Get your fast, no-obligation quote today from our expert team—simple, quick, and completely free.
Preserve your property’s original charm while upgrading performance, comfort, and longevity.
Get a Free Quote
Get your fast, no-obligation quote today from our expert team—simple, quick, and completely free.
Professional Sash Window Repair & Restoration in London is what you need when your timber sashes are stiff, draughty or showing their age, and you want the work done properly without losing the character of your home.
At Daniel's Contractors, we repair and restore traditional sash windows across London and Surrey, combining skilled carpentry and joinery with careful project management. Our team of building professionals brings over 23 years' experience to every job, whether you own a Victorian terrace, a Georgian townhouse or an Edwardian family home.
Sash windows depend on balanced weights, pulleys, cords and fine joinery all working together. When one part fails, the whole window suffers. Our expert sash window repair service covers the problems homeowners face most often:
Each repair uses traditional joinery techniques and durable materials, so the window keeps working well and stays true to its original design. Before any work begins, we explain what needs repairing, what can be saved and what is worth upgrading, so you can decide with confidence.
A broken cord is the most common sash fault. Once it snaps, the counterweight is lost and the sash will not stay open.
Our sash cord and pulley repairs restore smooth, balanced operation. We replace worn cords, renew seized or damaged pulleys and check the weights so each sash moves easily and stays where you put it.
Older London homes that have been redecorated many times often have painted-over pulleys. We free the mechanism carefully to avoid damaging the surrounding timber.
Old windows are often blamed for heat loss, but gaps are usually the real culprit. Our draught-proofing and weather sealing service fits discreet brush seals and compression strips into the existing window, with no visible change to its appearance.
The benefits include:
Fewer draughts around the window help create a more comfortable interior.
Better sealing helps reduce unnecessary heat loss from your property.
Improved sealing can be particularly useful on busier London roads.
Carefully fitted seals help create cleaner and more comfortable rooms.
Because the work is subtle and reversible, it suits conservation areas and listed buildings where appearance matters.
Cracked or misted glass spoils the look of a window and reduces efficiency. Our glazing replacement and upgrades service lets you choose what suits your property.
We can reglaze with traditional putty and period-style glass for an authentic finish, or fit slim-profile double glazing that improves thermal performance while keeping the delicate proportions of the original sashes.
For listed buildings and conservation areas, we advise on what is acceptable before work starts.
Rot does not always mean replacement. Our timber restoration and splicing work removes only the damaged section of a sill, rail or frame and joins in matching, well-seasoned timber with precision.
Compared with replacing the whole window, this approach:
When the surrounding box frame has deteriorated, the whole window is affected. Our full box frame refurbishment or replacement service ranges from rebuilding worn components to constructing a new frame where repair is no longer viable.
We reuse sound original parts wherever possible, renew linings, parting beads and staff beads, and make sure the finished window runs smoothly and sits tightly in its opening.
Some windows are beyond repair, or have already been replaced with unsuitable modern units. Our bespoke sash window replication service recreates historic designs by matching glazing bar profiles, horn styles, proportions and joinery details.
The new windows sit naturally alongside the originals, which is especially important for listed and period properties, where planning authorities expect faithful reproduction of traditional features.
A well-managed window project starts with careful planning. We keep you informed from the first visit through to completion.
We inspect each sash, frame, sill, cord, pulley and pane, then explain your options clearly, along with likely timescales and costs.
Listed buildings and conservation areas may have restrictions on window changes. Where approvals are needed, we advise on the right approach before work begins.
Our team carries out repairs, splicing, reglazing, draught-proofing or replication using traditional joinery methods, taking care to protect your home and keep disruption low.
We check that every sash runs smoothly and sits tightly in its opening, tidy the site and complete any snagging so you are happy with the result.
Choosing a specialist matters. Our approach combines traditional joinery knowledge, careful restoration and practical improvements while respecting the character of your property.
Our building professionals bring decades of hands-on knowledge to every project, large or small.
The same skilled team handles timber repair, replication and finishing with careful attention to detail.
We repair before replacing and replicate only when needed, helping protect original architectural features.
Ruslan and the wider team coordinate every stage with attention to detail.
Clear discussions about timelines, decisions, changes and costs, with no hidden costs.
We work in line with UK building regulations and are TrustMark registered and a Federation of Master Builders member.
We recommend practical options, such as splicing instead of full replacement, where they deliver quality without unnecessary cost.
"Ruslan and his team did a number of projects on my ground floor flat, including replacing sash windows, painting and decorating and interior carpentry. They did an excellent job. Very responsive, kept to timetable..." — Phil
We work throughout London and Surrey, including Islington, Hampstead, Ealing, Wimbledon, Fulham, Kensington, Richmond and Kingston upon Thames.
If your area is not listed, get in touch and we will confirm whether we can help.
From a single sticking sash to a complete period-property restoration, we provide careful, practical and professional sash window services tailored to your property.
Our aim is to preserve the character of traditional timber sash windows while improving their operation, comfort, durability and long-term performance.
All work is carried out with meticulous attention to detail and respect for your property’s character. We use high-quality, durable materials and traditional joinery techniques to ensure each window looks and functions beautifully for years to come.
From minor repairs to full-scale restoration, our service is trusted by homeowners, conservation officers, and heritage professionals alike. We combine craftsmanship with care — ensuring your sash windows remain a defining feature of your home, both now and into the future.
