Tag - sash window repairs london

What are conservation area rules for windows?

Replacing sash windows is pretty straightforward. Unfortunately, when you live in a conservation area, that makes the matter far more complicated. You wouldn™t think windows would cause too much trouble for homeowners, but homes built within a conservation area need special permission to be replaced or repaired. So, what are the rules for windows in a conservation area?

Permission is needed for all sash windows

Regardless of whether you want to upgrade or repair old windows, they are likely to require special planning permission from the local authorities or conservation board. It™s a huge challenge because double glazing and UPVC windows are typically banned in conservation areas. The reason is down to the fact that conservation is there to protect the look of the original building. So, every little change (to the exterior) must be sympathetic to the original design.

It means replacing old sash windows becomes tougher, although not impossible.

Is planning permission necessary for all conservation areas?

In simple terms: yes, you are typically going to need permission to make any alterations or changes to windows in conservation areas. Typically, local authorities want to see more like-for-like repairs than new window installations. That doesn™t mean to say you can™t repair old sash windows on your property; you just have to do so in a manner that™s in line with current guidelines.

Understanding the guidelines

Planning applications are necessary to install new sash windows. Remember, if the new windows ˜destroy™ or are considered a ˜threat™ to the character of the building, your application may be rejected. It is, however, possible for you to install UPVC windows even in a conservation area. Of course, the number one rule to this is that the new windows cannot be significantly different from the original design.

Why are there restrictions in conservation areas?

Conservation areas were created to protect and preserve historical buildings. It can be a great thing as period properties (that hold lots of historical value and beautiful designs) are preserved for the next generation. Of course, there are drawbacks to conservation, including issues replacing old sash windows.

It™s important to seek advice before installing new windows or making any changes to the building. You should also understand the local restrictions and laws when it comes to conservation. Typically, if your new windows are in line with the old sash windows, your application shouldn™t run into difficulty (not much, anyway).

Know where you stand before you make any alterations

Buying a listed or protected building can be wonderful because it™s a part of history. Some of the original features can be gorgeous and priceless in many ways. Of course, there are issues with making changes, especially to the exterior of the property. You™ll need special planning permission to alter the windows of a listed building or one that™s within a conservation area. Fortunately, with a little know-how, you can install new sash windows or make repairs with little effort.

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How to winter-proof your sash windows

As energy bills are rising, and temperatures are dropping, you might be thinking about ways you can make your home more energy efficient. One of the things you might want to think about is your sash windows. While floors, walls and attics can be easily insulated against winter heat loss, windows are one of the biggest culprits of causing icy homes. Here are some of the ways you can winter-proof your sash windows¦

Hang thermal curtains

Thermal curtains are a great way of retaining warmth in your rooms. They form an insulated barrier against cold windows, trapping old air between the glass and the window, preventing it from entering your home. If you want to make the most of the sun (on those days it™s out), don™t forget to open your curtains on sunny days so the heat can shine into your house.

Reseal your windows

Even a quick whip around with caulk can make a huge amount of difference when it comes to winter-proofing your sash windows. Keep an eye out for thin cracks or gaps around the edges of your window joints and caulk these to prevent icy drafts from flowing into your rooms. If you are looking for a more permanent solution, gaps around your windows may indicate you are in need of sash window repair.

Apply a temporary window film

A window insulation film is made of thin, transparent plastic (quite like cling film), which is applied to windowpanes before being heat shrunk using a hairdryer. This creates a close fit around the windows that can be useful for draught-proofing windows in winter.

Upgrade your sash windows

Naturally, the ultimate way to winter-proof windows is to upgrade them to double-glazed timber units, which are specially designed to keep the heat in your home. Double glazing works with the air itself which acts as a poor conductor of heat, trapping an insulating blanket of air between the panes of the glass. This layer of air acts as a barrier, keeping your home warm.

If you are considering upgrading your sash windows, whether they are in need or repair or you want them to be more energy efficient, we can help you. We restore and repair sash windows across London, get in touch to find out more.

