When you want to preserve the historical integrity of heritage properties, choosing the right window bars is crucial. Understanding the differences between astragal bars and plant-on bars helps you make an informed decision. At Gowercroft Joinery, we combine traditional aesthetics with modern engineering to maintain both the look and efficiency of your windows.
Original Georgian bars in historic windows divide the glass into smaller panes and are an integral part of the window frame. These bars are essential for maintaining the traditional appearance of heritage properties.
Astragal bars in replacement historic windows replicate the look of original Georgian bars. These slim strips of wood or metal sit on the surface of a glass pane to make it look like the window is divided into smaller panes. For double or triple-glazed windows, additional bars between the panes enhance this effect. Today, astragal bars help historic buildings retain their old-fashioned look while updating windows for modern performance.
Plant-on astragal bars attach directly to the glass surface, replicating the look of individual panes within a larger sheet of glass. Unlike traditional astragal bars, you apply plant-on bars after manufacturing.
Plant-on astragal bars have gained popularity for several reasons:
Despite their benefits, plant-on astragal bars often encounter issues:
Gowercroft Joinery has developed Integrated Conservation Bars to address these issues. Our bars are part of a mechanically fixed grid to the frame, ensuring durability and stability. The pre-painted grid reduces reflections and maintains an authentic look consistent with heritage properties.
One notable project is at Newton Park Farm, an 1840s model farm in South Derbyshire. This Grade II listed property was the first in the region to have vacuum glazed windows approved, blending heritage conservation with modern technology.
Ben, the homeowner, shared: “This was the first time that vacuum glazing/our Heritage range was approved for Grade II listed in South Derbyshire—setting a precedent for the rest of the planning authority. They were initially nervous about the glazing bars, but you developed a different system.” This innovation helped secure planning approval, showcasing Gowercroft Joinery’s ability to meet stringent conservation standards while enhancing the property’s historical character.
Our Heritage Range offers advantages for listed buildings and conservation areas:
To discuss your specific requirements and see our craftsmanship firsthand, please contact us to arrange a visit to our factory. We look forward to helping you find the perfect solution for your heritage property.