Business Details
46 Years
experience
Trusted Double Glazing & Conservatories in Hampshire
Established in 1980, Topline Windows has been manufacturing and installing high-quality double-glazed windows, doors, and conservatories for over four decades. Our in-house production ensures strict quality control, while our team of experienced fitters guarantees precise installation tailored to individual needs. As proud members of the Glass and Glazing Federation (GGF), we adhere to rigorous industry standards, offering a full after-sales service to ensure long-term customer satisfaction. Our expertise spans across Hampshire, West Sussex, Portsmouth, and Chichester, where we deliver bespoke solutions for both residential and commercial properties. All products are backed by a 10-year guarantee, complemented by independent insurance coverage for complete peace of mind.We prioritise transparency, with clear pricing and no-pressure sales approaches, ensuring clients receive value-driven, durable solutions. Our commitment to innovation is evident in our lightweight tiled roofs, glass lantern conversions, and energy-efficient A-rated products, which combine functionality with aesthetic appeal. Customer testimonials highlight our professionalism, reliability, and dedication to transforming living spaces. With a showroom in Waterlooville and a free quotation service, we strive to make every project seamless from consultation to completion.
Services
Conservatories
Double Glazed Windows
UPVC Doors
Conservatory Roof Replacements
Home Extensions
Roof-line PVCu Products
Double Glazing Repairs
Glass Roofs
Tiled Roofs
Patio Doors
Details
- Year established: 1980
Highlights and features
- In-house manufacturing since 1980 ensures quality control.
- Experienced fitters deliver precise installations for bespoke solutions.
- 10-year guarantee with independent insurance coverage included.
- Proud members of the Glass and Glazing Federation (GGF).
- No-pressure sales approach with transparent pricing and free quotations.
Associations and certifications
- Glass and Glazing Federation (GGF)
What people say
Wonderful extra room
Quality and professionalism
Enjoy for many years
Incredibly impressed
Professional installations
Services
Conservatories
Our A-rated conservatories combine energy efficiency with modern design, offering bespoke solutions for residential properties. Constructed using high-quality materials, they enhance living spaces while providing thermal insulation. Ideal for homeowners seeking durable, aesthetically pleasing extensions.
Double Glazed Windows
Double-glazed windows feature advanced insulation to reduce heat loss and noise pollution. Customisable with various styles, including sliding sash and obscure glass options, they improve property security and energy efficiency while meeting UK building regulations.
UPVC Doors
UPVC and composite doors offer enhanced security with hook locking mechanisms, complying with insurance standards. Available in multiple designs, they provide thermal efficiency and low maintenance, ensuring long-term durability and aesthetic appeal.
Conservatory Roof Replacements
Replace outdated polycarbonate or flat roofs with lightweight tiled or glass lantern roofs. This upgrade improves insulation and aesthetics, transforming existing structures into functional, year-round spaces with minimal disruption during installation.
Home Extensions
Glass-roofed home extensions create bright, spacious living areas. Built with brick walls and plastered interiors, they include double-glazed windows and doors, offering seamless integration with existing homes while boosting property value.
Questions
What guarantees do you offer on your products?
All installations come with a 10-year guarantee and independent insurance coverage for parts and labour, ensuring long-term peace of mind.
Do you serve areas outside Hampshire?
Yes, we serve Portsmouth, Chichester, West Sussex, and select postcodes in East Hampshire for repairs and installations.
Can you replace a foggy double-glazed unit?
Yes, we replace misted or cracked units as part of our repair service, covering most postcodes around Portsmouth and East Hampshire.
Are your conservatories energy-efficient?
Yes, all conservatories meet A-rated energy standards using Climate Activ glass, ensuring thermal efficiency and compliance with building regulations.
What are your showroom hours?
Our showroom is open Monday-Friday 8:30 AM–4:30 PM, Saturday 9:30 AM–1:00 PM, with free consultations available.
Do you offer free quotations?
Yes, we provide free, no-obligation quotations for all services, with online pricing guides available for conservatories and roof replacements.
