Choosing Window Frames: 3 Materials Compared

 

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Windows frames are typically made out of one of these three materials: uPVC, aluminium or timber. Each material has its pros and cons. It’s important to weigh up these pros and cons when choosing window frames. Below are the three materials compared.

uPVC

The most popular option in the UK is uPVC windows. uPVC stands for unplasticized polyvinylchloride. It is a plastic (the ‘unplasticized’ part simply refers to its rigidity) and is typically white in colour. Such windows are sometimes referred to as vinyl windows.

The popularity of uPVC windows comes largely down to affordability - these frames are often much cheaper than aluminium and timber. However, uPVC also has many properties that make it a good practical choice. On top of being a great insulator, uPVC is very low maintenance compared to aluminium and timber.

uPVC windows won’t last as long as aluminium or timber windows, and they won’t have the same impact on your property’s value either. These frames also have to be made very thick to match the robustness of aluminium or timber, which often means more frame and less glass.

Aluminium

Various metals can be used to construct window frames, however aluminium is the most common choice. These frames are typically powder coated to provide corrosion protection while also allowing application of various different colours. 

Aluminium windows are very secure while being very slim and light. They are likely to withstand a vicious storm better than timber or uPVC, while also keeping burglars out. They are also a good environmental choice as they are often built from recycled aluminium and can be recycled again after use.

Compared to timber and uPVC, aluminium is not as efficient an insulator. If an insulation coating is not added, these frames will cause your home to lose heat quickly in the winter. Fortunately, most aluminium windows come with this insulation coating, but even with this coating these often still no match for timber or uPVC.

Timber

Timber is the most traditional material for window frames. Most timber window frames are made from softwoods such as yew, pine, fir or cedar. Such frames can be painted or left unpainted to provide a rustic timber texture. 

When properly looked after, timber windows can last centuries (in comparison, aluminium windows will rarely last longer than 45 years, while uPVC windows often don’t last longer than 35 years). Timber windows are also likely to add the most value to a home. On top of this, they are great insulators, helping to save you money on your energy bills.

They are unfortunately the most expensive option, which is why many people avoid them. While softwoods are cheaper to use than hardwoods, such frames are still a bigger investment than uPVC or aluminium. Timber windows also require a lot of maintenance to keep them from decaying, which can put some people off. You should ideally apply a new finish every year if you want your timber windows to last for many years to come.