Accurately measuring double glazed unit thickness is essential when replacing damaged or inefficient glazing. It ensures the replacement unit fits perfectly, maintaining the window’s energy efficiency and aesthetics. Here’s a comprehensive guide on how to measure double glazed unit thickness with precision, saving time and avoiding costly errors.
How to Measure Double Glazed Unit Thickness: Why Measuring Thickness Matters
Getting the correct thickness ensures:
- Energy Efficiency: A precise fit prevents draughts and maintains insulation.
- Structural Integrity: The unit fits securely without straining the frame.
- Aesthetic Consistency: Avoids visible gaps or mismatched panes.
Tools You’ll Need
- Glass Thickness Gauge: A specialised tool for precise measurements.
- Tape Measure: For frame and overall dimensions.
- Calipers: Useful for detailed measurements.
- Pen and Notepad: To record your readings.
Step-by-Step Guide for How to Measure Double Glazed Unit Thickness
1. Understand the Unit Composition
A double glazed unit typically consists of:
- Two glass panes.
- A spacer bar between the panes (filled with insulating gas or desiccant).
The total thickness includes the glass, spacer, and any coatings or sealants.
2. Use a Glass Thickness Gauge
- Place the gauge against the glass pane.
- Align the gauge with the reflection to measure each pane’s thickness.
- Add the spacer bar’s width to determine the total thickness.
3. Estimate Without a Gauge
If a glass thickness gauge isn’t available:
- Use a tape measure to measure the total depth of the frame’s rebate where the unit sits.
- Deduct 5mm–10mm for the frame’s allowance to estimate the unit’s thickness.
- Be cautious, as this method may lack precision.
4. Measure the Spacer Bar Width
- Look at the edge of the glass where the spacer is visible.
- Use a ruler or calipers to measure its width.
- Common spacer widths include 6mm, 8mm, 10mm, and 12mm.
5. Confirm the Total Thickness
Add together:
- The thickness of both glass panes.
- The width of the spacer bar.
For example: If each glass pane is 4mm thick and the spacer bar is 12mm, the total thickness would be 20mm.
How to Measure Double Glazed Unit Thickness: Common Unit Thicknesses
- 20mm: Common for older double glazing units.
- 24mm: Standard for modern units.
- 28mm or More: Often found in triple glazing or high-performance systems.
Tips for Accurate Measurement
- Clean the Glass: Ensure the surface is clear to avoid errors.
- Double-Check Readings: Repeat the measurement process to confirm accuracy.
- Use a Professional Service: If unsure, consult an expert like Cove Glass for precise measurements.
How to Measure Double Glazed Unit Thickness: Why Professional Measurements Matter
While DIY methods can work, professional services offer:
- Precise and reliable measurements.
- Compatibility checks for modern glazing standards.
- Expert advice on replacement options.
Contact Cove Glass today for expert assistance with your double glazed units.
How to Measure Double Glazed Unit Thickness: FAQs
Q1: Can I measure double glazed thickness without removing the unit?
A1: Yes, using a glass thickness gauge or by visually inspecting the spacer bar and estimating the glass thickness.
Q2: What if the unit is misted or damaged?
A2: Contact a glazing professional to assess and measure the unit accurately for a replacement.
Q3: Are thicker units always better?
A3: Thicker units can provide better insulation, but the frame must support the added thickness. Consult a professional to confirm compatibility.
For more information on how to make your home more energy efficient, have a look at the official Gov.uk page.