15 Best Window Installers in Bristol for 2026

🪟 15 businesses · 📍 Bristol
✓ Verified Google reviews · ✓ Reviewed regularly · ✓ Updated 29 May 2026
Mark Reid
Written by Mark Reid, Trades Editor · Verified 29 May 2026
Bristol's housing stock is genuinely varied, and that makes window installation here more involved than in many other UK cities. You'll find Victorian terraces in Redland and Clifton with sash windows that need like-for-like replacement to satisfy conservation area rules, 1930s semis in Horfield and Filton that are prime candidates for uPVC casement upgrades, and newer builds across Emersons Green and Bradley Stoke where double or triple glazing is already standard but seals fail and units need replacing. Energy efficiency matters a lot in a city with as many period properties as Bristol, and getting the right U-value for your glazing can make a real difference to heating bills over time. Expect to pay roughly £400 to £700 per window for a standard uPVC casement replacement, with timber or aluminium frames, bay windows, or heritage-style sash units pushing costs considerably higher. Planning permission isn't usually required for straight replacements, but if your property sits in a conservation area, such as parts of Clifton, Redland, or Totterdown, you'll want to confirm the frame style and colour are acceptable before any work starts.

The businesses on this page are drawn from third-party public business listings and ranked by review rating and review count, with a small lift given to those that show a working website and phone number. Before any business appears here, we check its homepage to confirm that window installation is what it primarily offers, which is how unrelated trades get kept off the page. Permanently closed listings are removed automatically. Where you see a Trust Verified badge next to a business, that company has additionally passed our full verification process, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information. You can find the full list of what that involves on our How We Verify page. Businesses without that badge haven't been independently verified by us, and it's something you should look into yourself before booking.

Before you commit to any installer, ask for a written, itemised quote so you can compare like for like. Check that any new windows carry FENSA or CERTASS certification, because these schemes confirm the installation meets building regulations and your installer will notify the local authority on your behalf, which matters when you come to sell the house. If your property is listed or sits in a conservation area, ask specifically whether the installer has experience working with Bristol City Council's planning team. Get at least three quotes, because prices vary significantly between companies even for identical work. Ask about the glass specification too, particularly the Ug-value and whether units come with an argon gas fill, since these details affect thermal performance more than most people realise. Finally, confirm the warranty terms in writing, both for the frames and for the sealed glass units, before signing anything.
How We Select & Rate The Best Window Installers in Bristol

Rankings on this page are driven by public review rating and review count from third-party business listings, with a small lift applied to businesses that have a working website and phone number. We check each business's homepage to confirm that window installation is what they primarily offer, which keeps unrelated trades off the page. Permanently closed listings are removed automatically. Businesses marked Trust Verified have additionally passed our full verification, covering trade qualifications and accreditations, public liability insurance, trading history, customer review history, and registered company information. See our How We Verify page for the full list. All other businesses on this page have not been independently verified by us, and inclusion is not an endorsement. Always do your own checks before hiring.

Positions 1–5 (Recommended and Featured) may be paid placements. Every other listing is ranked on rating and review count from third-party business listings. How we rank & verify →

Quick Comparison — Window Installers in Bristol

# Business Rating Reviews Phone
1 Caddy Windows Recommended ⭐ 4.8 374 +44 117 966 9998 View →
2 Wessex Glass Co Ltd Featured ⭐ 4.9 256 +44 117 977 0033 View →
3 The Bristol Sash Window Company Featured ⭐ 4.9 122 +44 117 904 1758 View →
4 Sash Solutions (Bristol) Ltd Featured ⭐ 5.0 67 +44 117 322 6400 View →
5 New Life Sash Window Co Featured ⭐ 5.0 57 +44 7795 663740 View →
6 JOYSOL Sash Windows Specialists Bristol ⭐ 4.8 56 +44 7943 691117 View →
7 Vision Windows Bristol ⭐ 5.0 33 +44 7969 674370 View →
8 DM Window Installations Ltd ⭐ 4.9 39 +44 117 313 6884 View →
9 Avonmouth Windows Ltd ⭐ 5.0 23 +44 117 307 0190 View →
10 DH Frames Windows, Doors & Conservatories ⭐ 5.0 22 +44 117 963 6856 View →
11 SquareOne Renovations ⭐ 5.0 13 +44 7834 725324 View →
12 Accolade Sash Windows ⭐ 5.0 12 +44 7526 305425 View →
13 Thomas Windows ⭐ 5.0 6 +44 7803 183510 View →
14 Window City ⭐ 5.0 3 +44 117 299 0137 View →
15 Acute Design Windows, Doors & Builders ⭐ 5.0 3 View →

Our Top Picks

6
JOYSOL Sash Windows Specialists Bristol
Not Verified
4.8 (56 reviews)
Bristol +44 7943 691117

JOYSOL Sash Windows Specialists Bristol provides professional sash window installation and restoration services throughout Bristol from their Bishopston base. The company specialises in traditional and modern sash window solutions, serving residential and commercial properties across the city. With a strong reputation reflected in their 4.8/5 star rating from 56 verified customer reviews, they offer expert craftsmanship in window installation and repair services.

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7
Vision Windows Bristol
Not Verified
5.0 (33 reviews)
Bristol +44 7969 674370

Vision Windows Bristol specialises in professional window installation services throughout the Bristol area, operating from their base in BS13. The company has earned a perfect 5-star rating from 33 verified customer reviews, reflecting their commitment to quality workmanship and customer satisfaction.

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8
DM Window Installations Ltd
Not Verified
4.9 (39 reviews)

DM Window Installations Ltd provides professional window installation services across Bristol from their base in BS13. The company has earned a 4.9/5 star rating from 39 verified customer reviews, reflecting their reliable service and quality workmanship. They specialise in fitting new windows for residential and commercial properties throughout the Bristol area.

