Sazilast 25 (grey label) — polyurethane sealant for facade joints
Polyurethane sealant for facade panel joints; according to the data sheet, not used in roof elements or joints with prolonged water contact.

The winter formulation of Sazilast 24 Snezhinka makes it possible to seal panel joints and facade cracks at air temperatures from −20 to +25 °C. It is a two-component non-shrinking polyurethane sealant for above-ground parts of buildings; besides a spatula, it can be applied by brush. The joint withstands movement of ±25% and service from −60 to +70 °C, and the predicted service life is 10 conventional years. Kit — 16.5 kg.
| Manufacturer | Sazilast (SAZI) — OOO PK “SAZI”, Ramenskoye |
|---|---|
| Type | joint sealants |
| Use | joints and junctions |
| Base | two-component non-shrinking polyurethane sealant (A — polyol, V — polyurethane prepolymer) |
| Colour | white, grey |
| Packaging | 16.5 kg kit |
| Application method | mix components A and V with a low-speed drill at 300–350 rpm for at least 10 min; in cold weather condition to +15…+25 °C before mixing; do not add solvents or water; substrate damp but not wet, cleaned; a compressed polyethylene foam backer rod is placed in the joint (no three-sided adhesion); apply by spatula; working layer from 3 mm to 1/2 of the joint width |
| Application temperature | from −20 to +25 °C |
| Curing | pot life at least 5 h at 23 °C; full cure 7 days at 23 °C |
| Key properties | permissible movement amplitude ±25%; nominal tensile strength at break at least 0.2 MPa; elongation at break at least 300% (on joint specimens); cohesive failure; Shore A hardness after 24 h 20–30; flow not more than 3 mm; density 1.6 g/cm³; dynamic viscosity (0.3 / 13.5 s⁻¹, 25 °C) at least 850 / not more than 65 Pa·s; service from −60 to +70 °C; predicted service life 10 conventional years (3 mm layer, ±25%) |
| Layer thickness | working layer at least 3 mm, not more than 1/2 of the joint width |
| Consumption | 96 g/linear m (20 mm joint, 3 mm layer) |
| Shelf life | 6 months at −20…+30 °C in undamaged packaging, protected from moisture, dust and direct sunlight |
| Standards | STO 032-37547621-2016; GOST R 59522-2021, classes 1 and 3P; certificate of conformity for “Sazilast 24” (manufacturer OOO PK “SAZI”, production — Ramenskoye) |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Polyurethane sealant for facade panel joints; according to the data sheet, not used in roof elements or joints with prolonged water contact.
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