SealBoss 1570 Flexible Water Stop Foam

Product Description

SealBoss 1570 Flexible Water Stop Foam mixed with SealBoss 15x Accelerator is a flexible hydrophobic, water-activated (hydro-active), water cut-off grout and leak-seal foam grout based on a MDI polyurethane. The elastomeric polymer resin is 100% solvent free and 100% solids. The gel-time of the product is adjustable by the mandatory adding of a certain percentage of SealBoss 15x Accelerator.  SealBoss 1570 Water Stop Foam is NSF/ANSI 61 Drinking Water Contact Approved.

Upon contact with water SealBoss 1570 Water Stop Foam reacts to a flexible foam while expanding its volume 30 to 40 times. The cured material is of a constant volume. Since water is not a component of the foam structure, the cured material is essentially not effected by water or dryness. The reacted material  does not shrink or swell.

Depending on the amount of accelerator added and the pressure of injection, SealBoss 1570 Water Stop Foam reacts to a dense, closed cell, semi rigid material or a more open cell, semi flexible product. For best waterproofing results the closed cell structure is desired. SealBoss 1570 Water Stop Foam is designed for sealing seeping water leaks and for cutting off water in cracks and joints. Due to the low viscosity of the material, SealBoss 1570 Water Stop Foam offers superior penetration in hairline crack injection. The product is suitable for the filling of spaces, cracks and honeycombing in stone or concrete structures. To achieve most satisfying and permanent results in certain applications, a combination of SealBoss 1570 Water Stop Foam with other systems of our product line may be advised. Ask your SealBoss technician for details. The product is for professional use.

Installation Guidelines

SealBoss 1570 Water Stop Foam and the SealBoss 15X Accelerator are supplied separately to allow adjustment of gel-time. It is mandatory to add SealBoss 15X Accelerator to ensure a complete reaction as designed. A higher percentage of Accelerator added will increase reactive speed, expansion volume and will lower the density of the product accordingly. The accelerator system offers a very flexible range  of reactive properties, gel-time and expansion rate which make this product extremely versatile for many applications.

Since the end product is of cellular structure, a higher density is favored for best waterproofing properties. Recommended mix ratios are between 3% and 10% of Accelerator added. In  situations of high water flow rates and /or low temperatures, ratios may be increased to 20%. For hairline crack injection and soil stabilization ratios may be lowered to less than 5%.

Observe temperature and humidity of the environment, since both determine the pot-life of the premixed batch. Do not mix more material than the amount that will be pumped within reasonable time. Rule of thumb: High temperatures and high humidity decreased gel-time.

SealBoss 1570 Water Stop Foam reacts with the moisture in the structure and does not need large amounts of water to react. Simultaneous injection of water is typically not necessary. If the area of application seems to be completely dry,  pre-injection of water may be recommended in some circumstances.

All equipment, pumps and hoses must be dry. Avoid moisture contact with the mixture to prevent premature reaction. If product foams while pumping, immediately shut down the machine and flush with a cleaner to avoid built up and clogging of the equipment.