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9
Avonmouth Windows Ltd
Not Verified
5.0 (23 reviews)

Avonmouth Windows Ltd provides professional window installation services throughout Bristol from their base on Mancroft Avenue. The company has earned a perfect 5-star rating from 23 verified customer reviews, reflecting their commitment to quality workmanship and customer satisfaction. They serve the BS11 area and surrounding Bristol neighbourhoods with reliable window fitting solutions.

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10
DH Frames Windows, Doors & Conservatories
Not Verified
5.0 (22 reviews)

DH Frames Windows, Doors & Conservatories specialises in professional window and door installation services from their base in Bedminster, Bristol. The company serves the Bristol area with comprehensive glazing solutions including replacement windows, doors, and conservatory installations. With a perfect 5-star rating from 22 verified customer reviews, they have established a strong reputation for quality workmanship and customer service.

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11
SquareOne Renovations
Not Verified
5.0 (13 reviews)
Bristol +44 7834 725324

SquareOne Renovations provides professional window installation services throughout Bristol, earning a perfect 5-star rating from 13 verified customer reviews. The company specialises in fitting replacement windows for residential and commercial properties across the local area. Their experienced team handles all aspects of window installation, from initial consultation through to completion.

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12
Accolade Sash Windows
Not Verified
5.0 (12 reviews)
Bristol +44 7526 305425

Accolade Sash Windows specialises in sash window installation and restoration services throughout Bristol. Based in St Paul's, the company has earned a perfect 5-star rating from 12 verified customer reviews on Google. They focus on both traditional timber sash windows and modern replacements for residential properties across the BS postcode areas.

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13
Thomas Windows
Not Verified
5.0 (6 reviews)
Bristol +44 7803 183510

Thomas Windows provides window installation services throughout Bristol from their base in Brislington. The company has earned a 5-star rating from 6 verified customer reviews on Google. They serve the BS4 area and surrounding Bristol neighbourhoods with professional window fitting solutions.

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14
Window City
Not Verified
5.0 (3 reviews)

Window City provides professional window installation services throughout Bristol from their base on Bath Road. The company has earned a perfect 5-star rating from 3 verified Google reviews, reflecting their commitment to quality workmanship and customer satisfaction. Their experienced team serves residential and commercial properties across the Bristol area, offering expert fitting and replacement services for various window types.

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15
Acute Design Windows, Doors & Builders
Not Verified
5.0 (3 reviews)
Bristol

Acute Design Windows, Doors & Builders provides professional window installation services throughout Bristol from their Brislington base. The company specialises in fitting windows and doors for residential and commercial properties, maintaining a perfect 5-star rating from 3 verified customer reviews. Based on Hampstead Road in the BS4 area, they serve Bristol and surrounding neighbourhoods with quality installation work.

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Transparency notice: Recommended (#1) and Featured (positions 2-5) listings may be paid placements, so a business's fee affects whether and where it appears in those positions. All other listings are ranked by a combined score drawn from ratings and review counts published on third-party business listings, plus basic completeness signals such as a working website and phone. A Trust Verified badge means we have independently checked that business's documents; businesses without it have not been independently verified by us. How we verify →

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Frequently Asked Questions

How much does a window installer cost in Bristol?
UPVC double glazing typically costs £300-600 per window for standard sizes, while timber sash windows range from £800-1,500 each. Full house installations often run £4,000-12,000 depending on property size and glazing type. Factors affecting price include window materials, glazing specification, structural work needed, and disposal of old frames. Conservation area requirements and listed building consent can add 20-30% to costs. Getting two or three detailed quotes helps identify fair market rates.
Do I need building regulations approval for window replacement in Bristol?
Replacement windows must comply with building regulations, typically handled through FENSA or CERTASS registration rather than council applications. However, conservation areas like Clifton, Redland, and parts of Bedminster require planning permission for front-facing changes. Listed buildings need both conservation officer approval and building regulations compliance. Your installer should clarify which approvals apply to your property and handle the paperwork as part of their service.
What's the difference between UPVC, aluminium, and timber windows?
UPVC offers low maintenance and good insulation at competitive prices, typically lasting 15-20 years. Aluminium provides slim profiles and excellent durability, particularly suited to modern properties, but costs more. Timber windows suit period properties and offer superior thermal performance when properly maintained, though they need regular painting or staining. Double-glazed units in all materials achieve similar energy efficiency ratings, so choice often depends on property style and maintenance preferences.
How long does window installation take?
Standard window replacements take 2-4 hours per window, so a typical three-bedroom house requires 1-2 days. Sash window restoration can take a full day per window due to careful dismantling and reassembly. Weather delays are common in Bristol's changeable climate, particularly for upper-floor work. Ground-floor installations continue in light rain, but scaffolding work stops in high winds. Factor in potential delays and avoid booking installations immediately before important events.
Should I replace all windows at once or do them in stages?
Whole-house replacement often secures better unit prices and ensures consistent appearance, particularly important in terraced streets. However, staged replacement lets you spread costs and test installer quality on a smaller scale first. Prioritise north-facing windows and those in poor condition for immediate replacement. Many Bristol installers offer payment plans for larger projects, making whole-house installation more manageable financially while maintaining design consistency across your property.
How can I verify a window installer's credentials and reputation?
Check FENSA or CERTASS registration through their official websites, not just certificates shown by installers. Look up company registration details at Companies House to verify trading history and financial status. Read Google reviews spanning several months, focusing on installation quality and aftercare service. Ask for local references and drive past recent installations if possible. Verify insurance coverage includes public liability and employer liability, and confirm they handle building control notifications as part of their service.