Hennessy Ltd offers expert window and door installation in London. Explore PVC, aluminium, sliding sash, bi-fold doors, and more with energy-efficient options.
Windows & Doors
Since 1998, Hennessy Ltd, a family-run business, has been providing professional window and door installation services across London. Our comprehensive range of solutions enhances the aesthetic appeal, security, and energy efficiency of your home or commercial property. From modern bi-fold doors to classic sliding sash windows, our expert team delivers tailored installations backed by quality assurance and robust warranties.
Our Window and Door Installation and Repair Services
We offer a wide variety of window and door solutions to suit every style and function:
Windows: Choose from PVC, aluminium, or traditional sliding sash windows, designed to complement your property’s architecture while maximising natural light.
Entrance Doors: Select from durable PVC, composite, or aluminium doors, offering security and style for residential and commercial properties.
Bi-Fold and Sliding Doors: Create seamless indoor-outdoor spaces with sleek bi-fold or sliding doors, perfect for modern homes and offices.
Glass and Glazing: We provide high-quality glass solutions for windows, doors, and bespoke applications, ensuring clarity and durability.
Conservatories: From full builds to roof replacements, our conservatories add space and elegance to your home.
Lanterns and Rooflights: Brighten interiors with stylish lanterns and rooflights, designed for both aesthetic appeal and functionality.
Materials, Styles, and Energy Efficiency
At Hennessy Ltd, we offer a range of options to meet your design and performance needs:
Materials
Choose PVC for cost-effective durability, aluminium for a sleek, modern look, or composite for enhanced strength and insulation. Our sliding sash windows combine traditional charm with modern performance.
Styles
From contemporary minimalist designs to classic heritage aesthetics, we tailor our windows and doors to match your property’s character.
Energy Efficiency
Our installations feature advanced glazing and insulation technologies, such as double or triple glazing, to reduce heat loss, lower energy bills, and improve thermal comfort. We prioritise eco-friendly materials to support sustainable living.
Quality Assurance
Every installation is carried out by our skilled team to meet industry standards, ensuring durability, security, and flawless operation.
Aftercare Support
We provide ongoing maintenance advice and support to keep your windows and doors in top condition.