How To Put Two Boards Together For Roof Support

The longer the overlap distance the stronger the connection.

How to put two boards together for roof support.

Raising the boards will keep your work surface clean. An easy and invisible option of joining two boards together is by using a dowel joint. Lay the boards across strips of scrap wood. Deeper than the cut.

Some bracing provides a way to put up the trusses evenly while holding them and other bracing supports them after they are put up. Fasten the ledger board over the z flashing. Trusses form the roof line on buildings and provide support for the lumber that holds shingles or other form of roof cover. Draw cutlines from the center of the top ridge board to its end and make these cuts with the sawblade set 1 8 in.

This will put saw tracks in the bottom piece showing you where to finish the cuts. Line up the square with the plumb line then rotate it 180 degrees realigning the square on the other side of the board leaving at least 1 5 or 2 inches of bracing for the top edge above the seat cut and at least 4 inches of width for the support on the top cut. It is important to make sure that the cuts are equal distances from one another and are all the same width and depth. Fasten the house wrap to the wall with house wrap tape.

The side by side joists should be attached together by a nailing pattern similar to combining boards to form a beam. Install house wrap over the flashing. Make gussets big enough to cover at least eight inches of each frame member at each joint. What you need to do to achieve this one is to butt the pieces and mark the dowel positions accordingly.

Position the doweling jig over the top of the mark and start drilling your holes. Install flashing approved for pressure treated lumber on top of the ledger. Set thin evenly sized strips of wood under both ends of your boards to raise them off of your work surface. Without bracing it is almost impossible to install trusses.

Cover the top of the flashing with window door flashing tape. Now you can put the pieces together with a couple of 8d nails near the end of the splice. You should overhang at least a couple of feet on each side of the beam. When you glue and clamp your boards excess glue will seep out from the joints.