Yorkshire Sash Windows sensitive to the architecture and period of your building
Our timber Yorkshire sash windows, often known as horizontal sash windows, combine a sliding mechanism with draught-proofing technology, featuring our patented seal system for higher performance levels. These windows are available in several configurations, right sliding, left sliding, and fixed, designed to complement the character of period properties.
We also provide narrow sash rails to meet specific requirements for historic properties subject to conservation and listed building regulations.
Our curated range of traditional sash furniture enhances the aesthetic while ensuring increased levels of security. For added protection, toughened glass can be specified to comply with Part Q building regulations.
Architects and Specifiers find us on SpecifiedBy
Discover the benefits
Weather rating
Tested to exposure category 2000 – the highest classification
Acoustic performance
Great performance as standard and extensive test data to guide specification for optional enhanced acoustic performance
Sustainability
Environmentally friendly designs, materials and processes
Choice of profiles
Whether you want thick or thin we can implement what you want
Smooth operation
Featuring an innovative track system with concealed rollers, the window opens and closes smoothly with minimal effort
Historic option
Available as a historic option, ideal for listed and conservation properties
Draught proofing (Wind load)
Dual seal design and unique patented sash seal both provide excellent draught proofing
Customise and make your new windows unique
Our ranges and options make it possible for you to achieve the exact look and feel to meet your property style and desired outcome.
Case Studies
See the projects where this product has been installed.
CASE STUDY
80 Grosvenor St – a fusion of modernism and traditional design
CASE STUDY
A cracker of a project – self-build in Lincolnshire
CASE STUDY
Racecourse Farmhouse project reaches final furlong
CASE STUDY
“Esto Perpetua” – Perfect wooden windows for a “Forever home”
Technical specifications
Performance and technical specifications are both available for our Yorkshire Sash Windows.
Performance
| Thermal | As Standard | Best |
|---|---|---|
| U-Value | 1.4 | 0.9 |
| Energy Rating | B | A+ |
| g-Value | 71% | As Required |
| LT | 81% | As Required |
| Acoustic | ||
|---|---|---|
| Rw | 30dB | 42dB |
| Weather | ||
|---|---|---|
| Classification | 2000 (BS6375 Part 1) | |
| Air | Class 4 (EN 12207:2000) | |
| Wind | Class 7A (EN 12208:2000) | |
| Water | Class C5 (EN 12210:2000 Class C5) | |
| Operation & Strength | ||
|---|---|---|
| Classification | Pass (BS6375 Part 2) | |
| Sustainability | ||
|---|---|---|
| FSC Chain of Custody | Yes | |
CAD Drawings
| Design | Download Options | |||
|---|---|---|---|---|
| H1 - Horizontal Sash Window | ||||
NBS Data
| Design | Download Options | ||
|---|---|---|---|
| H1 - Horizontal Sash Window | |||
Performance
| Thermal | As Standard | Best |
|---|---|---|
| U-Value | 1.6 | 1.2 |
| Energy Rating | B | A |
| g-Value | 71% | As Required |
| LT | 81% | As Required |
| Acoustic | ||
|---|---|---|
| Rw | 30dB | 42dB |
| Weather | ||
|---|---|---|
| Classification | 2000 (BS6375 Part 1) | |
| Air | Class 4 (EN 12207:2000) | |
| Wind | Class 7A (EN 12208:2000) | |
| Water | Class C2 (EN 12210:2000 Class C2) | |
| Operation & Strength | ||
|---|---|---|
| Classification | Pass (BS6375 Part 2) | |
| Security | ||
|---|---|---|
| PAS 24 / Part Q | Pass (as option) | |
| Sustainability | ||
|---|---|---|
| FSC Chain of Custody | Yes | |
CAD Drawings
| Design | Download Options | ||
|---|---|---|---|
| H1 - Horizontal (Yorkshire) Sliding Sash window | |||
| 102 x 44mm | |||
| 132 x 59mm | |||
NBS Data
| Design | Download Options | ||
|---|---|---|---|
| E1 - Tilt & Turn Window | |||
Looking for other styles? Browse our range
Find out more about the range of timber windows and doors we manufacture.
Sliding Sash Windows: Frequently Asked Questions
What are Yorkshire sash windows?
Yorkshire sash windows, also known as horizontal sliding sash windows, are a traditional style of window that features sashes sliding horizontally rather than vertically. This design is particularly popular in rural and historic properties, especially in northern England. Known for their simple functionality, Yorkshire sash windows offer a practical solution for properties where vertical sliding sashes may not be as suitable.
Why are horizontal sash windows called “Yorkshire” sash windows?
The term “Yorkshire sash windows” originates from their historical association with the county of Yorkshire in England, where this style was widely used. The horizontal sliding mechanism was ideal for the region’s architectural needs, particularly in cottages and farmhouses, where space constraints or structural factors made horizontal movement more practical. The name has since become synonymous with this distinct style of sash window.
Do Yorkshire Sash windows come with double glazing?
Yes, we offer double glazing as a standard for improved efficiency and noise reduction. We also provide the option of slimline double glazing to maintain the traditional appearance of your sash windows.
What warranties do you offer on Yorkshire sash windows?
We provide a detailed warranty on our timber sash windows, covering the materials and craftsmanship for your peace of mind. Specific warranty details are available upon your request.
Can I customise the design of my sash windows?
Yes, of course! We offer a range of customisation options, including frame profiles, glazing, hardware, and finishes, so you can create sash windows that match your home’s style and appearance.
