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When it comes to sash windows, selecting the right wood is crucial for achieving a perfect balance between durability, insulation and visual appeal. Each type of wood brings its unique properties to the table, making it essential to choose the one that best aligns with your needs and the character of your property. Here, we explore the most popular types of wood used in sash windows and what makes each of them a excellent choice.
Accoya has revolutionised the sash window industry with its exceptional durability and sustainability. This wood undergoes a process called acetylation, modifying it at a cellular level to make it incredibly resistant to moisture, decay, and insect damage. Known for its stability and extremely long lifespan, Accoya does not swell or shrink with changes in weather, which ensures that sash windows maintain a snug fit all year round. Accoya is mostly ideal for homes looking for a sustainable and long lasting solution without compromising on classic aesthetics. With a lifespan of over 50 years above ground and around 25 years in water or ground contact, Accoya however is the most expensive choice, but it is an investment in quality and longevity.
Oak has long been a favourite in all forms of traditional carpentry, it is valued for its strength and attractive grain patterns, and has a long history of use in the UK. European oak offers a hard and dense structure that can withstand years of exposure. Its natural tannins make it resistant to fungal attacks, and with the right treatment, oak can be very weather resistant which makes it an excellent choice for exterior sash windows. Oak is often chosen for period properties or heritage restoration projects due to its authenticity and traditional look. With proper maintenance, oak sash windows can last well over 100 years, embodying its timeless durability.
Douglas Fir is an excellent choice for sash windows because it is both lightweight and stable. This versatile wood has a fine, straight grain that absorbs stains and paint very well, this makes it very adaptable for various styles. Douglas Fir is fairly resistant to decay and known for its dimensional stability, which also helps prevent warping over time. It is an ideal option for homes seeking a cost effective wood with excellent structural stability. With regular maintenance Douglas Fir sash windows can last typically between 50 and 60 years, making it a reliable, affordable and enduring choice.
Mahogany brings a rich colour and fine grain that suits high end and historic properties. Known for its stability and durability, this hardwood is naturally resistant to rot and insects, making it suitable for exterior sash windows that need to withstand the various British weather conditions. The luxurious reddish brown hue of mahogany also adds an element of sophistication to sash windows. Mahogany is especially well suited for premium windows in classic or luxury properties. With proper treatment and care, mahogany windows can last over 80 years, blending luxury with longevity.
Redwood, also known as Scots Pine, is widely used in sash windows, particularly for softwood sash frames. It is lightweight, relatively affordable, and provides great insulating properties. When properly treated, redwood can last many years and works well in both traditional and modern settings. It is an economical option that still offers excellent durability, with a lifespan of around 40 to 50 years, making it ideal for properties that need an affordable yet resilient wood.
Teak is a premium wood known for its incredible durability and natural resistance to weathering, this is even without any additional treatment to the wood. Teak is often used in high end sash windows, it resists moisture, decay, and termites thanks to its natural oils, which help maintain its integrity over time. This makes teak ideal for properties near the sea or in harsher British climates. Teak is an excellent choice for premium properties, coastal areas, or for homes that prefer a low maintenance option. With care, teak can last over 100 years, especially in dry conditions, making it a truly long term investment.
Meranti is a tropical hardwood commonly used in sash windows due to its affordable price and good durability. Although Meranti it isn’t as long lasting as other hardwoods like teak or oak, Meranti has a smooth, even grain and is relatively easy to work with, making it a popular choice for sash window frames that require painting. Meranti is an attractive option for sash windows with a painted finish in homes looking for hardwood without the high costs of other options. With proper maintenance, Meranti windows typically last between 30 and 40 years.
Choosing the best wood for your sash windows depends on your budget, desired aesthetics, and the specific needs of your property, such as location and any heritage requirements. For period homes or properties with specific conservation needs, hardwoods like oak or mahogany offer historical authenticity and impressive longevity. Meanwhile, for environmentally conscious homes, Accoya provides unmatched sustainability alongside durability. Whichever wood you choose, investing in quality materials not only enhances the beauty of your sash windows but also ensures their functionality and resilience for decades to come. Our team specialises in advising on the best wood options for sash windows, ensuring a perfect match for both style and substance in any restoration or new installation project.