Waterproofing
The construction of balconies and terraces is not a science, but one must pay attention to the details.
The finished product needs to meet high structural and physical requirements when exposed to the elements. Any planning mistakes or faulty workmanship may have direct consequences and result in structural damage. The first planning step must always be a close look at the type of construction. The second question is what kind of materials should be used. Ceresit supports the planning and execution of your project with perfectly matched products: Our system covers the whole range of products resistance to frost, moisture, and high-temperature changes - from products for substrate preparation and waterproofing to matching tile adhesives and tile grouts.
Before making any decisions concerning the waterproofing and top covering, it is essential to test and assess the substrate type and condition. Water must be able to run off - it is, therefore, a key requirement to design outdoor living spaces with a long-term effective drainage system. Balconies and terraces must be planned with a minimum slope of 2%.
First install CL 152 tapes into the corners and overlaping gutter elements with balcony surface in fresh first layer. Tapes need to be installed in joints. CL 150 self adhesives tape alternatevilly can be used prior CR 166 instalation on dry surfaces. Always minimum two layer of mineral waterproofing must be done. Cruicial is correct mixing ratio of two components to achieve best performance. Minimum thickness of dried layers is 2 mm for CR 166. Protect freshly applied waterproofing from frost, direct sunlight and rain. Balcony/terrace waterproofing surface need to be covered by tiles fixed in traditional way with mortar or as a cantileverd type with special tiles on pedestals to protect waterproofing layer from direct walking traffic.
Ceramic tiles and natural stones are excellently suited for covering the floors of balconies and terraces. If expertly installed, they offer a long service life. For outdoor areas, the adhesive mortar must be applied in such a way as to ensure full surface wetting of the tile and slab underside (100 % adhesive coverage). If the tiles and slabs are not fully embedded in the adhesive, voids will form in which water can accumulate. The moisture trapped in the adhesive bed will eventually lead to various problems, ranging from efflorescence on the tile joints to frost damage and resulting tile delamination. Ceresit offers you proven tiling system products for use on balconies and terraces.
After mixing, the grout can be applied directly from the mixing container with a trowel. The grout is spread with a hard rubber float if used on walls and floors. Use the float to press the grout into the joints until filled void-free and flush with the tile surface. Afterward, excess grout is removed from the tile surface using the edge of the float held at a 90° angle. Stroke diagonally to remove as much grout as possible from the surface without pulling grout out the filled joints.
In order to obtain a uniform, aesthetic appearance and allow easy cleaning, the joints should be left to “mature” (or firm up) after grouting.
We are happy to support you with any questions regarding our products, where to buy, or what is the right solution for your project.