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Sash Windows vs Casement Windows

When it comes to choosing windows, it™s between sash and casement windows which both have their differences in the way that they function.

The correct window makes all the difference when it comes to the property™s look. There are two principal types of windows: casement and sash. Once the correct type is chosen, it™s best for consistency to have the same style throughout the house.

The main difference between a sash and casement window is as follows: casement windows are very common and come with hinges that allow them to swing open easily. They are bought in pairs. They have a crank which also allows the window to lock in place “ usually a handle fits into place. The benefits of it are it prevents the wind from pushing the window out of place.

Sash windows are different and remain popular “ they are made up of multiple panels that slide on top of another to create separate individual openings. There are two main types of sash windows: those with two mobile sashes and the others which have one fixed and a mobile sash.

The Advantages of Casement Windows

The debate centres on which is the best one for the actual home environment. Casement windows are very energy efficient allowing for a tight seal.

Casement windows have a popular modern look ideal for the domestic setting “ as well as being available in a variety of materials and styles.

The casement window allows for better protection against home invasion, as they provide resistance to break ins. They would have to smash the window to break in which would alert anyone in the premises.

The greatest advantage is large glass panels which allows the most amount of light to enter.

The Advantages of Sash Windows

Sash windows can open easily and have a more basic design with less room for functioning problems. This also allows for an easy fix if there™s a problem.

They provide a traditional look that complements the interior design of most period properties.

Another benefit is it opens inwards which means that no matter where the window is located, you™ll be able to open it and let the air inside without external obstruction.

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Why Draught Proofing Your Sash Windows Can Cut Energy Bills

The Benefits Of Sash Windows

Sash windows are a stunning option for your home. They contain two frames that slide vertically which improves airflow. Plus, their design derives from 17th century England which gives them a historical and aesthetic look. Here are a few reasons why you should install sash windows.

Why Install Sash Windows At Home

Good For The Environment

Sash windows often contain a timber frame which makes them very environmentally friendly. This is because it takes less energy to create and transport these windows. Not to mention, timber can be easily recycled or reused so a sash window itself is made from recycled materials.

Intricate Design

Sash windows can be designed in various ways to suit your style needs. It is possible to carve, paint or stain the wooden parts to maximise the beauty of your home. Standard windows with plastic frames do not offer this option so this versatility is incredibly valuable. Whatever style you are looking for, you can customize the timber frame of a sash window to match your requirements.

Highly Durable

A sash window can resist tough weather conditions for many years due to the strong fibres and cellulose within the wooden frames. So sash windows are a phenomenal investment as they can last a very long time. As a material, timber is just as durable as those used in construction.

Help To Keep Your Home Warm

Timber sash windows are brilliant for insulation and in these cold, winter months they can help your home feel warm and toasty. After all, wood is often used in wooden frames as it is durable and provides great insulation. Additionally, modern sash windows are drought-proof which further prevent cold from coming in. Therefore, sash windows can help lower your energy bills as you don™t have to blast the central heating constantly.

Always Fashionable


Sash windows are a beautiful asset to any property and it has been this way for many years. It is always in high demand, so installing them can increase the value of your home. Furthermore, sash windows are continually improving with new features and designs to complement the appearance and comfort of your house.

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Should I Repair Or Replace My Sash Windows?

Sash windows are a common feature of houses in the UK. Despite looking aesthetically pleasing, over time they can become less energy efficient. But how do you know when it is time to invest in sash window repair or replace it altogether?

How You Can Repair Sash Windows

A common problem with older sash windows is the lack of insulation they provide. Single, glazed panes can wear down and become draughty which may lose heat from your household.

However, you can easily fix this problem by upgrading to double glazing instead. This can be done without replacing the sash window.

Repairing your sash window with double glazing allows you to trap a greater amount of heat. In addition, two strong panes trap a gas between them like krypton or argon which forms a superior barrier between the warm inside and cold outside. This prevents thermal bridging and condensation, both of which can make a home much cooler.

