
At TWJ Sash, we understand the importance that windows, including casement windows and handcrafted windows, bring to the aesthetics of a property. Not only do they enhance the overall look, but they are also integral to the energy efficiency of your home, providing the correct ventilation to help maintain and preserve your property for generations to come.
With over 20 years of experience in not only windows but also the building industry, we have the expertise to guide you through all available options. This enables you to choose the right type of window for your property, whether it's timber windows or another style, as well as the correct materials and finishes to meet your needs and those of the property itself.

When it comes to period properties, we understand the significance of maintaining the original proportions of traditional windows, including casement windows. Many period properties are often listed buildings or located within conservation areas. Our extensive knowledge and experience with these types of properties enable us to advise on all aspects of your project. From collaborating with our trusted architects to support the design and submission of planning applications, to recommending the right materials and specifications for the manufacturing and installation of your handcrafted windows and timber windows, we are here to help.
At TWJ Sash, we understand the importance that windows, including casement windows and handcrafted windows, bring to the aesthetics of a property. Not only do they enhance the overall look, but they are also integral to the energy efficiency of your home, providing the correct ventilation to help maintain and preserve your property for generations to come.
With over 20 years of experience in not only windows but also the building industry, we have the expertise to guide you through all available options. This enables you to choose the right type of window for your property, whether it's timber windows or another style, as well as the correct materials and finishes to meet your needs and those of the property itself.
When it comes to period properties, we understand the significance of maintaining the original proportions of traditional windows, including casement windows. Many period properties are often listed buildings or located within conservation areas. Our extensive knowledge and experience with these types of properties enable us to advise on all aspects of your project. From collaborating with our trusted architects to support the design and submission of planning applications, to recommending the right materials and specifications for the manufacturing and installation of your handcrafted windows and timber windows, we are here to help.
At TWJ Sash, we understand the importance that windows, including casement windows and handcrafted windows, bring to the aesthetics of a property. Not only do they enhance the overall look, but they are also integral to the energy efficiency of your home, providing the correct ventilation to help maintain and preserve your property for generations to come.
With over 20 years of experience in not only windows but also the building industry, we have the expertise to guide you through all available options. This enables you to choose the right type of window for your property, whether it's timber windows or another style, as well as the correct materials and finishes to meet your needs and those of the property itself.
When it comes to period properties, we understand the significance of maintaining the original proportions of traditional windows, including casement windows. Many period properties are often listed buildings or located within conservation areas. Our extensive knowledge and experience with these types of properties enable us to advise on all aspects of your project. From collaborating with our trusted architects to support the design and submission of planning applications, to recommending the right materials and specifications for the manufacturing and installation of your handcrafted windows and timber windows, we are here to help.

At TWJ Sash, we understand the importance that windows, including casement windows and handcrafted windows, bring to the aesthetics of a property. Not only do they enhance the overall look, but they are also integral to the energy efficiency of your home, providing the correct ventilation to help maintain and preserve your property for generations to come.
With over 20 years of experience in not only windows but also the building industry, we have the expertise to guide you through all available options. This enables you to choose the right type of window for your property, whether it's timber windows or another style, as well as the correct materials and finishes to meet your needs and those of the property itself.
One of the most important aspects when producing timber windows, including our handcrafted windows, is choosing the correct way of sealing or finishing the wood to ensure preservation and prolong the lifetime of the window.
At TWJ Sash, we use a microporous paint created by Teknos UK, which offers a substantial range of colours to match any of the major paint supplier's colour charts. They also provide a wide range of translucent finishes and wood stains if you are looking for a more natural timber finish.
We apply these finishes using a spray system in our in-house finishing department, which creates a smooth result and a longer lasting, low maintenance finish. When used alongside Accoya timber, we offer a 10-year guarantee against the need for repainting your casement windows.


At TWJ Sash, we understand the importance that windows, including casement windows and handcrafted windows, bring to the aesthetics of a property. Not only do they enhance the overall look, but they are also integral to the energy efficiency of your home, providing the correct ventilation to help maintain and preserve your property for generations to come.
With over 20 years of experience in not only windows but also the building industry, we have the expertise to guide you through all available options. This enables you to choose the right type of window for your property, whether it's timber windows or another style, as well as the correct materials and finishes to meet your needs and those of the property itself.
At TWJ Sash, we understand the importance that windows, including casement windows and handcrafted windows, bring to the aesthetics of a property. Not only do they enhance the overall look, but they are also integral to the energy efficiency of your home, providing the correct ventilation to help maintain and preserve your property for generations to come.
With over 20 years of experience in not only windows but also the building industry, we have the expertise to guide you through all available options. This enables you to choose the right type of window for your property, whether it's timber windows or another style, as well as the correct materials and finishes to meet your needs and those of the property itself.
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Unit 9, Bridge Road Ind. Est., Bridge Road, Kingswood, Bristol, BS15 4TA.