ALLIANCE AVENUE 32RLS - Roof Membrane Leak Repair

ALLIANCE AVENUE 32RLS – Roof Membrane Leak Repair

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Complete repair guide for the ALLIANCE AVENUE 32RLS – Roof Membrane Leak Repair.

Parts & Tools You’ll Need

Step 1: Diagnose the leak with moisture testing

Use the Moisture Detection Meter to systematically scan the roof membrane, starting at the highest point and working downward in a grid pattern. Pay special attention to seams, roof penetrations (vents, antennas, skylights), and areas where the membrane shows visible cracks, blistering, or discoloration. Mark all suspected leak points with chalk or tape, and cross-reference your findings by checking the interior ceiling for water stains, soft spots, or mold growth directly below. Document the exact locations and severity levels—this data will guide your repair strategy and help you prioritize which penetrations require immediate attention.

Step 2: Prepare the roof surface thoroughly

Put on your safety rope and use the roof walk boards to distribute your weight evenly across the 32RLS’s roof surface—never walk directly on unsupported membrane sections. Use the Rubber Roof Primer + Cleaner Kit according to manufacturer instructions: spray or wipe the affected areas with the cleaning solution and allow them to dry completely (typically 15–20 minutes in dry conditions). Extend your prep zone at least 12 inches beyond each identified leak point to ensure proper adhesion of sealants and tape. Remove any debris, dirt, loose membrane, or old failed sealant with a plastic scraper—metal tools risk tearing the EPDM material.

Step 3: Seal roof penetrations with tape system

Unroll the EternaBond RoofSeal 4″ Tape Roll and cut sections 2–3 inches longer than each penetration’s diameter or seam length. Center the tape over the leak point, pressing down firmly with the Roof Seam Roller using steady, overlapping strokes to activate the adhesive and eliminate air bubbles. For vent pipes or antenna bases, wrap the tape in a spiral pattern, overlapping each wrap by 50% as you ascend the penetration. Press the tape edges down aggressively with the roller, applying firm downward pressure for at least 10 seconds per linear foot—inadequate pressure is the leading cause of tape failure.

Step 4: Apply self-leveling sealant to seams

Use the Dicor 501LSW Lap Sealant to fill any gaps or cracks along roof seams that weren’t addressed by tape alone. Apply a continuous bead of sealant using a caulking gun, maintaining a consistent ¼-inch diameter line along the entire length of compromised seams. The self-leveling formula will settle naturally into low spots and create a uniform surface; do not attempt to smooth or tool it manually, as this disrupts the polymer cure process. Allow 24 hours of curing time in temperatures above 50°F before moving to the next step—moisture or foot traffic during cure will compromise the seal.

Step 5: Prime and prepare for coating application

Once sealants have fully cured, apply a thin, even coat of primer from the Rubber Roof Primer + Cleaner Kit across the entire repair zone and extending 6 inches beyond the perimeter. Use smooth, overlapping brush or roller strokes and work in manageable 4×6-foot sections to maintain a wet edge and prevent lap marks. Allow the primer to dry to the touch (usually 2–4 hours depending on ambient humidity and temperature) before applying the topcoat. Check that the primed surface shows a uniform, matte finish with no glossy or thin spots—thin coverage will reduce coating durability.

Step 6: Apply two-coat EPDM membrane protection

Apply the first coat of Dicor EPDM Coating using a paint roller or brush, working in 3×4-foot sections with consistent, overlapping strokes to achieve 100% coverage with no thin spots or holidays. Maintain a thickness of approximately 15–20 mils per coat; a coat that’s too thin will fail prematurely, and excess thickness wastes material and may trap moisture. Allow the first coat to cure per the manufacturer’s instructions (typically 4–8 hours) before applying the second coat in the same manner, this time using perpendicular strokes to catch any missed areas. The final coating should present a uniform, smooth surface with a satin finish that blends seamlessly with surrounding membrane areas.

Step 7: Test repairs and monitor for reoccurrence

After the final coating has fully cured (minimum 24–48 hours), use the Moisture Detection Meter to confirm that previous leak points no longer register elevated moisture levels. Conduct a visual inspection of all taped seams, sealed penetrations, and coated areas under bright natural light, checking for cracks, separation, or adhesion failures. Monitor the interior ceiling during the next rain event or after running water on the roof in a controlled test—observe for any new water entry, stains, or dampness around the repair zones. Document the repair date and locations in your maintenance log, and plan to inspect these areas annually, especially after severe weather events or extreme temperature fluctuations.