At Sash Windows Repair Services, we specialize in the restoration, repair, and upgrade of traditional timber sash windows, preserving their historic charm while improving performance and longevity.
Sash cord and pulley repairs
Draught-proofing and weather sealing
Glazing replacement and upgrades
Timber restoration and splicing
Full box frame refurbishment or replacement
Bespoke sash window replication for listed and period properties
From renovations to new builds, we offer tailored solutions to meet your needs with expert craftsmanship and attention to detail.
Maximise unused attic space with stylish loft conversions. We create practical, light-filled rooms that blend seamlessly with your home’s structure and design.
From small updates to full renovations, our refurbishment services revitalise your home with expert finishes, quality materials, and a keen eye for detail.
Expand your living space beautifully. Our house extensions are built with precision, offering smart layouts & seamless integration.
TESTIMONIALS
Our clients trust us for professional air conditioning services. See what businesses and homeowners say about our expert installations and top-notch customer service.
We are very pleased with the work done by Daniels Contractors! They did some renovations in our house, Ruslan and his team were welcomed and so helpful. We are extremely happy with the result, as we thought it would take more time, but the guys did everything quickly and even helped improve aspects that we did not notice at first.
Daniels did an absolutely terrific job on our rear extension, we couldn’t be happier! They were professional and responsive, and kept us in the loop at every stage. Excellent communication and results, we are thrilled with the completed product!
Daniel’s Contractors was the main contractor to convert a single storey garage type of dwelling to a three-storey residential house. The job was done to a high standard within the timeframe agreed at the start. Michelle and Russ were polite and professional. I could rely on them to work with different professionals involved on the development and they always found solutions to solve problems. Michelle has a very good taste on choosing tiles, timber floor and kitchen units. I will definitely work with them again.
We’re always ready to help you take the first step toward your perfect property solution. Let’s start the conversation.
Friendly Support
At Daniel’s Construction, we offer friendly and approachable customer support, always ready to answer your questions and assist with any needs you may have.
Insured Service
We provide fully insured services, ensuring complete peace of mind with every construction, extension, or renovation project we deliver to our valued clients.
Get Free Quote
Contact Daniel’s Construction today for a free, no-obligation quote, and let us help you plan the perfect construction solution tailored to your needs.
FAQ
We’ve gathered the most common queries to help you get the clarity you need on your next project.
The timeline for a home extension can vary based on the scale and complexity of the project. On average, most extensions take between 10 to 16 weeks, including planning, groundwork, structural build, and finishing. We always provide realistic schedules upfront.
Many loft conversions fall under permitted development, meaning planning permission may not be needed. However, certain designs, locations, or building types may require approval. We’ll guide you through the process and handle all necessary permissions and documentation on your behalf.
Daniel’s Construction proudly serves residential and commercial clients across London and the surrounding counties. If you’re outside the main service area, feel free to get in touch — we’re often able to accommodate requests depending on the nature of the job.
Yes, all our work is fully insured and carried out by qualified professionals. We hold relevant certifications and follow UK building regulations strictly, ensuring complete peace of mind for every client from start to finish, regardless of project size or complexity.
We perform a thorough site assessment before starting, but if unforeseen issues arise, we’ll keep you informed immediately. Our team will offer transparent options and adapt as needed, ensuring the project remains on track without compromising quality or budget.
It depends on the scale of the project. For lighter refurbishments or painting, it’s often fine. However, for major structural work, we may advise temporary relocation to ensure safety, minimise disruption, and allow our team to work efficiently throughout.
Absolutely. We provide clear, detailed quotes with a full cost breakdown and a proposed timeline. We believe in full transparency, so you’ll know exactly what to expect before any work begins—no hidden charges or vague deadlines, just straightforward service.
We source only high-quality, UK-compliant materials from trusted local suppliers. Our team ensures every product used in your project meets our standards for durability, performance, and aesthetics, guaranteeing a finish that looks great and stands the test of time.
The timeline for a home extension can vary based on the scale and complexity of the project. On average, most extensions take between 10 to 16 weeks, including planning, groundwork, structural build, and finishing. We always provide realistic schedules upfront.
Many loft conversions fall under permitted development, meaning planning permission may not be needed. However, certain designs, locations, or building types may require approval. We’ll guide you through the process and handle all necessary permissions and documentation on your behalf.
Daniel’s Construction proudly serves residential and commercial clients across London and the surrounding counties. If you’re outside the main service area, feel free to get in touch — we’re often able to accommodate requests depending on the nature of the job.
Yes, all our work is fully insured and carried out by qualified professionals. We hold relevant certifications and follow UK building regulations strictly, ensuring complete peace of mind for every client from start to finish, regardless of project size or complexity.
We perform a thorough site assessment before starting, but if unforeseen issues arise, we’ll keep you informed immediately. Our team will offer transparent options and adapt as needed, ensuring the project remains on track without compromising quality or budget.
It depends on the scale of the project. For lighter refurbishments or painting, it’s often fine. However, for major structural work, we may advise temporary relocation to ensure safety, minimise disruption, and allow our team to work efficiently throughout.
Absolutely. We provide clear, detailed quotes with a full cost breakdown and a proposed timeline. We believe in full transparency, so you’ll know exactly what to expect before any work begins—no hidden charges or vague deadlines, just straightforward service.
We source only high-quality, UK-compliant materials from trusted local suppliers. Our team ensures every product used in your project meets our standards for durability, performance, and aesthetics, guaranteeing a finish that looks great and stands the test of time.