PandaCoat TopBase ST Fiber glass-fibre reinforced silicone waterproofing, grey, 1 kg

Chimney, joint or detail leaking again, and a thinner coating would run off?

PandaCoat TopBase ST Fiber is the glass-fibre reinforced version of TopBase ST for vertical surfaces and details: chimneys, gutters, joints and sloped areas. The glass fibre thickens the silicone to a non-sag, paste-like consistency, so the coating stays on vertical surfaces and does not slide down.

Why TopBase ST Fiber

Non-sag consistency for verticals and details
Glass fibre thickens the silicone – the coating stays on chimneys, upstands and joints without running, even when applied vertically.

Better crack bridging
The thicker consistency reliably seals small details and cracks where a thinner coating would be too weak.

Resistant to all weather
The cured membrane withstands UV, rain, snow and temperatures from -30 °C to +80 °C.

Easy to use – usually no primer
Apply with a brush or roller in 2–3 thin coats. Primer is usually not needed on ceramics and metal; on concrete Primer VL is recommended, on bitumen Primer VL 2K.

What it is

One-component, glass-fibre reinforced silicone coating – the same TopBase ST chemistry (silane-based), only thicker and non-sag. Cures with atmospheric moisture into a strong, elastic, watertight membrane. Used as a complement to TopBase ST for details or on its own for smaller/vertical areas.

Where to use

• Chimneys, gutters, roof joints and upstands
• Sloped and vertical surfaces where a thinner coating would run off
• Small cracks and damaged spots
• Camper and trailer roofs, farm buildings, terraces
• Concrete, metal, ceramic, wood and glass surfaces
• Extra reinforcement of flat roof details together with TopBase ST

Technical data

• Relative density: 1.265 g/cm³
• Dynamic viscosity: 1800–2200 cP
• Flash point: 67 °C
• Service temperature: -30 °C to +80 °C
• CLP 1272/2008 classification: not hazardous (supplementary statements EUH066, EUH208)

Application

The substrate must be clean, dry and free of dust and grease (concrete moisture <5%). Primer is usually not needed on ceramics and metal; on concrete Primer VL is recommended, on bitumen Primer VL 2K. Reinforce joints beforehand with TopBase ST Paste.

Apply TopBase ST Fiber with a brush or roller in 2–3 thin coats, 3–48 h between coats depending on conditions. Skin forms in approx. 2 h.

Note: this is the TopBase ST version for details and verticals – use it alone for small areas or together with standard TopBase ST, not as a replacement for a whole roof.