Double Glaze Bead - 9.5

About Double Glaze Bead - 9.5

A double glazing bead 9.5 x 16 mm in uPVC profiles is a specialized strip designed to securely hold double-glazed glass units (two panes of glass separated by an air or spacer gap) within the window or door frame, ensuring proper insulation and stability. This bead size refers to its width and height9.5 mm x 16 mmmaking it suitable for use in standard energy-efficient uPVC windows and doors.

Purpose and Use

• Double glazing beads accommodate a greater depth to hold two panes of glass with a spacer, enhancing thermal and acoustic insulation compared to single glazing.
• The 9.5 x 16 mm bead is commonly used in sliding or casement uPVC systems, typically paired with glass combinations like 4 mm + 12 mm air gap + 4 mm glass.

Technical Aspects

• This bead is usually co-extruded with or without a gasket, helping create an airtight and watertight seal when pressed into the window profile.
• Designed for internal beading (improving security by preventing glass removal from outside), although external beading variants exist.
• Manufactured in colors to match the uPVC profiles for aesthetic consistency.

Benefits

• Improves energy efficiency by reducing heat transfer and preventing drafts.
• Enhances noise reduction and increases security compared to single glazing beads.
• Easy to install with clip-on or push-in options, and suited for both residential and commercial applications.

For fabricators and installers, correct selection of bead size and typelike 9.5 x 16 mmis crucial for proper glass fit, long-term durability, and meeting performance standards for double-glazed uPVC windows and doors.