Installation on mounting nails

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Using a 1 mm drill, drill holes at a distance of 15-20 cm from each other in the end of the extension strip, which will then be adjacent to the frame; the depth of the holes should be 0.3 - 0.5 cm less than the length of the nail. Insert finishing nails into the drilled holes until they stop, with the sharp end facing outward. If non-finishing nails are used, the heads must be cut off.

The parts of the extension are individually strung with the bahamas mobile database of the nails onto the door frame. The nails are driven into the frame using a rubber hammer or a regular metal hammer through a wooden spacer. Precise measurements and careful actions minimize the possibility of gaps or cracks, which can be eliminated by disassembling and reinstalling the extensions or using wood plaster in the same tone. Such corrections worsen the aesthetically pleasing appearance of the extension and indicate amateurishness of the installer.

The extension structure fixed with finishing nails is reinforced with strips of masking tape, cleaned of possible dirt, dust and slightly moistened. After that, foaming begins. The extensions are not heavy, so the most budget mounting foam is suitable for installation. After the foam has completely dried, its protruding parts are cut off and you can begin installing the trims. Step-by-step instructions on how to install extensions on an interior door can be found in the video below.

Finishing nails securely press the extension board to the door frame, but do not prevent it from being torn out, which is a significant drawback of this method of installing the extension.

Installation using self-tapping screws
A hidden hole is cut from the end face of the strip using a wood drill. The drill diameter should be at least 1-2 mm less than the thickness of the extension strip and also correspond to the size of the screw head. The length of the screws is selected so that when drilling, they enter the door frame by 2-3 turns. A greater number of turns can cause a crack and chip in the frame.

The hole is drilled at a distance of 1-2 mm from the front side of the extension, drilling through the back side of the strip is allowed. It is recommended to hold the drill at a slight angle when working to eliminate the possibility of drilling through the front side of the extension. A sufficient number of screws for fixing the side part of the extension is 4 pieces, so 4 holes are pre-drilled for them.