uPVC Casement Windows
High-Efficiency and Versatile Design
uPVC Casement Windows
Southeast Windows Ltd offers top-quality uPVC Casement Windows with BFRC-approved energy ratings of B, A, A+, and A++. These windows, available with triple glazing options, meet the latest energy efficiency standards. As of June 15, 2022, all windows and doors must have a minimum U-Value of 1.4W/m²K, requiring a warm edge spacer bar and Argon gas for a minimum B energy rating.
No Sales Pressure
At Southeast Windows Ltd, we follow a non-commission-based sales approach. You won’t feel pressured into making quick decisions. Take your time, do your research, and share your project requirements with us. We prioritise addressing your needs and answering your questions.
The EnergyPlus System
The Liniar EnergyPlus window system features six multi-chambers designed to trap warm air, achieving U-Values as low as 0.8, which is ideal for Passivhaus homes using triple-glazed units. Liniar’s patented double-action bubble gasket ensures a continuous seal around the windows, even in corners, preventing drafts and ensuring zero air leakage. With various frame colours, finishes, hardware, and glazing options, this window system is perfect for any home. It also offers complete versatility in window designs and security options, making it ideal for new build projects with Document Q approval.
A+ Energy-Rated Windows
Our standard EnergyPlus A+ energy-rated uPVC window offers slim sightlines that allow maximum light into your home. Available in top or side-hung, arched top, or French casement window styles, these windows also feature easy-clean hinges, making maintenance a breeze.
Quick Turnaround
We understand the importance of timely project completion. We can install your made-to-measure Casement Windows within two weeks from the order date, ensuring a quick turnaround, subject to a site survey and your requirements.
Draught-Free Performance
Our Liniar uPVC casement windows are engineered to keep your home draught-free, thanks to the unique, patented double-action bubble gasket that ensures a tight seal. The six-chamber EnergyPlus system delivers energy ratings of A+13 Solar Gain. You can upgrade to triple glazing for even higher efficiency, achieving A+23 Solar Gain with a proven BFRC license. Our double-glazed units also feature a soft-coat Low-E coating, argon gas between the panes, and a warm edge spacer bar to maximise energy efficiency.
Frame Profiles
Our uPVC casement windows come in sculptured (Ovolo) or chamfered (bevelled) 70mm profile frames. You can mix and match styles at no extra cost, ensuring a personalised touch.
Ovolo Profile: Offers a traditional finish with rounded edges, ideal for both period and modern properties.
Chamfered Profile: Provides sleek, clean lines perfect for contemporary homes with a modern aesthetic.
Enhanced Security
Our windows feature Secure by Design locking systems like the Kendrick Excalibur, tested for 100,000 cycles and backed by a 10-year mechanical guarantee. Upgrade to triple glazing with an A++ energy rating or add soundproofing glass units with Pilkington 6.8 Optiphon. We also offer PAS 24: 2022 standards for ground-floor dwellings and vulnerable areas.
Durability and Style
All our Liniar uPVC casement windows are internally beaded and fully welded for added security. You can choose from various leaded glass designs, including square lead, diamond lead, and Queen Anne styles, or customize with stained glass overlays, astragal bars, or Georgian bars for added character.
Thermally Efficient Windows
Liniar’s EnergyPlus profile prevents cold air from entering your home, maintaining warmth and ensuring superior insulation. The six-chambered design exceeds existing energy performance standards, providing exceptional energy efficiency.
Our ISO-BLOCO HYBRATEC advanced insulation foam tape ensures complete airtightness, eliminating heat loss and enhancing your home’s energy efficiency.
FENSA Certification
Southeast Windows Ltd is authorised to self-certify window installations as a participant in the Fenestration Self-Assessment Scheme (FENSA). Our surveyors and installers undergo rigorous vetting, allowing us to ensure compliance with all Building Regulations.
Comprehensive Survey Process
Our thorough survey process guarantees your installations meet all necessary regulations. We carefully consider factors such as glass selection, fire escapes, and trickle vents for ventilation, in-house risk assessments and method statements, ensuring a worry-free experience.
Want to know More?
Call us today for your FREE, no-obligation quotation or fill out our Contact Form! For the most modern, energy-efficient replacement Windows, Doors and Conservatory with a 10-year Insurance Backed Guarantee for complete home Comfort & Designed to Keep You Warm, Safe, & Secure.
Alternatively, call your local number below to arrange an appointment.
East London Double Glazing: 020 8472 4088 (head office)
South London Double Glazing: 0203 856 6667
North London Double Glazing: 0203 856 6669
Chelmsford Double Glazing: 01245 208 058
Romford Double Glazing: 01708 202 457
Great Dunmow Double Glazing: 01371 704 771
Southeast Windows Ltd – Your trusted partner for innovative, energy-efficient, and stylish window solutions.
