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Manufacturers of quality rooflights, skylights, roof lanterns, roof windows and patent glazing bars. Lonsdale are specialist manufacturers of high quality roof light and patent glazing systems suitable for domestic conservatories, orangeries, glass rooms and commercial canopies, walkways and large area overhead glazing. Our range includes fixed, opening and walk-on glass rooflights, roof lanterns, glazing bars and bespoke rooflights to any shape and size.
All our overhead glazing systems are available supply only or via our national network of registered rooflight installers. We offer prompt delivery countrywide and all our roof glazing systems are designed and manufactured to the highest standards for maximum safety, durability and strength.
Manufacturers of quality rooflights, skylights, roof lanterns, roof windows and patent glazing bars. Lonsdale are specialist manufacturers of high quality roof light and patent glazing systems suitable for domestic conservatories, orangeries, glass rooms and commercial canopies, walkways and large area overhead glazing. Our range includes fixed, opening and walk-on glass rooflights, roof lanterns, glazing bars and bespoke rooflights to any shape and size.
All our overhead glazing systems are available supply only or via our national network of registered rooflight installers. We offer prompt delivery countrywide and all our roof glazing systems are designed and manufactured to the highest standards for maximum safety, durability and strength.
Services
Lonsdale provides you with concise and reliable information to help designing and specifying glass roofs that bit easier.
Follow our guidance and you can be sure your projects will feature safe and weather-tight roof glazing that will give many years good service.
Please take a look at the Design & Regulations pages on the website which are likely to answer any queries you may have.
However, if you can't find what you need, please contact our Technical Department where our experienced and helpful team can offer you further advice.
Follow our guidance and you can be sure your projects will feature safe and weather-tight roof glazing that will give many years good service.
Please take a look at the Design & Regulations pages on the website which are likely to answer any queries you may have.
However, if you can't find what you need, please contact our Technical Department where our experienced and helpful team can offer you further advice.
We offer stock lengths or a design and fabrication service with all materials, pre-drilled, cut to size complete with all necessary fittings and fasteners ready for immediate installation.
Thermally broken aluminium sloped glazing system suitable for commercial, public and domestic buildings.
Designed to conform with the requirements of BS5516 2004 Parts 1 & 2 for the design & installation of sloping and vertical patent glazing when installed within the manufacturers recommendations.
Thermally broken aluminium sloped glazing system suitable for commercial, public and domestic buildings.
Designed to conform with the requirements of BS5516 2004 Parts 1 & 2 for the design & installation of sloping and vertical patent glazing when installed within the manufacturers recommendations.
Welcome to Lonsdale Patent Glazing and Rooflights, precision manufacturers of contemporary and traditional sloped glazing systems for commercial and domestic buildings.
We offer a wide range of aluminium systems for glass roofs for small and large projects.
From major stations, museums, shopping centres, schools and universities to modest domestic extensions and bespoke projects, we have the right skylight at the right price.
Patent glazing has developed over the years and is no longer only suitable for unheated spaces such as stations, markets and covered ways as modern systems provide excellent thermal insulation and air-tightness when used with double or triple glazing.
We offer a wide range of aluminium systems for glass roofs for small and large projects.
From major stations, museums, shopping centres, schools and universities to modest domestic extensions and bespoke projects, we have the right skylight at the right price.
Patent glazing has developed over the years and is no longer only suitable for unheated spaces such as stations, markets and covered ways as modern systems provide excellent thermal insulation and air-tightness when used with double or triple glazing.
At Lonsdale, we specialise in bespoke rooflights and have provided overhead glazing systems for many important and historic buildings.
Toughened or laminated safety glasses MUST be specified for overhead glazing.
Toughened glass is heat treated so that when broken it shatters into tiny small dice that even if they fall are so small they are unlikely to cause injury.
However, it does make less mess and should not be fitted over swimming pools or food preparation areas as can be very difficult to ensure recovery of every fragment.
Toughened or laminated safety glasses MUST be specified for overhead glazing.
Toughened glass is heat treated so that when broken it shatters into tiny small dice that even if they fall are so small they are unlikely to cause injury.
However, it does make less mess and should not be fitted over swimming pools or food preparation areas as can be very difficult to ensure recovery of every fragment.
Glass roofs come in many shapes and forms from a small flat rooflight on a typical home extension to a large roof glazing structure on a major shopping centre or train station.
A rebated timber rafter is the most basic of methods where the glass is usually seated on a glazing tape and then a continuous wooden capping with mastic tapes clamps the glass in place and keeps the water out.
This used to be a popular method in Victorian times and still sometimes see today even on high-end timber conservatories, but it is not a satisfactory method and leaks often occur due to movement in the timber.
A rebated timber rafter is the most basic of methods where the glass is usually seated on a glazing tape and then a continuous wooden capping with mastic tapes clamps the glass in place and keeps the water out.
This used to be a popular method in Victorian times and still sometimes see today even on high-end timber conservatories, but it is not a satisfactory method and leaks often occur due to movement in the timber.
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