Note: The Weather Guard roof panels have tongue and groove edges (Figure 9.1), which interlock with each other for a snap-lock fit. Your Weather Guard Roof will arrive in increments of 4' panels. Most Weather Guard roofs will be longer than the length of the bottom track to allow for the overhang of the roof. The overhang should be less than 12". You may also have roof panels that contain a fan beam concealed within it. Make sure you properly place the panel with the fan within the room. Double-check the CThru Room Layout sheet for the correct size of the roof for beam placement and attachment channel cut sizes.

9-1A. STRAIGHT ROOF -installing the First Roof Panel
Cut off the tongue section of the first Weather Guard roof panel to allow for side attachment (Figure 9.1). Start at either end of the room and place this Weather Guard roof panel (with the cut side facing out) into the roof attachment channel. Push the roof panel until it meets the back of the roof attachment channel. Fasten the panel to the roof attachment channel with #8 x 1/2" tek screw every 16" (Figure 9.3, Detail "B").

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APPENDIX:

9-2. Plumbing and Securing the Roof Panel to the Front Wall
Before attaching the front of the roof panel to the front wall header beam, plumb the front wall with a level (Figure 9.3, Detail "A"). The 3" roof panel will be attached from the top of the roof panel using #14 x 4' tek screws with sealing washers (use 5" screws for the 4" roof, and 7" screws for the 6" roof) (Detail "C"). To find the location for the screws, measure the length of the overhand on the bottom of the roof panel. Add 3/4" to this length and mark the top of the roof panel. This will be the attachment location and allow you to avoid fastening into the electrical raceway. Secure each roof panel with two screws located 4" from the edges of the panel (make sure to account for any overhand). Finishing securing the roof panels with screws spaces as dictated by the engineering specifications (see Section 9-4).

9-3. Installing the Second and Subsequent Roof Panels
Clean the next roof panel's tongue edge and apply sealant along the entire length of the roof panel. Place the panel parallel to the first, 3" away form the roof attachment channel and overhanging the header beam. Push second panel into the first panel until the tongue and groove are interlocked (Figure 9.4). Fasten the roof panel to the attachment channel with #8 x 1/2" tek screws every 16". Then attach the roof panel to the header beam as outlined in section 9-2 on the previous Sunrooms. Follow this procedure until all of the roof panels are installed.

Hint: To make the electrical wiring installation easier, run the wiring through the fan beam of the Weather Guard roof panel at the time of the installation.

9-4. Fastening the Seams and the perimeter of the Roof Panels
The fastener type and spacing along the seams of the roof is dictated by ICC-ES Legacy Report 1968 and vary depending on projection and loading. These charts are also available in the standard engineering plans. Fastener spacing on the perimeter to the electrical washers.

Note: Seal all of the Weather Guard seams with a small bead of silicone, for a second weather tight seal. Additionally, seal the top junction of the Weather Guard panels to the outside lip of the roof attachment channel. CThru also offers a roof seam tape that is intended to supplement the silicone bead and not replace it.

9-5. Gutter, Side Fascia Attachment, Gable Cap Piece
There will be a front gutter, side fascia, or drip edge that will cover the outside perimeter of the Weather Guard roof. These pieces will arrive in stock lengths and will need to be cut to size. Cut to length and secure the gutter side fascia, or drip edge to the roof with #8 x 1/2" tek screws at 24" on center, top and bottom (Figure 9.5). Use sealant on all corners and junctions. Screen material can be splined into the gutter to act as a leaf guard. The gabled roof will also arrive with a 45-degree outside corner. This piece is used to cover the cut made into the roof panel at the gable peak. Cut the 45-degree outside corner to length, secure it with #8 x 1/2" tek screws, and seal.

Note: The side fascia or drip edge should extend to the house wall simply cut the attachment "legs" where the side fascia will overlap the roof attachment channel.

9-6. Downspout Attachment
Note: Downspouts should be installed after the room is complete.

Downspouts and elbows will be required at the corners of the gutter to channel water away from the foundation. Run a bed of silicone at the junction of the roof panel and the fascia. At the point of the downspout, use a hole saw to drill a hole for the downspout dropout in the gutter. The dropout should be secured and sealed to the bottom of the gutter. Any necessary elbows and downspouts should be added to the dropout. The downspout connector should be secured to the front of the outside corners to accept the downspout (Figure 9.6).

Note: If the roof designed of the house is such where water will be channeled to the area above the sunroom, additional downspouts may improve drainage form the roof.

Note: The gutters should be cleaned and freed from clutter if no leaf guard is added.