Are steel windows suitable for renovating an older building? Yord offers the W20 system, which draws inspiration from British window designs used in the early 20th century. This system is suitable for renovating older properties, as well as for lofts and interior glass partitions. Systems W50 TB and W75 TB are available for more contemporary projects. When making a choice, it is worth considering the building type, glazing size, and insulation requirements.