When choosing window glazing, the way the glass is secured within the frame is just as important as the glass itself. The glazing method directly affects thermal performance, weather resistance, durability, and security.
At Gowercroft Joinery, we use wet glazing because it provides superior weatherproofing, energy efficiency, and structural integrity compared to dry glazing. But what exactly are the differences, and which method is best?
What Are the Different Ways to Glaze a Window?
Glazing refers to how the glass is fixed into a window frame. A poor glazing method can lead to draughts, water leaks, and heat loss, making a home less comfortable and more expensive to heat.
The two most common glazing methods are:
- Dry glazing – Uses rubber gaskets or pre-formed seals to hold the glass in place.
- Wet glazing – Bonds the glass to the frame using high-performance sealants.
Each method has its advantages, but one offers better long-term reliability.
What Is Dry Glazing and When Is It Used?
Dry glazing relies on rubber gaskets or pre-formed seals to secure the glass. It is commonly used in uPVC and aluminium windows because it allows for quick installation and easy replacement.
Advantages of Dry Glazing
- Faster installation, as there is no waiting time for adhesives to cure.
- Easier glass replacement compared to wet glazing.
Disadvantages of Dry Glazing
- Lower weather resistance, as rubber seals shrink and crack over time, leading to air leaks and water ingress.
- Less durability, as the glass is not fully bonded to the frame, making it more susceptible to movement and failure.
- Reduced energy efficiency, as gaps between the frame and glass can allow heat to escape.
While dry glazing may be suitable for mass-produced, budget-friendly windows, it does not offer the long-term performance needed for high-quality timber windows.
What Is Wet Glazing and Why Is It the Best Method?
Wet glazing secures the glass using high-performance sealants, adhesives, or putties, forming a strong and permanent bond between the glass and the frame. This creates an airtight and watertight seal that prevents moisture and air leaks.
At Gowercroft Joinery, we exclusively use wet glazing in all timber windows because it provides:
- Superior weatherproofing – A continuous bond prevents water penetration.
- Better insulation – No air gaps mean lower heat loss and better energy efficiency.
- Increased durability – The glass and frame function as a single unit, reducing movement.
- Higher security – Fully bonded glass is much harder to remove or break.
How Does Window Glazing Affect Weatherproofing?
A well-glazed window must stand up to wind, rain, and air infiltration. Wet glazing helps ensure superior weather performance, and our test results prove it:
- Air permeability (EN 12207) – Class 4 (highest rating) across most of our products.
- Water tightness (EN 12208) – Our Wollaton Mock Sash achieves Class 9A, the highest level, meaning zero water penetration even under extreme rain conditions.
- Wind resistance (EN 12210) – Our windows are engineered to withstand extreme weather without deformation.
These results confirm that wet glazing is the best choice for long-lasting, high-performance timber windows.
How Does Window Glazing Impact Energy Efficiency?
The glazing method directly affects the insulation and thermal performance of a window.
Wet glazing seals these advanced units perfectly, eliminating gaps that could allow heat to escape.
And it’s one of may choices that make our whole window U-values as low as 0.77 W/m²K, far exceeding building regulation standards.
How Long Do Wet-Glazed Windows Last?
Gowercroft windows are designed to last 60+ years, thanks to our high-quality microporous coatings and expert glazing techniques. Unlike dry-glazed windows, which require frequent seal replacement, wet glazing remains intact for decades.
- 10-Year No Quibble, No Maintenance Guarantee – No fine print, no hidden exclusions.
- Timbacare Programme – Extend the warranty indefinitely with regular maintenance.
Which Window Glazing Method Is Right for You?
If you’re looking for long-lasting, energy-efficient, and weatherproof windows, wet glazing is the superior choice. While dry glazing may be quicker to install, it falls short on long-term performance.
| Feature | Dry Glazing | Wet Glazing |
|---|---|---|
| Weatherproofing | Prone to leaks over time | Fully sealed, prevents water ingress |
| Lifespan | Gaskets shrink and degrade | Long-lasting, bonded seal |
| Thermal Efficiency | More air leakage | Airtight for better insulation |
| Structural Strength | Relies on gaskets | Fully adhered for better security |
| Maintenance | Gaskets may need replacing | Minimal maintenance required |
At Gowercroft Joinery, every window we manufacture is wet glazed to ensure superior performance and longevity.
To see our glazing process in action, watch our expert team at work:
Why Gowercroft Uses Wet Glazing for Superior Performance
If you want windows that last a lifetime, choosing the right glazing method is essential. Wet glazing offers unmatched durability, energy efficiency, and weatherproofing, making it the clear choice for high-performance timber windows.
At Gowercroft Joinery, we stand behind our products with:
- Industry-leading weatherproofing results
- U-values as low as 0.77 W/m²K
- A 10-year no-quibble guarantee
- An optional lifetime warranty extension with Timbacare
Looking for exceptional window performance? Get in touch with us today!