Each window is made-to-order using FSC® or PEFC certified timber, ensuring both sustainability and durability.
Customisable designs including shaped and feature windows to meet specific project requirements.
Designed to capture historical details, making them suitable for both conservation areas and new builds.
Our products provide high-performance solutions in both thermal and acoustic insulation.
Experience the perfect blend of timeless design and modern performance with our timber box sash windows. Ideal for period properties and new builds alike, these bespoke windows offer unparalleled aesthetics and durability. Crafted using FSC® or PEFC certified timber, they bring a touch of classic charm while boasting contemporary features such as enhanced thermal insulation and acoustic performance.
Each unit is meticulously made-to-order, ensuring a perfect fit and finish that meets your specific requirements. Designed for sustainability and longevity, our timber box sash windows are an investment in both style and substance for your home or project.
Specifications
| Thermal | Standard Specification | Optional Upgrade | |
| U-Value | as low as 1.1 | as required | |
| g Value | 52% | as required | |
| LT | 72% | as required | |
| Acoustic | Acoustic | Acoustic+ | |
| Rw | 36dB | 38dB | 42dB |
| Weather Testing BS6375 part 1 | |||
| Air | Class 4 | ||
| Wind | Class C5 | ||
| Water | Class 7A | ||
| Operation & Strength BS6375 parts 2 & 3 | |||
| Classification | Pass | ||
| Security | |||
| PAS 24 (2016) | Part Q compliant | ||
| Sustainability | PEFC/ FSC | ||
| Chain of Custody | Yes |
Timber Options
Explore our variety of timber options, including Engineered Redwood, Engineered Hardwood, Engineered Oak, and Accoya, with special timber types available upon request to suit your project’s unique requirements.
Colour Options
Our timber products are available in a wide range of finishes, including single colour, dual colour, and natural stained options. View our most popular RAL colours below to find the perfect match for your project’s style.
Colour Selected:
Obscure Glass Options
We offer a range of glass options designed to boost thermal efficiency, acoustic insulation and security. You can also customise your products further with decorative or obscured glass options.
Ironmongery
Our extensive ironmongery range features a variety of handles, locks, and accessories in different finishes and styles to complement the aesthetic of your project while providing excellent security.
3 Styles
3 Styles
5 Styles
4 Styles
6 Styles
Downloads
Explore our Downloads section for detailed product information. If you have any specific questions, please get in touch.
To better assist you, we've compiled answers to some of the most commonly asked questions about our timber box sash windows. Please find the information you need below. If you have any other queries, feel free to contact us directly.
The lead time for our timber box sash windows is typically 6-8 weeks from the date of order confirmation. However, please note that the lead time could vary depending on the specific requirements of your project and our current workload. For the most accurate delivery estimate, please contact our team directly.
Yes, our timber box sash windows are specifically designed to meet the requirements of conservation areas and listed buildings.
Absolutely, Lomax + Wood offers custom designs to accommodate unique architectural details for any project.
We offer a variety of high-quality FSC® or PEFC certified timbers including Accoya, European Oak, and Redwood, each chosen for their durability and aesthetic qualities.
We offer a variety of glazing options including double glazing, laminated glass for enhanced security, and acoustic glass for better sound insulation. Each option can be tailored to meet specific thermal, acoustic, and aesthetic requirements.
Our case studies showcase the breadth of our expertise, from restoring historic properties to adding the finishing touches to luxury new builds. Explore our portfolio of case studies for inspiration.
Newbuild
Newbuild
Newbuild
Conservation
Conservation
Newbuild
Newbuild
Conservation
From initial consultation to final installation, we’re with you every step of the way.
We’ll discuss your needs, preferences, and budget to provide a tailored solution. Our experts will guide you through our product range, explaining the benefits of different materials and designs. We’ll then provide a detailed quote for your consideration.
Get a QuoteVisit one of our showrooms to see our full sized samples up close. Experience the quality of our craftsmanship, test the smooth operation of our windows and doors, and visualise how they’ll look in your home. Our team will be on hand to answer any questions.
Get a QuoteOnce you’ve paid your deposit, we’ll arrange a detailed site survey. Our experts will take precise measurements and assess specific requirements, ensuring a perfect fit and addressing any potential issues before manufacturing begins.
Get a QuoteBased on the survey, we’ll create detailed designs for your approval. This includes specifications for sizes, glazing options, hardware, and finishes. We’ll work with you to refine the designs until you’re completely satisfied.
Get a QuoteYour bespoke products will be crafted in our state-of-the-art facility. We use advanced techniques and high-quality materials to ensure exceptional performance and longevity. Once complete, we’ll carefully deliver your products to your property.
Get a QuoteDiscover custom-made spring sash windows from Lomax + Wood, offering superior performance with historical accuracy and modern benefits. Ideal for heritage and contemporary projects.
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Make a lasting impression with our bespoke timber entrance doors, combining security and style for a grand welcome.
Single glazed sash windows offer classic charm and heritage authenticity, while delivering improved ventilation and ease of maintenance.
Our flush casement windows offer a timeless look with superior functionality, ideal for both contemporary and classic homes.
Illuminate your space with our exquisite wooden roof lanterns, available in standard or bespoke designs.
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