When installing the iron window lintel, it is very important to leave a gap for the thickness of the insulation. Otherwise, the insulation of the lintel will not be made flush with the main surface of the facade, or it will be necessary to create an architectural element, protrusion.If you have chosen external insulation, the first step is to clean the surface of the lintel from dirt. Then you can degrease the metal and apply a primer with drying. For insulation, you can use foam, which is a more affordable option, or expanded polystyrene (extruded foam). The foam of the desired size is cut out and glue-foam is applied to its surface in strips with a small indentation from the edges. Then the insulation is pressed to the surface. If there are gaps between the insulation, they can be sealed with foam. If the foam or polystyrene foam will be plastered, it is also recommended to fix the insulation to the lintel with special dowels. After drying the adhesive foam, the excess is cut off, a painting grid is attached to the insulation, and then a plaster layer is applied.
This technology of insulation of the window lintel will provide reliable and effective thermal insulation of your home.