What quantity do I need? Walls: – Calculate the total area to be covered and choose your exposure – Divide the area by the area covered depending on the exposure • 4 inch exposure 1 square covers 80 sq/ft • 5 inch exposure 1 square covers 100 sq/ft • 6 inch exposure 1 square covers 120 sq/ft – Ex: 300 sq/ft at 5” coverage requires 3 squares – 1 square is 4 bundles so 12 bundles required – See grid supplied
What quantity do I need? Roof: – Since roof have steeper slopes and are more exposed to weather, less coverage is recommended – If the right coverage is chosen, the roof could be covered by 3 layers providing a roof that will last for 25 to 30 years Courtesy of :
Installation on Space Sheathing Ventilation: the right way – Proper ventilation is essential: – For shingling roofs or walls, proper ventilation is essential for durability, quality and longevity. – Proper ventilation reduces moisture considerably. – Proper ventilation with lath sheathing results in significant savings in energy costs. – Always install shingles over spaced sheathing, using 3 cm x 10 cm (1 in. x 4 in.) laths. – Shingle exposure should not be more than 15 cm (6 in.).
Installation on Space Sheathing Roof installation Using the Right Nails • First be sure to use rust-resistant nails to nail down shingles. • Nails must be long enough to go 128 mm (1/2 in.) into the sheathing or deck. Some codes require that nails go 132 mm (3/4 in.) into the deck. Starting Right • Install spaced sheathing. Shingles must always be nailed to sheathing for ventilation. Check building codes to make sure proper sheathing is used for the type of building being roofed.
Installation on Space Sheathing Doing It Right • Every third or fourth course, measure from the eaves up to the butts of end shingles and snap a chalk line to align butts of the next course of shingles. • To allow for expansion of a pre-finished shingle, space shingles 3 mm to 6 mm (1/8 in. to 1/4 in.) apart. (Depending on degree of humidity.) • Offset adjacent shingle courses by at least 4 cm (11/2 in.). For heavy snow regions, increase to 5 cm (2 in).
Typical Roof Installation Courtesy of :
Installation on Space Sheathing Chimneys • • • • • • • • • Saddle flashing goes upslope of chimney. Apron flashing goes on the downslope side. Cricket flashing may be used instead of saddle flashing. Extend apron flashing at least 8 cm (3 in.) up the vertical surface. It should go at least 11/2 times the shingle exposure (minimum 15 cm or 6 in.) over roof slope. Carry cricket flashing at least 25 cm (10 in.) under the shingles. Extend step flashing over the roof at least 8 cm (3 in.) and up the chimney.
Typical Chimney Installation Courtesy of :
Installation on Space Sheathing Roof valleys • After flashing is installed, shingle away from both sides of the valley. • This way, all shingles adjacent to valleys can be cut using the same pattern. • Install shingles to within 5 cm to 10 cm (2 in. to 4 in.) on each side of the centre line of valley. • Never allow joints between shingles to break into a valley: make sure all joints have a solid shingle beneath and on top of them.
Installation on Space Sheathing Roof valleys (Con’t) • Install shingles at top of valley at least 10 cm (4 in.) from each side of centre line, increasing by 32 mm (1/8 in.) per 30 cm (1 ft) down the valley. • Snap chalk lines down both sides of valley for guidelines. • Follow same principles for shingling into a hip. • Use one shingle as a pattern for cutting the other shingles. • Where a shingle course ends at a hip, cut each shingle individually.
Typical Roof valleys Installation Courtesy of :
Installation on Space Sheathing Helpful details on aligning • Place two nails 2 cm (3/4 in.) from each edge of the shingle and 4 cm (1 1/2 in.) above the exposure. • To avoid buckling, allow 3 to 6 mm (1/8 to 1/4 in.) space between each shingle for expansion (depending on degree of humidity). • Joints must not line up with joints in the two courses below. • There must be at least 4 cm (1 1/2 in.) space between joints in successive courses.
Typical Alignment Courtesy of :
Installation on Space Sheathing Wall installations New Construction: Walls • Install metal flashing above window and door openings, and caulk around openings. • Installing metal flashing over all inside corners is also recommended. • Make sure all door and window casings are in place before starting shingling. • Exposure on wall shingles can be much greater than roof shingles as walls are less exposed to weather conditions.
Installation on Space Sheathing Wall installations (Con’t) Shingling Existing Walls • Shingles are always nailed to 2.5 x 10 cm (1 x 4 in.) wooden laths fixed directly to the frame or existing wall covering. For courses, exposure and installation of shingles, follow steps for new construction walls.
Typical Wall Installation Courtesy of :
Installation on Space Sheathing Hip and ridge units • Using prefabricated hip and ridge units is faster as they come with mitered joints and concealed nailing. • For hip roofs, install hip units before ridge units. • Use same exposure as for shingles when installing hip and ridge units. • Install double starter units over the first course of shingles at low end of each hip. • Temporarily install a hip unit at the top of the hip. • Snap chalk lines on each side of the hip along the edges of both hip units.
Installation on Space Sheathing Hip and ridge units (Con’t) • Install ridge units at both ends of the ridge working toward the centre of the roof. • Create a saddle to cover where both courses meet. • Use two rust resistant nails to install each hip and ridge unit. • Use nails long enough to go 1.5 cm (1/2 in) into the deck. • Applying a 13-kg (30-pound) felt or kraft paper under hip or ridge units is recommended.
Typical Hip and ridge units Courtesy of :
