Glazing Replacement Guide
Here at Preston Glass and Glazing we’re knowledgeable about all types of current UK Glass and Glazing replacement. We’ve put together this handy guide – if you need further assistance just call 01772 822 442 or 07789 690237 or email Preston Glass for Glazing Replacement near me.
Organizing a glazing (window glass) replacement project efficiently involves clear planning, finding the right professionals, and minimizing disruption. Here’s a step-by-step guide to ensure it goes smoothly:
1. Assess the Need
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Identify the type of glazing: Single, double, or triple-glazed?
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Check for damage or inefficiency: Cracks, condensation between panes, or poor insulation?
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Determine scope: One window or a full property upgrade?
2. Research & Budget
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Get multiple quotes: Aim for 2–4 professional quotes for comparison.
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Compare materials and warranties: uPVC, aluminum, timber frames, Low-E coatings, etc.
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Check energy efficiency ratings: Look for windows rated A or better (UK) or ENERGY STAR certified (US).
3. Choose a Reputable Glazier
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Credentials & Insurance: Choose licensed, insured contractors.
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Reviews & References: Use Google Reviews, Checkatrade, Trustpilot- Preston Glass and Glazing have some great reviews so feel free to check us out
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Written contract: Ensure clear terms, timeline, and warranty.
4. Schedule the Work
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Timing: Choose a time with good weather (spring/summer ideal).
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Notify occupants/neighbors: Especially for large or noisy jobs.
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Plan for access: Clear space around windows inside and outside.
5. Prepare the Site
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Protect interiors: Use dust sheets, move furniture, remove curtains/blinds.
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Secure pets/kids: Keep them away from the work zone.
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Temporary heating: If replacing in winter, consider heaters.
6. During Installation
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Supervise or check in regularly: Make sure work is proceeding correctly.
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Ask questions if unsure: A good glazier will explain what they’re doing.
7. Post-Installation
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Inspect work: Check seals, alignment, opening mechanisms.
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Clean and ventilate: Remove dust and any fumes from sealants.
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Get paperwork: Warranty, energy ratings, and compliance certificates (e.g., FENSA in the UK).
Optional: Claim Incentives
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Some areas offer rebates or tax credits for energy-efficient glazing. Check local government or utility programs.
As you can see there’s a lot to think about – you also need to assess the material that you require. Here’s a clear comparison of window types based on materials, glazing, and operation styles. This should help you choose the best option for your needs.
1. Frame Materials
uPVC (unplasticised polyvinyl chloride) is the most common window frame material in the UK. It’s affordable, low-maintenance, and provides good thermal insulation. However, it’s not as durable or attractive as other materials and comes in a limited range of colours and finishes. Lifespan is typically 20 to 30 years.
Aluminium frames are increasingly popular in modern homes. They offer slim sightlines, high strength, and a sleek aesthetic. While aluminium conducts heat easily, modern versions include a thermal break to meet UK energy regulations. They are more expensive than uPVC but require minimal maintenance and last 30 to 45 years.
Timber frames are traditional and provide excellent insulation. They are ideal for period or listed properties and are often required in conservation areas. While timber windows look beautiful and are environmentally friendly, they need regular painting or staining and are more expensive. With good care, they can last 40 to 60 years or more.
Composite windows combine materials, typically timber inside for insulation and aesthetics, and aluminium or uPVC outside for weather resistance. These are high-performance windows that offer durability, low maintenance, and strong thermal efficiency. They are more expensive but typically last 40 to 50 years.
Steel windows are less common and mostly used in high-end or architectural properties. They offer extremely slim sightlines and industrial charm but are the most expensive option and require thermal breaks to be energy compliant in the UK.
2. Glazing Options
Single glazing is rarely used in the UK today except in listed buildings where double glazing is not permitted. It offers poor insulation (U-values of 5.0 to 6.0) and leads to high heat loss and condensation.
Double glazing is standard in modern UK homes and involves two panes of glass with a gap (filled with air or argon gas) for insulation. It typically achieves U-values of 1.2 to 2.8, depending on the glass and spacer technology used. It significantly reduces heat loss and outside noise.
Triple glazing uses three panes of glass and offers better insulation, with U-values as low as 0.6. It is ideal for very cold parts of the UK (like Scotland or exposed rural areas), or for those prioritising energy efficiency. However, it is heavier and more expensive than double glazing and offers diminishing returns in milder climates.
Low-E (low emissivity) coatings are standard in most new UK glazing and improve thermal performance by reflecting heat back into the room. This is especially important in compliance with UK Building Regulations.
Toughened or laminated safety glass is required in low-level glazing, doors, or anywhere where there is a risk of impact. Laminated glass also improves security and sound insulation and is common in urban homes or near busy roads.
3. Window Opening Styles
Casement windows are the most popular type in the UK. They’re hinged at the side and open outwards, offering excellent ventilation and sealing tightly when closed. They’re also among the most energy-efficient styles.
Sash windows, especially vertical sliding sash windows, are traditional and found in Georgian, Victorian, and Edwardian homes. Modern versions use spring balances instead of weights and can be double-glazed. They offer a classic look but may not be as airtight as casements.
Tilt and turn windows are a European-style design gaining popularity in the UK. They can open inwards like a door or tilt in at the top for ventilation. They are easy to clean from inside and are ideal for upper-storey windows.
Fixed or picture windows do not open and are used to bring in light and provide views. Because they have no moving parts, they are very energy-efficient and often used alongside opening windows.
Bay and bow windows extend outward from the property and increase interior space and natural light. They are typically made up of multiple casement or sash windows and are a popular feature in 1930s UK homes.
Sliding windows, often horizontal, are used in more modern or commercial buildings. They offer less ventilation than casement windows and are less common in traditional UK housing.
Final Notes for UK Homes
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FENSA or Certass certification is required for most window replacements in England and Wales to show compliance with Building Regulations.
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Energy ratings for windows range from A++ (most efficient) to E. For replacement windows, UK regulations typically require at least a B rating.
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Planning permission is not usually required unless the building is listed or in a conservation area, in which case you’ll need special consent and may be restricted to timber or specific glazing types.
If you require further information then don’t hesitate to contact us