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Why would a sash window require repair?

Sash windows are constructed from several different pieces of timber. Any one of these sections could become decayed and would require repair or sectional replacement. Leaving these sections unresolved could cause long term decay to surrounding sections and lead to a situation where replacement of the entire window is the most economical solution. At Fortis & Hooke we believe that replacement of a original window is the last option. Therefore, we’ve created cost effective ways to repair or replace decayed sections by combining modern technology with good old carpentry skills. Our aim with these repairs are to ensure that the problem is resolved permanently and thus provide the sash window owner with a long term solution, rather than a short term fix.

The following sections discuss particular areas of a window that we’ve found to be prone to decay.

Sill repair or replacement

The sash window sill tends to first show signs of decay. The sill is the bottom section of the sash window. It is where most water lies and, subsequently, this causes the paint to flake – effectively opening up areas where water can penetrate the timber and cause decay.

Water marks beneath your sash window is a tell-tale sign of a rotten sill. These watermarks are usually caused by an opening between the timber sill and the masonry sill. This “opening” could just be due to bad sealing, but could also have been caused by decay.

A rotten sill does is not necessarily a cue for full window replacement. At Fortis & Hooke we can repair or replace any sash window sill with a new hardwood section. This will resolve the sill problem and leave you with a solid foundation for your sash window.

Bottom rail repair or replacement

The sash window bottom rail is one of the sections of a sash window that could develop decay due to bad maintenance. The bottom rail is the bottom section of the bottom opener on a sash window. Due to superfluous putty or internal condensation water could saturate into any open timber on the bottom rail. This saturation of water would cause decay.

A rotten bottom rail is not a cue for full window replacement. At Fortis & Hooke we prefer to repair or replace a bottom rail with a new hardwood section. This will resolve the problem and prevent the replacement of the entire bottom sash.

Middle rail repair or replacement

The sash window middle rail is another section of a sash window that could show decay due to bad maintenance. The middle rail is the bottom section of the top opener on a sash window. The same issues that bottom rails suffer are also prevalent on middle rails. Due to superfluous putty or internal condensation water tends to saturate into any open timber on the middle rail. Due to the saturation into the timber there could be sectional decay in a middle rail.

However, as with a bottom rail, a rotten middle rail is not a cue for replacement of the entire window.

At Fortis & Hooke we would repair or replace a decayed middle rail with a new hardwood section. This would resolve the issue and prevent unnecessary replacement of the entire top sash.

Frame repair

The last section of a sash window that could need a repair is the sash window frame.

The frame mostly shows some decay where it meets with the sill. Sometimes there is a tear between the sill and the frame, which causes water ingress and subsequent decay.

This type of repair is usually very small and can be resolved easily.

Glass replacement

At Fortis & Hooke we offer a wide range of glass replacement services. These services range from normal glass replacement to the installation of special glass, i.e. sound reduction glass.

We also offer a double glazing option where we can retrofit new double glazing into existing sashes.

Broken down putty

Broken down glazing putty is a major contributing factor to rotten sash windows. Putty ensures that the glass and open timber rebates are sealed properly to protect against water ingress. Should a gap develop, water ingress would potentially lead to rotten sections.

It is therefore essential that your window putty is checked and maintained to ensure it is doing what it is supposed to.

Glazing

Our range of bespoke sash windows features double glazed safety glass as standard but can be tailored to your exact requirements, incorporating other glazing styles and specifications such as toughened and laminated glass, acoustic glass, and textured, obscured or stained glass.

Moulding

All of our traditional timber windows feature authentic moulding that will perfectly complement your property. Our internal mouldings are created bespoke to match the original mouldings in your home, while outside detailing such as glazing bars and horns are matched to existing features.

Colour

All of our sash windows can be finished in the exact shade of your choice. We use high pigment, resin-rich microporous paint by British paint experts Farrow & Ball, renowned for their beautiful, premium quality paints and stunning, unmatched shades since 1946.

Ironmongery and Opening

For the perfect finishing touch, our traditional sash windows come with a choice of solid metal fittings in classic brass, stylish copper and sleek chrome and satin chrome. Bespoke fittings can also be arranged on individual specification.

The most popular finishes for our ironmongery items are Polished Brass, Satin Chrome, Polished Chrome and Imitation Bronze.

Construction joint tearing

All sash windows have construction joints. These joints tend to separate leading to water ingress and resulting in paint breakdown and rot.

It is essential that your window joints are checked and repaired to ensure that they are not providing an entry point for moisture.

The aforementioned services are all available on request.

They offer value for money solutions to most sash window repair problems. Please feel free to contact us should you require one of our surveyors to visit you for a professional survey.

