What about leaks, no Gaskets? No Gaskets Needed! – See Why Also No Vent Tape Required
*Bronze polycarbonate expands dramatically – Consult with sales person before using
• Where do I use silicone? Minimal use of silicone is required. See drawings for the areas we suggest using silicone. Do not use silicone under Cap, except at lower edge of roof.
• How do I determine quantity of silicone required? One tube of silicone will produce 25 linear feet of 1/4″ x 1/4″ silicone bead. We sell plastic compatible, 100% silicone.
• My existing rafter framing is 4 ft. on-center, but the sheet is 4 ft. wide, I would like to use your Base & Cap System, what do you suggest? You can cut the sheet down to 47″.
• Where is Aluminum Tape used? Aluminum tape is generally used to seal the channels of polycarbonate at the top edge of roof sheets and top of gable end wall sheets. Flashing typically covers the top of the roof sheets (see Lean-To Ridge & Freestanding Ridge). The Corner Trim covers the top of gable end wall sheets and the edge of the roof sheets, at this transition. Use of the U-Profile in these applications would prevent flush fitting of Corner Trim, use aluminum tape and cover with Corner Trim (see Roof Corner. Please note, some applications such as a patio roof may necessitate use of U-Profile at the top edge of roof sheets.
• Please offer some suggestions for purchasing ridge flashing. Use the Lean-To Ridge & Freestanding Ridge details as a guideline. Print the page if the detail is appropriate for your application. Do a scale drawing of the flashing needed for your ridge. Draw so that the leg(s) of the flashing are tilted down 5° from the actual pitch of your roof. This will create a small amount of pressure against the polycarbonate sheet, useful in achieving a watertight installation. Sheet metal should be a minimum of .019″ aluminum or 30 gauge steel. Aluminum is easy to fasten through, easy to cut, but is a little flimsy and care is required in handling. Steel is more sturdy, harder to cut and requires pre-drilling prior to fastening. Availability at your local sheet metal shop may be the limiting factor. Look in the Yellow Pages under Sheet Metal Work.
• Do you offer any type of sealing or flashing material, other than silicone, for side of polycarbonate meeting existing roofing or wall. Carlisle Hardcast manufactures a 15 mil Butyl Adhesive Roll Roof Flashing Tape (Foil-Grip) that is used for a variety of roofing applications. This tape comes in 3″ an 6″ wide, and is available with an aluminum foil backing. Install the polycarbonate so it almost meets adjacent material and cover the joint with the Flashing Tape. Make sure the polycarbonate is securely fastened to the structure below with the screws we sell. See pdf version of Foil-Grip tech & install data sheet.
Installation see Install Guide in Adobe Acrobat.