JOINT FILLER
PLASTER ST-103
ST-103 Joint Filler Plaster is a specially formulated, high-adhesion and flexible compound developed to fill the gaps between gypsum boards (drywall), reinforce the joints, and prepare the surface for paint or final coating applications.
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Between gypsum board (drywall) joints,
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For screw head covering and surface repairs,
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For surface leveling before paint or satin plaster,
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On interior wall and ceiling applications.
Application Area
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High adhesion strength — provides excellent bonding to gypsum boards.
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Crack-resistant with low shrinkage.
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Easy to apply and spreads evenly.
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Fine-grained structure ensures a smooth surface.
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Fast drying and easy to sand.
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Does not dust or blister.
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When used with joint tape, it maximizes joint durability.
Features
Technical Specifications
Physical Appearance:
Water/Gypsum Ratio:
Initial Setting Time (td):
Final Setting Time:
Bulk Density:
Flow Diameter:
pH (for 1 L measured container):
Flexural Strength (min):
Compressive Strength (min):
Adhesion Strength (min):
Reaction to Fire:
Consumption Rate:
Application Thickness:
White Powder
6 L water / 10 kg plaster
min. 20 – max. 60 min
(t₃) 60–80 min
650–700 g/L
145–165 mm
6–7
≥2.0 N/mm²
≥0.3 N/mm²
A1
0.2 kg/m² (ceiling), 0.6 kg/m² (partition wall)
1 mm