Introduction to Void Filling Services

Are you in need of a reliable void filling solution that can cut off water leaks and maintain the structural integrity of your property? Gernatt Seawall and Soil Stabilization offers AP Fill 720, a polyurethane injection resin specifically designed to fill voids effectively and seal off water leaks.

What is AP Fill 720?

AP Fill 720 is a single component polyurethane injection resin used by Gernatt Seawall and Soil Stabilization. It is closed cell, hydrophobic, solvent and phthalate-free, low viscosity polyurethane that has been certified for contact with drinking water (NSF/ANSI/CAN 61). When it comes into contact with water, it reverts back to a liquid form and then quickly expands up to 40x - 50x its original size. This makes it one of the most effective void fillers on the market thanks to its ability to quickly react with water in order to create an effective seal.

Advantages of AP Fill 720

Aside from being certified for contact with drinking water making it safe for use outdoors near residences or business premises, there are many advantages of using AP Fill720’s polyurethane injection resin when compared to other options on the market such as foam-injection grouts which have several limitations due to their inability to expand on contact with water like AP Fill 720 does. Additionally, because AP Fill 720 is semi-rigid when cured and offers good chemical resistance, it provides optimal stability even in areas affected by extreme temperatures or weather conditions.


Whether you’re looking for a reliable solution for cutting off underground water leaks or stabilizing large cracks or voids around structures, our soil stabilization experts at Gernatt Seawall and Soil Stabilization highly recommend using AP Fill 720— for quick action sealing any leak you might have. With professional installation services from certified experienced personnel, fast setting times and guaranteed performance —there’s simply no better solution when it comes keeping your property dry!

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