Sash window repair is an investment, yet in the short term, you will have a warmer house, lower energy bills and won™t need to get rid of your existing window frames.

Why You Should Replace Them

Notwithstanding, there are situations where you are better off replacing your sash windows.

Upgrading your windows with better materials increases the chances of it lasting longer. For example, modern glass is very durable and newer frames are more resilient when it comes to water damage and rot. So you won™t have to worry about window repair for a long time.

Another reason is if your house is extremely cold or droughty. Modern sash windows are much better at preventing heat loss. Double glazing makes it more difficult for air to get through while high-quality timber frames are less likely to swell.
Finally, sash window repair could be the more expensive option long term. After all, an old window may need regular maintenance to ensure it is still working properly. In contrast, a one-off investment of new, modern windows will keep your home warm for years to come and simultaneously lower energy bills.

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How to Choose the Right Sash Window Company for Your Home

Georgian, Victorian and Edwardian Sash Windows

There are three main types of sash windows in Britain, and these have been an architectural feature for over 200 years. These windows can tell you a huge amount about the history of a property. 

As home owners become more interested in conserving the historic features of their home, they spend more time maintaining and caring for their sash windows, and they may become more curious about how old their sash windows are, and what they have seen throughout their history. 

Types of Sash Windows

Single hung sash windows are the oldest design, these date back to Georgian times, they have only one section and this moves with a single pane of glass.

The Georgians were also responsible for developing this style into double hung sash windows. These were then taken on into the Victorian and Edwardian age. These windows feature panes placed in a variety of arrangements including six-over-six, four-over-four, nine-over-nine and six-over-two.

There are also horizontal sash windows, these have two sashes that slide sideways, as opposed to up and down. This design is far less common than conventional sash windows, so if your house features these you are very lucky.

If you have been unable to match your sash windows to the above designs, your architect may have gone rogue and added their own personal touch.

Periods of Sash Window Design

Georgians particularly adored the six-over-six design of the double hung sash window, they also introduced smaller panes of glass that were separated by glazing bars.

Victorians, in contrast, preferred one large pane of glass. They chose to feature their larger sash windows on the ground floor, and smaller sash windows on the upper floor. 

Edwardians adopted a, somewhat random, multi-pane approach, they used multiple panes of glass on the upper sash and a single pane of glass on the lower sash.

Whichever style of sash window your home features, we can help with sash window restoration, ensuring they look as good as the day they were designed. 

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How Do Sash Windows Work

Sash Window Operation Instructions

Sash windows are vertically opening windows that consist of two framed window sashes, one positioned in front of the other. This style of window unit sits in frames with vertical grooves, which allow them to move up and down smoothly. The up and down movement is assisted by counterbalances which are weights on cords and pulleys.

When closed, the top and bottom sash will be locked together at the midrail to prevent them sliding. There may be handles attached to the sashes to help you open them, depending on the window design.

The window can be opened by sliding the bottom sash upwards or, if you have a double hung window, by sliding the top sash downwards.

Sash windows can be fitted with complex hinge systems that allow the window to be locked on one side while the counterbalance on the other side can be detached. This is a helpful feature that can allow the window to be opened to let fresh air into your home, to get out, or to clean.

The design of sash windows also have benefits such as:

  • They look good: they follow a smart aesthetic and increase the value of the building.
  • Sash windows are safe & secure: only one panel can open at a time meaning that they are a lot more difficult to break into than cement windows. It is also easy to have additional features added for safety precautions such as locks and child safety devices.
  • Low maintenance: modern sash windows have a very low risk of warping and rotting as they are made of metal and plastic. You don™t need to sand them or apply coats of varnish either. More traditional sash windows are made from wood, but with appropriate care and maintenance they will have a long life.
  • Environmentally friendly: timber-framed windows are environmentally friendly as it uses the lowest amount of energy in its processing, production and transport. It also has a very long life-span meaning it won™t have to be replaced as regularly as other windows.
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Sash Windows

The History and Evolution of Sash Windows | Mortice & Green

There is some debate as to the exact origin of sash windows, but they can be traced back to somewhere in the 13th century in Europe. Although they may not have been worthy of the ˜window™ title at that point, they were more like vertical sliding wooden shutters. Flash forward 300 years and by the end of the 16th century they had evolved into a form we would recognise today but were able to slide horizontally. Then, sometime in the 17th century the French noticed that it was safer to use vertical sliding windows as they didn™t open inward which causes impediments to the residents of the building.

