Key Takeaways
- UPVC sash windows combine traditional aesthetics with modern functionality, featuring independently operating top and bottom sashes for flexible ventilation control.
- These windows achieve A-rated energy efficiency whilst maintaining authentic period features like deep bottom rails and mechanical butt-joints.
- Available in three main types: single-hung, double-hung, and spring-balanced, with widths ranging from 375mm to 1500mm and heights from 800mm to 2400mm.
- Features include mitred welded joints, easy-clean tilt function, double glazing, and customisable decorative options such as horns and glazing bars.
- Particularly suitable for conservation areas (subject to Article 4 permissions) due to their authentic appearance and traditional design elements.
Looking to combine classic window design with modern performance? UPVC sash windows offer the perfect blend of traditional aesthetics and contemporary functionality. These innovative windows maintain the timeless appeal of wooden box sash designs while delivering superior energy efficiency with an A-rating.
You’ll appreciate how these windows give you complete control over ventilation, with independently operating top and bottom sashes that can be securely positioned at any height. The balanced load mechanism ensures smooth operation, while the easy-clean tilt function lets you safely maintain your windows from inside your home. For properties in conservation areas, elite UPVC sash windows feature authentic details like deep bottom rails and mechanical butt-joints that closely mirror traditional wooden frames.
Overview of uPVC Sash Windows
UPVC sash windows combine traditional aesthetics with modern functionality. These windows feature two vertically sliding sashes that operate independently, creating flexible ventilation options. The balanced load mechanism holds each sash at any height, providing precise control over airflow.
The specifications for UPVC sash windows include:
| Feature | Specification |
|---|---|
| Minimum Width | 375mm |
| Maximum Width | 1500mm |
| Minimum Height | 800mm |
| Maximum Height | 2400mm |
| Energy Rating | A-rated |
| Bottom Rail Thickness | 105mm |
| Meeting Rail Thickness | 39mm |
Key features of UPVC sash windows include:
- Mitred welded joints for enhanced corner strength
- Chamfered beading for modern aesthetics
- Easy-clean tilt function for interior window cleaning
- Decorative options: horns, gold or chrome furniture, glazing bars
- Double glazing for improved thermal efficiency
- Mechanical butt-joining in elite models
- Deep bottom rail for authentic appearance
The design incorporates traditional elements found in timber sash windows:
- Astragal glazing bars
- Decorative sash horns
- Traditional-style operating hardware
- Engineered jambs
- Authentic meeting rail profiles
UPVC sash windows suit properties in conservation areas, subject to Article 4 permissions. The manufacturing process includes quality checks at each production stage, with customisation options to match specific architectural requirements.
Common Types of Sash Windows
UPVC sash windows come in three main designs, each offering distinct operational features for different needs.
Single-Hung Sash Windows
Single-hung sash windows feature two sashes with one movable section. The bottom sash slides vertically while the top sash remains fixed. This design reduces air infiltration through fewer moving parts creating a more energy-efficient window structure.
Double-Hung Sash Windows
Double-hung windows include two operational sashes moving independently. Both sashes slide up and down with a tilt-in function for interior cleaning access. This design creates flexible ventilation options by opening either the top or bottom section.
Spring-Balanced Sash Windows
Spring-balanced sash windows use modern mechanisms instead of traditional weights and pulleys. The spring system provides smooth operation with reduced maintenance requirements compared to traditional counterweight systems.
| Sash Window Type | Moving Parts | Ventilation Control | Maintenance Access |
|---|---|---|---|
| Single-Hung | 1 Sash | Limited | External Only |
| Double-Hung | 2 Sashes | Full Control | Internal Tilt |
| Spring-Balanced | 2 Sashes | Full Control | Internal Tilt |
Each type integrates with UPVC frames maintaining traditional aesthetics while delivering modern performance benefits. The frame material combines with these operational styles to create energy-efficient window solutions for various architectural requirements.
Installing and Maintaining Sash Windows
UPVC sash windows offer you the perfect blend of traditional aesthetics and modern performance. Your investment in these windows will reward you with enhanced energy efficiency lower maintenance requirements and improved home security.
By choosing UPVC sash windows you’re not just selecting a window – you’re opting for a long-term solution that’ll maintain its appearance and functionality for years to come. With proper care and professional installation these windows will continue to add value to your property while preserving its architectural charm.
For the best results always work with certified installers who understand the specific requirements of UPVC sash windows and can ensure they’re fitted correctly to maximise their performance.
Frequently Asked Questions
What are UPVC sash windows?
UPVC sash windows are modern window systems that replicate traditional wooden box sash designs. They feature two vertically sliding sashes within a frame, made from UPVC material. These windows combine classic aesthetics with modern energy efficiency, making them an excellent choice for both period and contemporary homes.
Are UPVC sash windows energy efficient?
Yes, UPVC sash windows are highly energy efficient with an A-rating. They feature double glazing and specially designed frames that provide excellent thermal insulation. This helps reduce heat loss and can significantly lower energy bills whilst maintaining comfortable indoor temperatures.
How do UPVC sash windows operate?
UPVC sash windows operate through a balanced load mechanism that allows smooth vertical sliding of the sashes. Both upper and lower sashes can move independently in double-hung versions, providing flexible ventilation control. The windows also feature a tilt function for easy cleaning from inside the property.
Can UPVC sash windows be installed in conservation areas?
UPVC sash windows can be installed in conservation areas, subject to Article 4 permissions. Elite models feature authentic details like astragal glazing bars and decorative sash horns that closely resemble traditional wooden frames. However, approval is assessed on a case-by-case basis.
What are the different types of UPVC sash windows?
There are three main types: Single-Hung (fixed upper sash), Double-Hung (both sashes move), and Spring-Balanced sash windows. Each type offers different benefits in terms of ventilation control, maintenance access, and operational mechanics whilst maintaining the traditional sash window appearance.
What are the size limitations for UPVC sash windows?
UPVC sash windows are available in various sizes to suit different architectural requirements. The exact minimum and maximum dimensions depend on the manufacturer’s specifications. Most suppliers offer customisation options to meet specific size requirements whilst maintaining structural integrity.
