Semin CE 78 Joint Filler 120’ is a powder jointing compound developed for tapered-edge plasterboard joints, used in conjunction with jointing tape. It offers an extended working time of up to 120 minutes, making it ideal for larger areas, steady-paced finishing, and reducing waste on busy sites. The compound mixes to a fine white paste, is easy to apply, and is formulated for low shrinkage with a smooth sanding finish.
Key Benefits
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Extended working time (120 minutes) – ideal for bigger rooms and longer runs
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Fine white finish for clean, professional joint lines
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Easy to sand, helping achieve a smooth final surface
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Low shrinkage for stable joints and reduced risk of read-through
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No cracking up to 5mm thickness (for small fills / local corrections)
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Reaction to fire: A1 (non-combustible classification)
Typical Uses
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Jointing tapered-edge plasterboard with jointing tape
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Filling gaps and imperfect board junctions prior to taping
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Covering and finishing screw heads
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Suitable for plasterboards with or without insulation backing (glass wool, rock wool, polystyrene)
Suitable Substrates
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All standard plasterboards with tapered edges and paper face, including boards with bonded insulation backings.
