The Polyfilla Professional M40 Gap Sealant is a flexible sealant made for filling and sealing gaps where movement might cause ordinary fillers to crack or fail. It uses a special polymer formula that stays flexible under stress and adheres well to many building surfaces. This makes it suitable for interior and exterior use around door frames, architraves, skirting boards and other joints before painting.

Key Features

• Flexible gap sealant designed for high‑stress applications with up to ±20% joint movement

• Excellent adhesion to timber, plasterboard, masonry and aluminium

• Paintable after approximately 40 minutes for faster project progress

• Works on both interior and exterior gaps and joints

• Durable, polymer‑based formula resists cracking and separation