Vertical Sliding Sash Windows

The sophisticated style of sash windows soon moved across the channel and became a fashionable status symbol across Britain and the colonies. Many earlier casement windows were replaced with sash windows in notable buildings such as Kensington Palace and Hampton Court Palace. Soon after that sash windows were used almost exclusively in any building from a royal residence to a simple cottage.

Georgian Sash Windows

In 1666 something happened that would further shape the evolution of sash windows, a fire started on Pudding Lane and grew into a four-day blaze that destroyed an estimated 13,200 houses. After this, building regulations were drastically overhauled in an attempt to reduce the risk of further fires and inhibit their possible spread. The regulations stipulated that timber window frames should be recessed behind the brick façade, leading to the development of Georgian architecture.

Victorian Sash Windows

The Victorians lavished ornamentation and decoration on their homes. Curved horns, multi-ached heads, intricate mouldings, leaded lights and lattice work started to appear in combination with sash windows. The windows were often grouped into impressive bays and offset with ornate stone.

Edwardian Sash Windows

Beginning when Edward VIII became king in 1901, and lasting only util 1920, when he died, the Edwardian period borrowed from the eras before it, combining the best of Georgian and Victorian. Although the period was only short, there was a housing boom in this era which means the architecture of that tine heavily dominates our present homes.

Modern Sash Windows

The modern design of sash windows has continued to be developed and refined as new techniques and materials appear and are incorporated into the windows. At Mortice and Green, we are pleased to continue with this process of development. Sash windows offer you a degree of beauty and history that modern windows just can™t compete with, so we are always eager to do everything we can to repair and preserve them. Get in touch if you want to know more about how we can help you restore your windows to their original beauty.

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Mortice and Green Sash Windows London

Why Mortice and Green is the best choice for sash window repairs in London

Sash windows are one of the most popular models in London. Because they™ve been around for several centuries “ they™ve been introduced shorted after the Great Fire of 1666 “, it™s fair to say that sash windows are a staple of historic buildings. If there™s one thing that every Londoner agrees on is the diversity of old buildings and houses of all ages in the capital. From elegant Edwardian residences that have been turned into cosy flats to quirky post-war buildings, sash windows are almost everywhere in the city.

 

Their unique character is attached to an era that Londoners are unwilling to forget. As such, sash windows are rarely replaced for different models. Instead, their individual quality and structure are restored carefully to maintain the chic window features.

Consequently, if you own sash windows and are considering repair or restoration works, you need to find a partner you can trust. While there are many window specialists in the UK, not everyone can provide the level of expertise and care that Mortice & Green deliver to their London-based customers.

 

Because it™s a family business with 25 years experience

Founded in 1994, Mortice & Green have been around for 25 years. Because we are a small family business, we dedicate our full attention to our knowledge and practice day after day. Therefore, it™s fair to say that we™ve seen it all. We™ve come across a variety of challenges when it comes to sash window repairs and renovation, related to the structure of the window, the material used, or even its general accessibility.

 

Over our time as a business, we have had to face many different situations with sash windows in London, so that we can safely ensure our future clients that we™re confident in our skills. We know our job and have been doing it for many years to help homeowners across the capital regain full use of their windows.

