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Many owners of self-built houses choose sand-in-water coating for exterior decoration, attracted by its combination of stone-like texture and durability. However, to ensure the sand-in-water coating exterior truly stands the test of time, three key details—external corner strips, drip edges, and wainscots—must not be overlooked. They are the core to guaranteeing the exterior’s aesthetics and stability. Limeijia, a source manufacturer of stone-like coatings, will provide an in-depth analysis of their technical key points and practical value for you.

1. External Corner Strips: The "Stable Foundation" for Vertical and Flat Walls

External corner strips are designed to protect the 90° convex corners of walls, commonly used at raised parts such as door and window openings and columns. The root cause of cracked or uneven corners in many self-built houses is the absence or incorrect installation of external corner strips. They can accurately control the thickness of the plaster layer, preventing shrinkage and cracking caused by overly thick coatings. At the same time, they resist daily impacts, keeping the corner lines straight and neat. For construction workers, external corner strips also reduce operational difficulty, ensuring smooth and regular edges. This directly enhances the overall decoration quality and extends the coating’s service life, making them a "protective tool" with high cost-effectiveness.

2. Drip Edges: The "Precise Defense Line" Against Rainwater Infiltration

Drip edges are installed at the lower edges of windowsills, canopies, balconies, and other areas. Their core function is to guide rainwater to drip off, preventing water from seeping along the wall. Many owners cannot distinguish between upper eave and lower eave drip edges, but their roles are clearly divided. Upper eave drip edges (in a beak-like shape) are installed above windowsills and at the cornices of parapet walls, focusing on blocking rainwater from seeping into the interior. Lower eave drip edges (grooved or raised lines) are installed at cornices and below beams, responsible for diverting rainwater to the outside of the wall to prevent exterior erosion. During construction, it is important to ensure firm sealing and straight lines; otherwise, even the most exquisite exterior wall will be "ruined" by water seepage.

3. Wainscots: The "Solid Shield" for Protecting Building Bases

Wainscots refer to the plinth part at the lower section of the wall, close to the ground. This area is most vulnerable to rainwater immersion, collision wear, and groundwater erosion. Without protection, it can lead to wall weathering and peeling, as well as dampness and dust falling on the interior walls. The role of wainscots goes far beyond "decoration": their moisture-proof performance can handle moisture intrusion in rainy and humid areas; their easy-to-clean nature keeps corners free from stains; their sturdy material can resist daily collisions. Additionally, through material matching such as ceramic tiles and cultural stones, they can add a sense of layering to the building. Choosing the right wainscot based on the style and budget of the self-built house not only protects the wall but also enhances the overall appearance.

The aesthetics and durability of a sand-in-water coating exterior always lie in the details. External corner strips ensure flatness, drip edges prevent water seepage, and wainscots protect the foundation—none of them can be missing. Mastering these three key points not only avoids the trouble and cost of later maintenance but also allows the exterior wall of the self-built house to withstand wind and rain, maintaining a delicate texture for a long time. Renovating a self-built house is not easy; only by controlling the construction details can every investment be truly worthwhile!

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