Abstract: In the method for sealing of replacement windows, a sealing tape with a first layer of flexible foam and a second layer of stiff material, which are bonded to each other, is used. The sealing tape is inserted with the second layer facing forward into a channel-shaped recess in the masonry, which is bounded by a bottom and two side walls and comprises an open access section, wherein the first layer of the sealing tape is at least partially compressed when in the inserted state. The second layer of the sealing tape is clamped against the side walls of the recess at a predetermined distance from the open access section. After the window frame has been placed opposite the open access section of the recess, the first layer of the sealing tape expands until it rests against the window frame.

Abstract: The sealing tape for sealing a joint has a first foam strip and a second foam strip of a flexible foam capable of recovery after compression, the first and second foam strips arranged next to each other in a functional direction of the sealing tape. A sheet-type strip serving to reduce a permeability of the sealing tape to diffusion of water vapor in the functional direction is arranged between the first foam strip and the second foam strip and has a section arranged in the shape of a U or V, wherein a first limb and a second limb of this section extend toward the top of the sealing tape.

Abstract: In the method for sealing of replacement windows a sealing tape with a first layer of flexible foam and a second layer of stiff material is inserted into a channel-shaped recess in masonry so that the first layer of the sealing tape is oriented toward the bottom of the recess and is at least partially compressed. The expansion of the first layer is temporarily limited by clamping the second layer directly or indirectly against the side walls of the recess, or by use of retaining elements, which exert a retaining function on the second layer. A window frame is installed in an area of the recess during the temporary limitation of the expansion of the first layer of the sealing tape, whereupon the first layer expands further or is allowed to expand further until the sealing tape rests against the window frame.