Enviroshake® APPLICATION INSTALLATION GUIDELINE

Warning: Do not proceed with installation of the Enviroshake® roof until you have thoroughly read these instructions and reviewed the installation diagrams. If you have any questions or concerns related to the installation procedures outlined below, please call our toll free number (1.866.423.3302) for assistance BEFORE starting your project. An installation video is available for viewing online at www.enviroshake.com or by calling the toll free number. Wellington Polymer Technology Inc. (WPTI) is not responsible for any costs incurred by the customer associated with improper installation procedures.

Enviroshake® is designed to replicate the look of natural weathered cedar. No two shakes are exactly alike and will vary in shading due to the unique materials and manufacturing process employed by Wellington Polymer Technology Inc. It is therefore required that the installer open and thoroughly mix (“shuffle”) the contents of a minimum of 10 to 15 bundles at a time on the ground before they are delivered up to the roof and apply the shakes from this mix at random, as you would do with real cedar, to insure a blended natural look on the roof. Select these bundles at random by taking some from each of the pallets you received with your order to further vary the mix. Do not begin installation until you have received your order in its entirety and the product has been shuffled.

Wellington Polymer Technology Inc. recommends that snow guard devices be installed in conjunction with Enviroshake® in areas where there is a significant risk of snowfall accumulation and the possibility that a buildup of snow could slide off the roof causing inconvenience or harm to life and property. Please consult with your roofing contractor regarding the risk factor in your
area and the appropriateness of installing these devices on your home.

The following is intended as a guide to the installation of Enviroshake®. Where applicable, local building code requirements will always take precedence and must be adhered to.

UNDERLAYMENT

Before applying the underlayment, nail a drip edge along the eaves. Ice/water barrier material (36 in.) is then placed on the lower portion of the roof overlapping the drip edge. Cover the area of roof above the ice and water barrier with 15 pound felt* with the bottom edge of the felt overlapping the ice and water barrier. After the felt is laid, nail drip edges along the rakes. Nail the top edges of the felt strips into the sheathing every 6 feet or so.

Enviroshake® is typically installed in straight, single courses at a 9” exposure. The “starter course” is a row of any 12” wide Enviroshake®. The butt (thick) end of the starter course should project ½” beyond the fascia/drip edge. It is important for the first course of shakes to be straight. To align, let the first one overhang the drip edge and nail it down. Place another shake the same way at the other end of the roof. Tack a string to the butt end of both shakes and align the butts of the intervening shakes on the string. To insure that your courses remain straight, snap a chalk line every course. Space the shakes 3/8” apart (similar to spacing on split shakes). Nail where indicated by the “O” mark on the nailing strip of each shake. Apply a second course of shakes directly over the starter course so the butt of the starter course is even with the butt of the second course. The joint between 2 shakes in one course should never be closer than 1 ½” to a joint below or above it. This also applies to shakes with simulated joints (as found in our 5-7 split- shake profile, for example).

Beginning with the first full course of shakes, apply an 18” strip of 15 pound felt* over the top portion of the shake. The bottom edge of the felt should be positioned 17” up from the butt (so felt covers the top 3” of the shake), and continue up the roof, laying felt over the top portion of each consecutive row of shakes. Snap shakes on simulated keyway periodically and install individual snapped pieces to further vary the widths and avoid creating a diagonal pattern as you work your way up the roof. Do a visual check from the ground every few courses.

Note: It is important not to exceed a 9” exposure.

Stainless steel nails are preferred for longevity however the use of hot dipped galvanized or electro-galvanized roofing nails is acceptable. Shakes are secured with 2 nails, no matter how wide the shakes are. (i.e. 4-8 split shakes would therefore require 4 nails). Always nail where indicated by the “O” mark on the nailing strip. It is important that the head of the nail not be driven below the top surface of the shake at any time. If you are using a power-nailer, adjust the setting to prevent this situation from occurring.

When you nail the final 2 courses on the ridge, the ends will extend above the ridge. Snap a chalk line flush with the ridge and cut all the shakes at once with the circular saw.

Shakes must be cut in order to fit properly around vents, along the rake, in valleys, and beside flashing. Shakes should be cut with a circular saw for straight lines or with a saber saw for curves. Use only uncut factory edges kept flush along rake/gable ends.

*Note: In some areas, 30 pound felt is required. As an alternative to felt, an approved plasticized type underlayment may be used where building codes permit. Please check your local building code for requirements in your specific region .

VALLEY/RIDGE CAPS

Use 24” wide W-flashing (recommended minimum 24 gauge) in the valleys. Copper is recommended for added longevity, however galvanized or painted aluminum is acceptable. Apply ice and water barrier material (36”) in the valley and along the rakes prior to installing the flashing. Care should be taken not to nail through shakes too close to the edge along valleys. To keep shakes along the valleys straight, use a 1” x 4” board as a guide. Place the board in the valley, one side flush against the dividing ridge in the middle. This will provide an ample space for runoff on both sides of the valley. Shakes on the left side of the valley have to be cut individually as you arrive at the end of each course. Follow the same procedure for the right side. Lay the last shake at the valley over the 1 x 4, score a line across the shake and cut. Position the 1 x 4 and lay out the bottom shake. Mark and cut, then use it as a pattern to cut all the other shakes, several at a time. Select full 12” shakes for this. If not using a ridge vent, cover the ridge with ice and water barrier material prior to applying the caps. Ridge caps are maximum 9” exposure and are fastened in a similar manner with 2 nails (min. 2 1/2”).

Caution – Do not walk on an Enviroshake® roof when moisture/frost is present as the roof surface will be slippery and greatly increases the risk of a slip and fall.