Premium Home Extensions Across Portsmouth & the South Coast
Whether you want to expand your kitchen, create a bright home office, or seamlessly connect your interior to the garden, a conservatory or orangery from Glasstec is an ideal investment.
With dedicated local showrooms in Denmead and Clanfield, we design, manufacture, and install high-performance, energy-efficient glass structures across Portsmouth, Hampshire, and West Sussex. As a full-service, turn-key building specialist, we handle every detail—from initial planning and groundwork to brickwork, plastering, and electrics.
The Glasstec Advantage
End-to-End Building Service: In-house groundworks, masonry, plastering, and fitting—no relying on unvetted third-party contractors.
Energy-Efficient Technology: Low-E A-rated glazing and thermally broken frames to lower heating bills.
Local Showrooms: Visit our facilities in Denmead and Clanfield to test frames, door systems, and hardware in person.
Fully Accredited: FENSA registered, Checkatrade vetted, and HomePro insurance-backed guarantees.
Start Your Project Today
Let’s bring your vision to life. Get in touch with our team for a free, no-obligation consultation and quotation.
Get in touch today for expert advice, a free home survey, or a transparent, no-obligation quote.
Clanfield Showroom:
023 9259 1001Denmead Showroom:
023 9225 1122
Our Branches
Denmead
The Old Post Office House, Denmead, Hampshire, PO7 6NN
Tel: 023 9225 1122
Clanfield
14 White Dirt Lane, Clanfield, Hampshire, PO8 0QL
Tel: 023 9259 1001