Glazing Joints

Key Takeaways: 

  • Use sealants specially designed for the connection joint between window frames and glass, including between two panes of glass.  
  • Requires exceptional UV and weather resistance, and strong adhesion to modern frame materials (PVC, coated aluminium, wood).  
  • Examples of suitable products include Soudal All Purpose Silicone and Soudal Glass & Ceramic Silicone.  
  • Always check for compatibility with frame material and sealant type (neutral‑cure vs acetic‑cure) for best longevity.  

Sealing Joints in Façades & Glazing Applications:

When sealing glazing joints, the demands are high: glass expands and contracts, frames shift subtly with temperature fluctuations, and joints must seal tightly against moisture, air, and dirt ingress. A good glazing sealant must stick reliably to glass and frame materials like PVC, coated aluminium or timber, and retain its elasticity and adhesion under constant UV and weather exposure.

Products such as Soudal All Purpose Silicone deliver neutral‑cure flexibility and UV stability for a wide range of glazing tasks, while Soudal Glass & Ceramic Silicone offers acetic‑cure performance for glass‑to‑glass or glass‑to‑metal joints, combining fast skinning and excellent adhesion. These sealants are formulated for demanding environments and help maintain the integrity of the window installation and the building envelope. 

FAQs

What sealant should I use for a PVC‑to‑glass frame joint?

Choose a neutral‑cure vinyl‑compatible product like Soudal All Purpose Silicone for best adhesion and flexibility.

Can I use acetic‑cure sealants on aluminium frames?

Yes, products like Soudal Glass & Ceramic Silicone work well on aluminium and glass, but ensure substrate compatibility.

How do these sealants handle UV exposure?

Both of these sealants are designed to be UV‑resistant and retain elasticity and colour over time.

Are there paintable glazing sealants?

 Typically glazing sealants are not designed to be painted due to exposure; if painting is required, check with the manufacturer for specific paint‑compatible variants.