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Product Features

Traditional Operation

Pre-stretched nylon cords, lead sash weights, and pulleys ensure English heritage requirements are met.

High-Quality Timber

Fabricated from FSC® or PEFC certified timber, providing both durability and sustainability.

Elegant Design

Designed with true glazing bars and externally glazed with putty for an elegant and authentic appearance.

Weather Sealed

All windows are externally glazed and weather-sealed to provide lasting protection against the elements.

Curved single glazed windows

Enhancing Heritage with Single Glazed Sash Windows

Our single glazed sash windows are meticulously crafted to replicate the elegance of traditional sash windows while adhering to modern building standards. Ideal for historical and conservation areas, these windows enhance the authentic charm of period properties.

Constructed with high-quality FSC® or PEFC certified timber, they offer durability and sustainability. Each unit is made-to-order, incorporating fine details such as true glazing bars and putty glazing. Customisable with various finishes and hardware options, these windows cater to specific project needs. Trust Lomax + Wood to provide single glazed sash windows that enhance your property’s aesthetic and value.

Maximising Performance with Vacuum Sealed Units

Our Single Glazed Sash Windows can be enhanced with innovative vacuum sealed units, designed to maximise energy efficiency and performance. These units are compatible with a variety of materials, ensuring seamless integration into your project. Vacuum glazing offers exceptional thermal insulation with low U-values, optimal light transmission, and superior noise reduction, meeting the stringent requirements of modern low-energy buildings. Additionally, options for acoustic insulation, safety, solar control, and hybrid solutions are available, providing comprehensive thermal and soundproofing qualities.

Fineo Glazing close up
Single glazed sash windows

Listed Buildings & Conservation Areas

A solution where the property is listed or other restrictions prevent the use of double-glazing. Putty glazed vertically sliding wooden sash windows with a single sheet of glass. Lomax + Wood offer a made-to-order service to match specific details where required.

Please note that these single glazed timber sash windows will not meet current building regulations. They are designed to meet English heritage and conservation officer requirements. The sections shown here are indicative and can be altered to suit depending on the size of the order.

Customisation Options

We offer a range of customisation options to meet your exact requirements. Our timber windows and doors are made-to-order so please contact us to discuss any option that you require.

  • Factory double glazed 4/14/6 tough/laminated lowe argon fill to meet Part L
  • Hardwood Sapele
  • Engineered Larch or Oak
  • RAL Colour of your choice
  • Stained or a dual finish
Black box sash windows
Kensington Palace

Peace & Quiet: Acoustic Upgrade

With today’s increase in sound pollution we can offer a standard solution or made-to-order depending on your requirements. Please contact us for further details and to discuss your acoustic timber window requirements.

  • Additional acoustic seals depending on product.
  • 1 PPVB Silence laminated glass for standard acoustic upgrade.
  • Made-to-order option available with testing and certification.
  • Tested to BS EN ISO 10140-2:2010
  • Specifications
  • Timber Options
  • Colour Options
  • Obscure Glass Options
  • Ironmongery
  • Downloads

Specifications

Technical Specifications

Putty Glaze OptionsStandardFineo 6Fineo 8Fineo 10
Thickness4mm6.7mm7.7mm9.7mm
U Value (glass only)5.80.70.70.7
g Value88%62%61%60%
LT91%80%79%79%
Acoustic Rw (glass only)30 (-2;-2)n/a35 (-2;-5)36 (-2;-3)
SustainabilityPEFC/ FSCPEFC/ FSCPEFC/ FSCPEFC/ FSC
FSC Chain of CustodyYesYesYesYes

Timber Options

Rich 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.

Redwood - Standard

Redwood - Standard

Meranti - Optional

Meranti - Optional

Sapele - Optional

Sapele - Optional

Oak - Optional

Oak - Optional

Accoya - Optional

Accoya - Optional

Colour Options

Explore Our Range of 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.

9010
9004
9003
7032
7030
7016
7004
7002
1013
6013
RAL swatch

Colour Selected:

Pure White (RAL 9010)
Signal Black (RAL 9004)
Signal White (RAL 9003)
Pebble Grey (RAL 7032)
Stone Grey (RAL 7030)
Anthracite Grey (RAL 7016)
Signal Grey (RAL 7004)
Olive Grey (RAL 7002)
Oyster White (RAL 1013)
Reed Green (RAL 6013)
Any RAL colour
9010
9004
9003
7032
7030
7016
7004
7002
1013
6013
RAL swatch

Obscure Glass Options

Customisable 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.

Satin - Standard

Satin - Standard

Vision - Optional

Vision - Optional

Kathedral - Optional

Kathedral - Optional

Arena-C - Optional

Arena-C - Optional

Ironmongery

Ironmongery and Hardware

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.

Downloads

Downloadable Resources

Explore our Downloads section for detailed product information. If you have any specific questions, please get in touch. 

What Our Customers Are Saying

Lomax supplied all the doors and windows for our refurbishment. The process was easy, the doors and windows are beautiful. Fantastic service, great product, superb aftercare with minor adjustments once...
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Miranda Anderson

I had all eleven windows replaced at my Edwardian house by Lomax + Wood, Silver service, in 2015. They were an easy company to deal with and the product and...
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Ian Harrington

Absolutely brilliant. We were really worried as we were having a new kitchen installed and we thought that it could get damaged during windows/bi-folding doors installation. But nothing further from...
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Lia T

From start to finish Lomax + Wood were incredibly professional in their approach. I have very little experience in construction but from the outset they filled me with ease and...
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Hannah Pewter

I wouldn't hesitate to recommend L&W. The quality of the doors and windows they installed in our house is excellent and the service I have received from Andrew and his...
Read more

Ben Lane

Frequently Asked Questions

To help you better understand our single glazed sash windows, we've compiled answers to some of the most commonly asked questions. From installation to maintenance, find all the essential information you need to make an informed decision.

What makes single glazed sash windows suitable for conservation projects?

Single glazed sash windows from Lomax + Wood are designed to meet the stringent requirements of heritage and conservation officers, making them ideal for restoration projects.

How are single glazed sash windows weatherproofed?

Our single glazed sash windows are externally glazed with putty and weather-sealed to ensure protection against the elements.

Can you customise the dimensions and finish of single glazed sash windows?

Yes, all our single glazed sash windows are made to order, allowing you to specify bespoke dimensions and finishes to suit your project.

Are single glazed sash windows energy efficient?

While single glazed sash windows are not as energy-efficient as double or triple-glazed options, they can still provide improved thermal performance when combined with high-quality draught seals and insulated frames.

What materials are used for single glazed sash windows?

We use premium, FSC® or PEFC certified timbers such as European Oak, Accoya, and Redwood. These materials are selected for their durability, sustainability, and aesthetic appeal, ensuring that the windows not only look beautiful but last for years to come.

Can't find the answer you're looking for?

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Case Studies

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.

Our Process

From initial consultation to final installation, we’re with you every step of the way.

Consultation and Quote

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.

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Talking people

Product Showcase

Visit 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.

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Redwood Barn

Order and Survey

Once 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.

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Lomax + Wood employee surveying home

Design Approval

Based 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.

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Lomax+Wood showroom employees

Manufacture and Delivery

Your 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.

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Lomax + Wood employee manufacturing window frames

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