E-Curb™ Penetration Seal System

E-Curb precast form components are composed of light weight nylon resin. The E-Curb is 2-inches high and is available in a variety of shapes and sizes. Standard sizes include bisected circular pieces with inside diameters of 3, 4, 5, 6 or 9 inches; corner pieces with a 2-inch radius; straight pieces in 3-inch or 8-inch lengths; and a 4.5” x 3.4” rectangle. The outer surface is impervious to ice, corrosion, UV (ultraviolet) light and ponding water.

PRODUCT DETAILS

E-Curb penetration seals replace old-style metal pitch pans with versatile, precast components and pourable sealants. CHEM LINK’s E-Curb System can usually be installed in under 15 minutes and never requires flashing or mechanical attachment.

E-Curbs are designed for use on granulated modified bitumen, asphalt and coal tar B.U.R. (built up roofing). E-Curbs are specified for PVC, EPDM, PIB, and TPO single ply roofing membranes. E-Curbs are highly versatile for sealing penetrations around solar panel
mounts, HVAC, Electrical, and any type of structural supports. TPO Primer is required for use with TPO single-ply roof membrane.

When installed properly, this system forms a durable, waterproof rubber seal around penetrations. An extended manufacture warranty against leaks is activated with submittal of a completed warranty card.

E-Curb System Components

• E-Curb exterior rings, straights, and corners.
• M-1 Structural Adhesive/Sealant used for bonding the E-Curb components, sealing and priming the penetration.
• 1-Part “moisture cure” pourable sealer, used to form a durable, water-tight seal around the roof penetration. US Patent No. RE41,586

E-Curb precast form components are composed of light weight nylon resin. The E-Curb is 2-inches high and is available in a variety of shapes and sizes. Standard sizes include bisected circular pieces with inside diameters of 3, 4, 5, 6 or 9 inches; corner pieces with a 2-inch radius; straight pieces in 3-inch or 8-inch lengths; and a 4.5” x 3.4” rectangle. The outer surface is impervious to ice, corrosion, UV (ultraviolet) light and
ponding water.

M-1 Structural Adhesive/Sealant is a durable, selffixturing moisture cure mastic. Cartridges of M-1 are supplied in each E-Curb Kit. Components are also sold separately.

1-Part is a highly flexible, self-leveling moisture cure pourable sealer that eliminates mixing. It is also 100% solid rubber, has a very low VOC content, will not melt or shrink, and is resistant to deterioration. It is supplied in 10.1-oz and 28-oz cartridges or 1/2 gallon pouches.
Unused sealant can be capped and reused.

INSTALL INSTRUCTIONS

APPLICATION

Bonding surfaces should be clean, dry and free from all contamination that may inhibit the sealant’s performance. Remove all previously applied caulk, mastic, cement, asphalt, and other contaminants from penetrations with a wire brush. Brush away all gravel or loose granules. Isopropyl alcohol is an effective cleaner for surface preparation. Please contact customer service for application guidelines with temperatures below 32°F (0°C). Do not use on TPO without the use of TPO primer. Do not use on Hypalon. Smooth APP membranes require a granulated target. This product sets rapidly upon exposure to moisture. Please refer to data sheet for step-by-step installation guidelines.

Step 1
Remove all previously applied caulk, mastic, cement, asphalt, and other contaminants from penetrations with a wire brush. Clean all smooth substrates with isopropyl or denatured alcohol. Brush away all gravel or loose granules. Seal the base of each penetration with M-1. Coat penetrations with M-1 to 3” above the roof line.

Step 2
Hold a section of E-Curb, flat side up, and apply a 1/4” bead of M-1 to the entire bottom perimeter. Apply 1 additional 1/4” bead of M-1 down the center of the section. Do not tool the beads flat. Place the E-Curb section on the roof surface to form a half circle around the penetration(s). Press down firmly until M-1 extrudes from the outside edges.

Step 3
Apply M-1 to the second section of E-Curb as described above. Place the second section of curb on the roof surface to form a circle with the first section. Press firmly in place until excess adhesive extrudes from the outside edges. Apply a bead of M-1 around the outside base of the installed E-Curb, and tool to form a smooth fillet. For non E-Curb penetrations seals, add M-1 to scarf joint surfaces and tool smooth.

Step 4
Cut tip off 1-Part cartridge at widest point on plastic nozzle and pierce the foil seal. Insert into caulking gun and pump E-Curb full. When using a 1-Part pouch, remove cap, pour, squeeze out excess air, and reseal.

Note: To provide an adequate rubber seal, maintain a 1” distance between penetrations and inside edge of the E-Curb.