Construction joint tearing

All sash windows have construction joints. These joints tend to separate leading to water ingress and resulting in paint breakdown and rot.

It is essential that your window joints are checked and repaired to ensure that they are not providing an entry point for moisture.

The aforementioned services are all available on request.

They offer value for money solutions to most sash window repair problems. Please feel free to contact us should you require one of our surveyors to visit you for a professional survey.

Double hung sash window Acton usually comes with two sashes that can be lifted up and down and sits in the window frame. Particularly this type of windows are commonly found in period buildings, this type of windows allows airflow and are very easy to clean. The biggest benefits of double-hung windows is that they provide efficient cooling during warm weather.
Whilst single-hung sash window usually has two sash units, which is top sash is permanently fixed and only the bottom sash unit is able to slide.

Single hung windows are usually engineered of softwood, and these units were traditionally comes as single-glazed. Early sash windows were engineered from durable hard wood that lasted centuries and has been restored throughout history.
The glass quality and density in authentic sash windows must be considered to be very important. Fitted glass type can be plate, broad, thick glass, crown or cylinder. Old type glass can be easily identified by its imperfections and is not very clear which affects distortion of interior and exterior appearance when looking through it and from outside. Most of the old glass can not be replicated or restored, however more clear new glass can be used.

All our timber box sash windows are carefully crafted by hand in the traditional English style to achieve true authentic look. Our made to measure wooden windows will bring that iconic look to even the most modem build properties.
If you are working on period listed buildings, refurbishments or new-build properties, APT Bespoke Joinery is able to match any window style and design.
Our double hung sash units are made in either softwood or hardwood.

Why Our clients choose us.

Sash windows by APT Bespoke Joinery in Acton can be a natural choice for your upcoming new build or renovations – meeting your requirements. Our workshop and spray shop is very well-equipped and based in Acton. Our sash window specialist team is able to manufacture and replicate almost any type of sash units with any design or style to high standards.
If you are looking for beautifully hand crafted period design items such as double hung sash windows, single glazed, double glazed do not look further Joinery is our expertise and you will find the ideal blend of engineering capability, craft expertise and quality finish here.

Our carefully selected and trained timber joiners and spray specialist have vast expertise in the design and manufacture of the traditional authentic modern box, sash and casement windows to best specification. We are able to replace existing windows on a like-for-like including wooden double hung and single glazed sliding box sash windows, bay windows and replacement window frames. We can supply you with made-to-measure bespoke timber windows to fit in existing window openings and we are also able to upgrade or repair your existing window frames with new moving parts.

Tradional English timber sash windows usually come in 4 designs:

Modern – Spiral balanced Sash Window
Contemporary – Mock Sash Window Acton
Classic – Weighted Sash Window
Historic – Weighted Sash Window
We manufacture and supply following wooden sash windows
Edwardian sliding sashes
Edwardian Marginal glazed
Edwardian Six over two
Edwardian Two over two

Victorian vertical sliding sash
Victorian side opening casement

Regency semi circular headed
Regency Marginal glazed
Georgian vertical sliding sash
Georgian side opening casement
Georgian flush fitting casements

Double hung sash windows come with masterpiece mechanism which includes cords, pulleys and weights or spring-balance to operate window by hand. Finished unit can either be prime finished, a natural finish or can be spray-painted to order. These type of windows can be single, double or triple-glazed as required. All are windows are treated with full draught-mask.

 

Casement windows

APT Bespoke Joinery Acton is able to manufacture various types of complete casement sash window, including all designs and configurations in both softwood and hardwood types.
APT Bespoke Joinery is able to replicate casement windows which includes traditional ovolo, lambs tongue ironmongery pieces and square section mouldings. We are able to make and install bespoke timber casement windows which includes traditional flush casements, including modern designs. These window units can be either single or double-glazed according to your windows opening requirements.
Our durable replacement wooden windows are can be manufactured with double or triple glazing which meets current UK regulations. All our wooden casement windows are manufactured ensuring fully draught-proof, helping you to cut down your heating expenses. Our hand crafted casement windows are traditionally designed to add real charm and iconic character to your refurbished or new build property. Our hand crafted authentic timber windows can be restored to period properties and listed buildings, including Edwardian, Victorian and Georgian properties.
If the frames of existing casement windows are in still in good condition we are also able to repair or replace the moving ironmongery parts of the windows.

