LifePine® Roofing Architectural Specifications
This information has been designed to aid architects and builders in specifying LifePine® Siding Shakes and Shingles. It suggests a standardized terminology and style for ordering in the hope of improving accuracy. And, it incorporates a general outline of the latest application information. Please note, however, that this is a specification guide only. It is not intended to be a complete reference to the characteristics or application of LifePine® Shakes and Shingles. Comprehensive literature on such subjects is available on request.
1. General Specification Data
A. The contractor shall cover specified roof surfaces one of the following LifePine® Products: Ultra Shake or Classic Shake.
B. Shakes or shingles for roofs shall be (specify grade and length).
C. Roof shakes or shingles shall be laid with a weather exposure of (specify in inches).
Maximum Weather Exposure for Siding Shakes and Shingles
|Ultra Shake 24″||10″|
|Classic Shake 24″||10″|
LifePine® Shakes and Shingles shall be applied over solid decking or open spaced sheathing.
A. Solid sheathing shall be wood or nailable base, such as plywood, shiplap, or other softwood panels, applied according to specifications of the American Plywood Association. Thickness is dictated by truss span.
NOTE- Solid deck systems for Micronized Copper Azole treated Southern Yellow Pine roofing shakes DO NOT REQUIRE breathable underlayments or spacer boards. For all other species of untreated or treated wood shakes, breathable systems are recommended due to a lack of treatment penetration.
B. Open sheathing shall be 1″ x 4″ or 1″ x 6″ boards.
3. Roofing Felt Interlay
Contractor shall apply a 36″ wide strip of No. 30 minimum roofing felt at the eave line. An 18″ wide strip of No. 30 roofing felt shall be applied over the top portion of the shakes and extend onto the sheathing. Bottom edge of felt shall be positioned at a distance above the butt equal to twice the weather exposure.
4. Roofing General Application Data
A. Shingles/shakes shall be doubled at all eaves to form a starter course.
B. Butts of the shingles/shakes in the first course on roofs shall project 1 ½” from the edge of roof eaves to insure proper spill into gutters.
C. Shingles shall be butted together at the side edges as they are installed.
D. LifePine™ Shakes and Shingles shall be applied with weather exposures consistent with the maximum exposure table above.
5. Roofing, Shingles/Shakes, Miscellaneous Flashing
A. Chimney flashing shall extend up the chimney to a height not less than 6 inches and up the roof slope to a point equal in height to the flashing on the chimney but never less than 1 1/2 times the shingle/shake exposure. (All metal flashing should be painted galvanized or copper)
B. Apron counter flashing shall extend to within 1 ” of the surface of the finished roof.
C. Where saddles or crickets are formed in back of chimneys, curves or similar vertical surfaces, they shall be carried not less than 10″ under the shingles/shakes.
D. Step flashing shall be used where vertical surfaces occur in connection with slopes. They shall be formed of separate pieces. Flashing shall extend horizontally not less than 3″ and up the vertical wall so that they shall be lapped by the counter flashing not less than 4.” It shall be installed step fashion and each piece shall lap not less than 3.” If other than masonry is used the flashing shall extend up the wall not less than 3″ behind the sheathing paper.
E. Dormer flashing shall run 3″ up under the sheathing paper and not less than 3″ horizontally.
F. Window caps and all other projections at points where rain water accumulates must be provided with flashing, such flashing must extend a distance of at least 3″ up the wall behind the sheathing paper
G. All pipes projecting through roofs shall be flashed and counter flashed. These flashings shall extend 3″ up under the sheathing paper and not less than 3″ horizontally. They shall be of sufficient length to cover the shingle/shake course next below the pipe, and to extend up under the straight course above as far as possible without being punctured by nails. (Where plumbing vents are carried through roof surfaces, the plumber generally flashes them. The lead is carried up on the outside of the pipe to the top. Lead is carried up the pipe and cut off flush with the top of the pipe, and counter flashed with lead extending 4″ down the outside of the pipe and 2″ down the inside of the pipe.)
6. Hips and Ridges
All shingle/shake hips and ridges shall be of alternate overlap type applied at the same exposure as field of roof and with screws or nails long enough to penetrate into sheathing at least ½” (3/4″ per U BC). A layer of rubber based underlayment should be installed prior to the installation of the ridge cap.
A. Shingles/shakes extending into the valley shall be sawed to the proper miter.
B. Do not break joints into valley.
C. Do not lay shingles or shakes with grain parallel with the centerline of valleys.
D. All valleys shall be installed with shingles/shakes lapping the valley flashing not less than 7″ on each side.
E. On shingle roofs of less than 6/12 pitch, flashing should extend at least 10″on each side.
F. For shakes, metal valley sheets shall be center-crimped; of 20″ minimum width; underlain with a strip of rubber based underlayment or No. 30 felt over the sheathing. When spaced sheathing is used, the felt may be omitted under metal valley sheets.
G. Flashing shall be of copper or painted galvanized metal.
8. Nails and Nailing Shingles/Shakes
A. Nails shall be driven flush but not so that the nail head crushes the wood. They shall be placed approximately ¾” to 1″ from the side edges of the shingles/shakes and 1″ to 2″ above the butt line of the following course.
B. Each roof shingle/shake shall be secured with two full-driven, corrosion-resistant nails placed 1 1/2 inches from the edge. (Specify size.)
C. Use 6d ring shank nails for new roof with 16″ and 18″ shingles. (#6SSRS)
D. Use 6d ring shank nails for new roofs with 24″ shingles. (#6SSRS)
E. Roof shakes shall be secured with Micronized Copper Azole compatible stainless steel ring shank nail. Nails shall be long enough to penetrate sheathing at least 1/2″. 6d nails are usually adequate, but longer nails shall be used as shake thickness or weather exposure dictates.