DOORS & WINDOWS FOCUS


Framing your self-build


ecoaus Windows  oors’ Craig uff offers a comprehensive guide for self-builders and renovators on selecting the ideal windows and doors for your home.


© ecoHaus Windows & Doors


set the tone for the entire home. Among the most crucial choices and investment are the windows and doors – elements that signifi cantly impact energy effi ciency, comfort, aesthetics, and overall performance. With numerous options available, it can be challenging to decide what best fi ts the vision of your selfbuilt home. Understanding the various factors at play, such as U-values, material choices, glazing options and design, will help you make informed decisions to ensure both function and form are achieved.


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ENERGY EFFICIENCY & U-VALUES The energy performance of windows and doors is one of the most important considerations for self-builders, especially for those looking to meet specifi c energy standards. U-values measure the rate at which heat is lost through a material –


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hen starting your self-build project, the decisions made during the planning stages


lower U-values indicate better thermal insulation. For self-builders, achieving an excellent U-value is essential not only for comfort but also for reducing heating costs and environmental impact. If you are aiming for high energy


effi ciency, such as meeting Passivhaus standards, look for windows and doors with U-values that align with these stringent requirements. Passivhaus certifi cation demands very low heat loss, so triple-glazed units with U-values as low as 0.8 W/m²K may be necessary. For those looking at less stringent energy standards like EnerPit the retrofi tting standard for Passivhaus, slightly higher U-values may be acceptable, but energy effi ciency will still be a priority.


MATERIAL CONSIDERATIONS


The material of your windows and doors has a signifi cant impact on both performance and aesthetics. There are several options available, each offering different benefi ts.


GLAZING: DOUBLE OR TRIPLE?


When it comes to glazing, the choice between double and triple glazing will largely depend on your energy goals, location, and budget. Double glazing


Timber aluminium composite is a popular choice for its natural beauty and excellent insulation properties. It’s especially well-suited for traditional-style homes or those seeking to blend with natural surroundings. owever, it requires more maintenance compared to other materials, such as uPC or aluminium. All aluminium on the other hand,


offers sleek, modern aesthetics and is incredibly strong, which makes it ideal for large glazing areas. While it has higher thermal conductivity than uPC or timber, modern aluminium windows come with thermal break technology that helps to reduce heat loss. These can be a great option if you are looking to achieve a contemporary design with large, expansive windows.


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