uPVC Casement Windows
High-Efficiency and Versatile Design
uPVC Casement Windows.
Southeast Windows Ltd offers uPVC Casement Windows with BFRC-approved energy efficiency and energy-rated windows that achieve B, A, A+, and A++ ratings, including triple glazing options. With new regulations since 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 for compliance.
No Salesman.
Our sales approach is non-commission-based, so you won’t be pressured into making hasty decisions. We ask that you take your time, do your due diligence, and list your requirements and concerns regarding your new project. We will answer as many questions as possible to help clarify any issues.
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 suitable for Passivhaus homes using triple-glazed units. Liniar’s patented double-action bubble gasket ensures a continuous seal around the windows, even in the corners, preventing draughts and ensuring zero air leakage. With a wide choice of frame colours, finishes, hardware, and glazing options, this window system is a perfect match for any home. We offer complete versatility in window designs and security options, ideal for new build projects with Document Q approval.
A+ Energy-Rated Windows
Our standard EnergyPlus A+ energy-rated uPVC window offers slim sightlines, allowing maximum light to enter your home. It is available in various configurations and styles, including top or side-hung, arched top, or French casement windows for fire escapes with easy-clean hinges that allow the window sash to be moved to clean the glass.
Quick Turnaround.
We can install your made-to-measure Casement Windows within two weeks from the order date, ensuring a quick turnaround for projects requiring rapid completion, subject to a site survey and your requirements.
Goodbye Draughts.
Our Liniar uPVC casement windows feature a unique, patented double-action bubble gasket, ensuring draught-free performance. The six-chamber EnergyPlus system achieves energy ratings of A+13 Solar Gain. Our double-glazed units include a soft-coat Low-E coating, argon gas between the glass panes, and a warm edge spacer bar. Upgrade to triple glazing with a proven BFRC license for even higher efficiency, achieving A+23 Solar Gain.
Frame Profiles.
Our uPVC casement windows are in sculptured (Ovolo) or chamfered (bevelled) 70mm profile frames. You can choose or mix and match styles at no extra cost, ensuring a personalised touch.
The sculptured Ovolo option provides a traditional finish with rounded edges and sculptured framing, making it a popular choice for both period and modern properties.
The chamfered option offers sleek and balanced lines, making it ideal for contemporary homes. Its clean, symmetrical, and tidy look is well-suited for modern aesthetics with versatile finishes.
Enhanced Security
A+ Energy-rated windows with options to upgrade to triple glazing with an A++ energy rating or soundproofing glass units with Pilkington 6.8 Optiphon. Our windows feature Secure-by-design locking systems like the Kendrick Excaliber, tested for 100,000 cycles with a 10-year mechanical guarantee. Our unwavering commitment to delivering superior quality at a competitive price. Secure-by-Design is a police initiative for all ground-floor dwellings in new buildings and vulnerable areas. We can upgrade all our Windows to PAS 24: 2022 standards.
Durable and Stylish
All our Liniar uPVC casement windows are internally beaded and fully welded, providing top security and strengthening corners and joints between mullions and transoms. Additionally, we can manufacture windows with other options like leaded glass designs, including square lead, diamond lead, and Queen Anne, or custom designs with various lead cane thicknesses and options for traditional flat or oval lead types. For added character, consider S.G.O. stained glass overlay, astragal bars, or Georgian bars to replicate small window glass panes.
Thermally Efficient Windows
Liniar’s EnergyPlus profile offers an innovative solution to prevent cold air from the external environment from infiltrating the interior of your home. The cutting-edge design features six multi-walled chambers that act as a barrier, ensuring your home’s warmth is maintained without being affected by outdoor cold air. This specially engineered six-chambered EnergyPlus system goes above and beyond existing energy performance standards, providing superior insulation and energy efficiency for your home.
Our top-quality uPVC windows are expertly crafted to provide your home with exceptional warmth, security, and safety. Our Multi-Functional Insulation Tape, specifically designed for all brick-to-brick openings, takes our windows’ performance to the next level. The ISO-BLOCO HYBRATEC technology guarantees complete airtightness, eliminating heat loss through convection.
Fensa.
Southeast Windows Ltd is authorised to self-certify our window installations as a recognised participant in the Fenestration Self-Assessment Scheme (FENSA).
Southeast Windows Ltd is part of the government’s Competent Person self-certification scheme. Our surveyors and installers have undergone rigorous vetting and inspections, which allows us to self-certify our work.
Survey.
Our comprehensive survey process, conducted in the comfort of your home, guarantees that your installations meet all necessary Building Regulations requirements. We meticulously consider factors such as the correct glass selection, fire escapes in bedrooms, trickle vents for background ventilation, and the overall safety and structure of your building, ensuring a worry-free experience. Our uPVC casement windows all have a BFRC certificate as proof of Energy compliance.
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 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.
London East: 020 8472 4088 (head office)
London South: 0203 856 6667
London North: 0203 856 6669
Chelmsford: 01245 208 058
Romford: 01708 202 457
Great Dunmow: 01371 704 771
Southeast Windows Ltd – Your trusted partner for innovative, energy-efficient, and stylish window solutions.