Amerimax Home Products 85128 Gutter Sealant 3 Oz

Product Description

The AMERIMAX HOME PRODUCTS 85128 is a 3-ounce silicone gutter sealant sold under the SeamerMate name. It functions as a non-corrosive, single-component coating and encapsulating compound designed to seal gutter seams, joints, and connections. The formula is high-solid and low-odor, curing to a low-modulus, flexible, rubber-like solid that moves with the gutter through thermal expansion and contraction cycles. It ships ready to use with no mixing required. Roofing contractors, gutter installers, and experienced DIYers apply this product to stop leaks at end caps, outlets, and lap joints in residential gutter systems.

This sealant is suited for residential gutter repair and installation work. It performs in both new construction and retrofit applications where a durable, watertight seal is needed at metal or vinyl gutter seams. Because the cured material remains flexible, it holds up against the seasonal movement common in aluminum and steel gutter runs. A single 3-ounce tube is sized for targeted spot repairs or small seaming jobs on standard K-style and half-round gutter profiles.

Key Features

• Single-component formula — no mixing, ready to apply straight from the tube
• Non-corrosive silicone base safe for use on aluminum, steel, and vinyl gutter materials
• Cures to a flexible, low-modulus rubber-like solid that accommodates thermal movement
• High-solid content provides a durable, long-lasting seal at seams and joints
• Low-odor formulation suitable for use in occupied residential settings

Compatibility

Designed as an OEM-style sealant for residential gutter seam and joint sealing applications across common gutter profile types.

Installation Notes

Gutter installers and roofing contractors typically apply this product. Clean and dry the seam area thoroughly before application — dirt, moisture, and loose debris will prevent proper adhesion. A caulk gun sized for standard tubes is the typical application tool. Allow adequate cure time before exposing the sealed joint to water.