Made in the UK
40 Year Heritage
Unique Patented Products
Extensive Warranties
Improve Your Home's Charm with Our Bespoke Double Hung Sash Windows
Experience the perfect blend of traditional craftsmanship and cutting-edge technology with our made-to-measure double hung timber sash windows. At Ventrolla, we've been perfecting the art of sash window manufacture for over 35 years, bringing period properties into the 21st century without compromising their character.
- Superior thermal and acoustic insulation
- Authentic period aesthetics
- Easy maintenance and operation
- Enhanced security features
- Bespoke designs to match your property
- Sustainable and long-lasting materials
Double Hung Sash Window Features
What makes our double hung timber sash windows unique?
Patented perimeter sealing system
Bespoke Georgian, Victorian & Edwardian designs
Premium timbers, glazing & hardware
Custom fit to your property with care
Local expertise, national coverage
1. Authentic Period Design
Our double hung timber sash windows are crafted to replicate original period features, ensuring your property maintains its historical integrity while benefiting from modern performance. We pay meticulous attention to details such as moulding profiles, glazing bar patterns, and hardware styles to create windows that are indistinguishable from original features.
2. Energy Efficiency
With advanced weatherstripping and high-quality glazing options, our windows significantly reduce heat loss, helping you save on energy bills and increase your home’s comfort. Our double glazed units can achieve U-values as low as 1.4 W/m²K, exceeding current building regulations.
3. Noise Reduction
The combination of thick timber frames and specialised glazing provides excellent sound insulation, creating a peaceful indoor environment even in busy urban areas. Our windows can reduce external noise by up to 40 decibels, depending on the glazing option chosen.
4. Easy Operation
Our windows feature smooth-sliding sashes and modern balance systems, ensuring effortless operation for years to come. The traditional cord and weight system has been refined to provide perfect balance, while our spiral balance option offers a modern alternative for easier maintenance.
5. Enhanced Security
With robust locking mechanisms and toughened glass options, our double hung sash windows offer superior security for your peace of mind. We use multi-point locking systems and can incorporate laminated glass for additional security, meeting PAS 24 standards for enhanced security performance.
6. Low Maintenance
Our factory-applied finishes and high-quality materials ensure your windows remain beautiful with minimal upkeep. The timber is treated with preservatives and finished with microporous paints or stains, allowing the wood to breathe while protecting it from the elements.
7. Sustainable Choice
By choosing timber windows, you’re making an environmentally friendly decision. Our wood is sourced from sustainably managed forests, and timber windows have a lower carbon footprint compared to uPVC alternatives. Moreover, they’re fully recyclable at the end of their long life.
Pricing
Our double hung timber sash windows are bespoke products, with pricing dependent on size, timber choice, glazing option, and finish.
Most Popular Configurations
- Classic Georgian: European Redwood, slim double glazing, white paint finish, brass fittings
- Heritage Conservation: Accoya®, single glazing, custom colour match to existing windows, traditional weights and pulleys
- Modern Performance: European Redwood, triple glazing, anthracite grey finish, chrome fittings, tilt-in sashes for easy cleaning
- Urban Noise Reduction: Sapele, acoustic double glazing, dark green exterior/white interior, sash locks and limiters
Don’t want to buy new?: Double Hung Sash Window Restoration
Keep the charm and improve the performance of your timber double hung sash windows with Ventrolla’s industry-leading renovation services. Why replace when you can restore?
- 40-Year Heritage
- Nationwide Coverage
- Expert Craftsmanship & Patented Products
- Energy-efficient solutions
- Extensive Warranties for Peace of Mind
Our skilled team specialises in restoring timber sash bay windows to full functionality while preserving their historical appeal. Using our advanced Ventrolla Perimeter Sealing System and energy-efficient glazing, we help you enjoy comfort and style for years to come.
Our Process
Consultation
The Ventrolla journey begins with a discussion with a member of our team and/or a detailed home or site design survey, to explore your ideas & devise a bespoke plan of action.
Estimate
Once our team have finalised the plans, we will provide a comprehensive estimate for your works. Enquiry to estimate typically takes between 5 and 10 working days.
Design
Ventrolla fuse traditional skills with modern technology. If you require new joinery, creating your unique product begins in our UK-based manufacturing facility, and takes between 6 and 10 weeks.
Installation
The utmost care is taken to deliver quality products and renovation works that exceed our customers’ expectations. Varying from area to area, Ventrolla lead times depend on how busy we are, and the work required. On average, our installation team will be on site between 6 to 18 weeks from the date your order is placed. We will advise guide installation dates when you place your order.
