ᐅ Should the joint between the terrace and the house wall be sealed with a flexible joint?

Created on: 9 May 2023 06:47
S
Schnigger
S
Schnigger
9 May 2023 06:47
Hello everyone,

The structure is as follows: lava aggregate layer, drainage concrete, tile adhesive, and 2cm (0.8 inch) porcelain stoneware tiles.
The terrace dimensions are approximately 7 x 4 meters (23 x 13 feet).
I got VDW 815 plus 2K grout for the joints.
Can I use this grout for the joint next to the house wall (which is doubly sealed with reactive waterproofing), or does it have to be sealed with an elastic joint compound?

Top view of a large gray terrace area with tiles, adjacent garden, and building materials.

Close-up of a gray wall on the left and gray floor tiles on the right with a narrow black joint

Close-up of a rough light beige wall on the left, narrow gap to a smooth dark surface on the right.