Roof Sheathing Pattern

For clarity sheathing nails are not shown ladder framing at gable ends.

Roof sheathing pattern.

Holes drilled in roof sheathing for ventilation roof diaphragm action is maintained. Roof sheathing material must be coordinated with the roofing itself since each type of roofing has special requirements. The roof ridge by nailing roof sheathing. Cover sheathing with shingle underlayment felt to minimize roof sheathing exposure to weather unless otherwise recommended by sheathing manufacturer.

Roof sheathing installation www fema gov technical fact sheet no. Allow sheathing to adjust to humidity and moisture conditions. Correct installation of roof sheathing will ensure the best performance and help reduce complaints and callbacks. Properly fasten panels including fastening and spacing hints step 4.

If any edge swelling occurs prior to roof underlay ment installation all raised joints should be sanded flat. And scroll down to see more details on each with installation hints and tips below. Ladder framing at gable ends use extra care when attaching a ladder framed exten sion to a gable end. For information on large panelized roof systems refer to the commercial construction application section.

Common roof sheathing applications and installation recommendations are described in the related publications listed at right. Most houses contain a weak link in the connection of the roof sheathing to the rafters or roof trusses making them vulnerable to loss of roof sheathing in severe winds but solutions to this. At exposed roof overhangs the sheathing must be rated for exposure to the weather. Check the nailing surface is level step 2.

The actual span capacity depends on roof pitch species live load values and end joint pattern. To provide information about proper roof sheathing installation emphasize its importance in coastal construction and illustrate fastening methods that will enhance the. Or less roof fastening zone wind main sheathing to gable overhang velocity roof end wall framingg eaves 3 second panel 123 2 3 2 3. Cover sheathing with.

Ventilate the roof according to current building codes step 3. Cover roof sheathing as soon as possible with roofing felt or shingle underlayment for protection against excessive moisture prior to roofing. Use shingle underlayment felt conforming to astm d226 type i astm d4869 type i or astm d6757 self adhering polymer modified bitumen sheet underlayment should conform to astm d1970 or check roofing manufacturer s.