards.
The keyword here is solid it used to be standard to use shiplap 1 boards tongue groove or other boards for the roof deck.
But as it is tongue and groove the load will also be transferred over the adjacent pieces.
For 5 8 or thicker roof sheathing on 16 o c.
This arrangement is applicable to 4 or more supports 3 or more spans.
Perfect for interior or exterior projects boards are light weight and easy to nail saw trim or cut.