 

Because we can fit realistic and quality reproduction

Nothing looks more realistic than the real thing. Sash windows were originally made out of wood, which is why we provide hardwood replacement that matches the original features. While in the old days, most sash windows in London were built out of pine wood “ for obvious cost reasons “ we, at Mortice & Green, offer high-quality hardwood. We use oak for our structures and frames “ oak was the material of choice for the wealthy population at the time of the window first introduction. Through this process, we are able to match the period and style of the original features, ensuring that your sash window can work like new without affecting the overall look and feel of your home.

 

It™s also worth mentioning that our frames are fitted with double glazing, to tackle the energy loss issue and temperature discomfort that you might have experienced with older models.

 

We provide a level of expertise you can™t find elsewhere

Of course, PVC models can be nice. But if you™re going to keep your sash window design, you want something that can look and feel like the real thing. We, at Mortice & Green, understand the role your windows play in your decor. That™s precisely why we take the time to understand each sash design and work with the best hardwood material. We want you to enjoy your sash window and recognise that the frame has been renovated carefully to fit the unique requirements of your building. Because we work with wood, your home doesn™t lose any of the natural balance and harmony that the original window provided. In fact, if anything, you might feel like our work has taken your window back in time! It™s not a service you can find with national chains because our expertise is specialised on realistic renovations.

 

Because we know London like the back of our hand

We™ve worked in London for a quarter of a century. So, yes, we don™t need help to navigate through the small lanes and tall buildings. More importantly, we™re used to challenging architecture and narrow spaces. Whether you™re considering renovating your Victorian gothic sash windows at the end of a cul-de-sac or repairing the 1950s sash models in your flat in central London, we can come to you and get the job done when it suits you best.

 

Because our know-how goes beyond sash windows

Sure, while sash windows are our expertise at Mortice & Green, our understanding of wood architecture and frame has been helpful to fix any type of wooden windows. That special knowledge makes us a preferred partner for the renovation of historic buildings.

 

Mortice & Green are the specialists of sash window repairs and restoration in London. With a long experience in helping homeowners to rediscover and enhance their stylish window features, we are confident we can help you with your window improvement projects. Don™t hesitate to get in touch to discuss your needs.

 

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sash window repairs in London

When it comes to sash window repairs in London, this is a fairly common undertaking. It’s fairly common that over time your sash window starts to develop wear and tear, but this doesn’t necessarily mean your window needs to be replaced. Instead it could just be that you need some refurbishment and repairs did to the window and/or sill.

Sash window repairs in London are not the easiest thing to fix but they can be done by a professional with the appropriate skills and tools in order to offer competent London sash window repair service. With stuck or broken windows repairs can be done by yourself or with the help of a contractor. Sometimes windows can be a source of heat-loss in many homes. They can stick and refuse to open if they have swollen from humidity. If you have blinds on the inside of your window they may refuse to work correctly. There are many things you can do as a homeowner or business owner to ensure that your Mortice & Green window work properly.

One of the biggest issues that people face is windows that refuse to open. The wooden windows north have a higher risk of getting stuck especially in older houses. Many times this is caused by a window which has recently been painted and the paint seals around the window and keeps it closed. In this instance the solution is an easy one: all you have to do is break the paint seal and clear all of the tracks from debris. Once this is done all you have to do is lubricate the tracks and they will work right fine.

If this does not fix the issue then you need to check the tracks. The tracks which are located above the sash window may be blocked as a result of paint build up. You can take a hammer and a chisel and use them to remove any of the paint that has been left behind on the tracks. You can cut out the paint that has tried thickly but be careful not to make a gouge in the wooden tracks. You can then smooth out the window tracks using sandpaper. Once this is done you should spray it down with lubricant.

Should this not work to repair the issue then you can use a pry bar from the outside of your sash window. Start with the flat end of the bar and insert it beneath the sash window. If you need additional leverage, then you can set scraps wood underneath the bar. You should then pry at the corners gently and move toward the center of the window. Be careful because too much pressure can cause damage to the window frame as well as the sash. Once you have opened the window you should clean off the tracks and apply a silicone spray to lubricate the tracks. If the problem persists, then call upon a carpenter for London sash window repair service in order to fix it instead of trying to force it open.

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