Any rubbish under the wood can cause errors in your cuts.
Make my own tongue and groove siding.
Other types require face nailing as well.
Tongue and groove joints can easily be made with a router when using the right bits on a proper router table.
To begin making tongue and groove boards you first must decide to use either a table saw or a router.
Check to make sure the siding you choose has a successful track record in your region.
Calculate sqft to lft coverage needed vertical siding applications require horizontal nailers blocking or other wood framing members spaced no more than 24 inches on center.
Depending on how the pieces fit together some jointed sidings can be fully attached by blind nailing through a tongue or underlap that will be covered by the course above.
Insert your new board s tongue into your old board s groove and lay the new board s front groove over the other old board s tongue.
A 1x4 tongue groove pattern is going to create a line every 3 inches while a 1x6 creates its line every 5 inches for the same pattern.