Bostik Pro Sealants S41 Window & Door Frame Silicone

Discover the professional-grade performance of Bostik Pro Sealants S41 Window & Door Frame Silicone, specially formulated to provide a durable and flexible seal for window and door frame joints. Designed for both interior and exterior applications, this high-quality neutral cure silicone ensures a secure, long-lasting bond that adapts effortlessly to structural movements and environmental changes.

Whether you're a professional contractor or tackling DIY home improvements, the Bostik S41 delivers excellent adhesion, weather resistance, and flexibility to withstand daily wear and tear, preventing drafts, moisture ingress, and heat loss.

Features & Benefits

• Professional grade neutral cure silicone sealant

• Developed specifically for window and door frame joints

• Low modulus with up to 25% movement flexibility

• UV and weather resistant for long-lasting exterior use

• Suitable for both interior and exterior applications

• Neutral cure formula to prevent corrosion on sensitive substrates

• GEV EMICODE EC1 PLUS certified for very low emissions – eco-friendly

• Supplied in eco-friendly post-consumer recycled (PCR) cartridge packaging

• Size: 310ml cartridge

• Colour: Clear

Applications

• Sealing window frame joints to prevent drafts and water ingress

• Door frame sealing for airtight and weatherproof finishes

• Suitable for use on materials like PVCu, wood, aluminium, glass, and masonry

• Ideal for both new installations and repair or maintenance work

• Suitable for residential and commercial construction projects

FAQs

Q1: Is Bostik S41 suitable for outdoor use?

A1: Yes, Bostik S41 is UV and weather resistant, making it ideal for exterior window and door frame sealing.

Q2: Can this sealant accommodate building movement?

A2: Absolutely. It offers up to 25% movement flexibility, making it perfect for joints that experience structural movement.