Aftercare
Our customers come back time and time again – when they move or if they’ve phased their works – all thanks to our exceptional customer service and after care. In the unlikely event that your Ventrolla products require expert attention, we’re always on hand.
Guarantee
Renowned for delivering outstanding quality, all our work comes with a minimum 5-year guarantee (subject to terms), for absolute peace of mind.
Product Options
- Timber Types and Finishes
- Glazing Options
- Window Furniture
- Specifications
Timber Types and Finishes
Timber Types:
- European Redwood: A classic choice, known for its durability and cost-effectiveness
- Accoya®: Modified timber with exceptional stability and longevity
- Oak: Premium hardwood offering natural beauty and strength
- Sapele: Tropical hardwood with a rich, reddish-brown colour
Finishes:
- Fully factory finished paint (any RAL colour)
- Stained: Enhances the natural beauty of the timber
- Primed: Ready for on-site painting
- Dual colour: Different colours for interior and exterior
Glazing Options
- Single glazing: Ideal for listed buildings and conservation areas
- Double glazing: Excellent thermal and acoustic performance
- Slim double glazing: Combines period aesthetics with modern insulation
- Triple glazing: Maximum energy efficiency and sound insulation
Window Furniture
Exquisite timber sash window ironmongery hand forged using traditional skills
Compromising on quality simply isn’t an option at Ventrolla, which is why we source our sash window furniture from the very best that the industry has to offer.
Retaining the character of your new sash windows in every aspect, our classic collection of fittings includes quality sash locks, sash lifts, sash stops, D Handles, travel restrictors, tilt knobs, and pole eyes. With a diverse range of finishes, from polished brass sash lifts to antique brass Brighton catches, and chrome plate ring sash eyes to satin nickel sash restrictors, breathing new life back into your heritage home is easy with Ventrolla.
- Traditional brass fittings
- Modern chrome fixtures
- Antique-style ironmongery
- Sash lifts, locks, and pulleys in various finishes
Specifications
Specs
Colours
Finish
Material
Shape
Length
Width
Height
Warranty Description
CAWS
Double Hung Timber Sash Windows
Beige, Black, Blue, Bronze
Brown, Copper, Cream, Gold
Green, Clear, Grey, Ivory
Orange, Pink, Purple, Silver, Red
Turquoise, Yellow, White, Other
Painted
Timber
Circle, Crescent, Diamond, Elliptical
Hexagon, Kite, Octagon, Oval
Parallelogram, Pentagon, Rhombus, Rectangle
Square, Trapezium, Trapezoid, Triangle, Other
Bespoke
Bespoke
Bespoke
5 years
L10/10 Wood windows
L10/210 Wood windows
Frequently Asked Questions
How long do timber sash windows last?
With proper maintenance, our timber sash windows can last 60-80 years or more, significantly outlasting uPVC alternatives. Many of our windows installed in the 1980s are still functioning perfectly today.
Are double hung timber sash windows energy efficient?
Yes, our double hung timber sash windows offer excellent thermal performance, especially when fitted with double or triple glazing. They can achieve U-values as low as 1.4 W/m²K, exceeding current building regulations.
Can I install double hung sash windows in a conservation area?
Absolutely. Our windows are designed to meet strict conservation requirements while offering modern performance benefits. We have extensive experience working with conservation officers and have successfully installed windows in numerous listed buildings and conservation areas.
How often do timber sash windows need to be maintained?
We recommend a basic clean and check annually, and a more thorough maintenance check every 5-7 years. Repainting or re-staining is typically needed every 8-10 years, depending on the exposure to weather.
Can you match existing windows in my period property?
Yes, we specialise in creating exact replicas of existing windows. Our skilled craftsmen can recreate any moulding profile, glazing bar pattern, or unique feature of your original windows.
Testimonials
“The double hung sash windows from Ventrolla have transformed our Victorian home. They look absolutely authentic but perform like modern windows. The drafts are gone, and our energy bills have noticeably decreased. Couldn’t be happier!” – Sarah Thompson, Cheltenham
“As an architect specialising in period properties, I always recommend Ventrolla’s double hung sash windows to my clients. The quality and attention to detail is unmatched, and their ability to meet conservation requirements while improving performance is impressive.” – James Peterson, RIBA Architect, London
“We were concerned about noise from the busy road outside, but Ventrolla’s acoustic double glazed sash windows have made a tremendous difference. Our home is now peaceful and much warmer too.” – Emily and John Roberts, Bristol
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