Raamruum

Raamruum is a term used in Estonian architecture and construction to denote the space defined by a window frame that is available for glazing and hardware. The word combines raam, meaning frame or window, with ruum, meaning space. In practice, raamruum describes the interior spatial envelope within which the window components are installed, including the sash cavity and glazing bead area. It is distinct from the rough opening, which refers to the larger structural opening in the wall before the window is fitted.

In architectural drawings and specifications, raamruum is used to determine the glazing area, insulation needs, and the placement of fittings. Tolerances for installation take into account the thickness of the frame and any interior cladding, ensuring proper fit and performance. The concept helps engineers and designers plan for airtightness, thermal performance, and weather sealing around the window assembly.

Raamruum varies with window type and construction method, including casement, sash, and fixed units, as well as material choices such as timber, PVC, or aluminum. It informs decisions about insulation, visible light area, and hardware layout, and it plays a role in cost estimation and scheduling in building projects. While primarily used in Estonian practice, similar concepts exist under different terms in other languages, reflecting the shared architectural need to define the effective interior space of a window installation.