Also APT Bespoke Joinery can manufacture, double glazed sealed units, such as DGU’s. All our manufactured DGUs windows come BSEN 1279 Parts 1 to 6 and stamped with CE Mark. We manufacture DGUs with our windows, doors and conservatories. Our DGUs are specially made up from 2 pane units of glass, and properly sealed all around the perimeter of frames which makes them airtight.
All of our DGU units comes with dual seal. We use polyurethane sealant, this allows us to offer you a guarantee on our own manufactured units up to 10 years this is only applied when glazing is supplied and fitted by us.
We can also offer special seal, which is made out of epoxy resin; this which comes with a 15-year guarantee (all our glazing is in according with GGF regulations). We are also able to provide triple glazed units which is not made in house and comes from our specialist supplier and their warranty applies according to their specification.

Wood types we use for our bespoke crafted windows
Accoya sash windows – is best tropical hardwood compromises with it’s high performance and durability.

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Douglas fir (Oregon pine) sash windows – Is proven durable and premium grade softwood, which is widely used nowadays.
Advantages of Doglas fir is source of good insulator for sound, as well as heat and electricity. It is also natural fire retard. Its is known to be highly resistant to mechanical and chemical abrasion.
European redwood sash windows (deal, also known as scots pine and Baltic pine) – this type of timber is widely used to make sash windows since 17th century. It incorporates the few blends of pine, spruce and fir and it is imported from Northern side of Europe.
Featuring:
This type of wood is resistant to decay, light weight.

Dark red meranti hardwood sash windows – meranti comes in different red shades and it is quite high in density, as it has been widely available and affordable. Meranti is naturally resistant to decay and insect manifestation.
Mahogany sash windows – are widely used for the construction of sash windows, whilst it is known to be stable timber and quite expensive.
Sapele hardwood sash windows – window units made of this type of wood tend to be quite heavy and are very durable piece of wood.

Our all sash window Acton units features:
Selected Engineered timber
Wood is has been natural and best choice of material for constructing widows throughout centuries. Wooden windows has appealing appearances and solid. However throughout exposed contact with moisture can dramatically damage shape and form. This also can be avoided if extra care has been taken and draught proof mask and paint is refreshed regularly. We can supply specially selected layer engineered wood with the fine grain laying in multiple directions which prevents any twisting or warping and preserves windows for longer period. . This type of engineered timber wood has been used for centuries in Britain.
Modern Double glazing
Double glazing is evolved by making big differences to glass and glazing throughout modern age. It compromised with high thermal insulation with minimum loss in natural light and helps you to cut down you bills.
Micro-porous spray paint
For greater durability we paint and spray our manufactured window units which requires minimal maintenance and tend to provide highest level of protection.
Ironmongery

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We use wide range of ironmongery items and sash locks available in various finishes and styles, can also source more unusual designs if required. All our ironmongery pieces comes from UK suppliers and all items are British made.
The most popular finishes for our ironmongery items are Polished Brass, Satin Chrome, Polished Chrome and Imitation Bronze.
If you have special requirements or need to match items in Listed Buildings, our specialist suppliers can source closest-match pieces or can even arrange for manufacturing to your specification.

Get in contact

For more information about sash windows in London, get in contact with us today either by email, telephone: +44 (0) 208 673 9664 or by completing the online quote form.

Address:

APT Bespoke Joinery,
Unit 6, Zennor Trade Park,
Zennor Road,
SW12 0PS

Opening Hours: Monday-Friday: 8am-5pm

Would You Like to Get a Free Quote?Get Started

GOOD TO KNOW

Sash windows are traditional British wooden windows has been engineered and used throughout history since it has been introduced to England in early 18th century and become classic additional peace to a perioud and a modern houses. Most of the English buildings preserved sash windows and thereis is a good reason why most of new builds and period properties still use them as iconic piece. If you are renovating a Georgian, Regency or Victorian house, it is must preserve it by repairing or replacing existing sash windows.

The word ‘sash’ is applies for a single frame for glazing. A traditional crafted with corded slide sash window is originally made up of two wooden sash pieces which slide up and down.
The sash window are often can be found in most of Georgian and Victorian time build properties, and the authentic traditional sash windows has three divided panes across by two up on each of two sash, which makes it a six panes on top of six panel window.

The term “sash windows” is used interchangeably with the term “box sash windows” in the United Kingdom, Acton, and frequently used to describe the same thing. Historically box sash windows are heavier and more stately in nature than modern sash windows, but both terms are used within the industry when referring to the same type of window.

Whilst late Victorian and Edwardian period building has standard timber sash window units hand crafted and it comes in various sizes.
When choosing sash windows for period properties ensure you get right type windows, as there were severe changes in style of sash windows over the years. Venetian box sash windows especially engineered with unique style and design which consist of central sliding sash with two fixed side panes attached.

Iconic Queen Anne Revival style is also widely used which is quite different than previous sash windows, which has several panes in the upper part of sash windows, and only one or two dividing in the lower sash.
Traditional engineered timber sash windows are most likely the ones that are widely used and installed in Conservation Area or a period listed building.