A pliable material used to seal and secure glass panes in window frames, traditionally oil-based putty but now including modern synthetic compounds for better durability and weather resistance.
What is Glazing Compound?
Glazing compound is a flexible sealing material used to secure glass panes in window sashes and provide weatherproofing around the glass edges. Traditional glazing compound was oil-based linseed putty, but modern formulations include synthetic compounds that offer improved durability and easier application.
The compound forms a weatherproof seal between the glass and the window frame while holding the glass securely in place.
Key Features
- Flexible Sealing: Maintains elasticity to accommodate movement
- Weather Resistance: Protects against moisture and air infiltration
- Adhesion: Bonds to both glass and frame materials
- Workability: Can be shaped and smoothed during application
- Longevity: Modern compounds last decades with proper application
- Paintable: Can be painted over once cured for aesthetic finish
Benefits
Modern glazing compounds provide superior weather sealing compared to traditional materials, reducing energy costs and preventing moisture damage. They’re easier to apply than traditional putty and maintain their flexibility longer, reducing maintenance requirements.
The improved formulations also cure more predictably and are less likely to crack or shrink over time.
Common Applications
- Window Repair: Replacing old, deteriorated glazing compound
- Historic Restoration: Maintaining traditional window systems
- New Construction: Installing glass in wooden window frames
- Maintenance: Regular resealing of window glazing
- Greenhouse Construction: Sealing glass panels in garden structures
- Storm Window Installation: Securing glass in seasonal windows
For window maintenance tips, see the Glazing Wikipedia page.