Mapei Universal Silicone Sealant, Suitable for Flexible Sealing of Building Joints Indoors and Outdoors - Z Plus White

It bonds to a wide range of substrates including ceramic and porcelain tiles, bricks, concrete, stone, metal, wood, and other common building materials. It is formulated for strong adhesion on both interior and exterior surfaces.

Key features include white color for a clean finish, high adhesion, long-lasting flexibility, and resistance to water, dirt, and UV exposure. It is designed to resist cracking and peeling and to inhibit mold and mildew growth in damp environments.

Use it to seal joints around tiled walls and floors in bathrooms and kitchens, between countertops and splashbacks, around showers and swimming pool areas, as well as exterior joints in patios, decks, and façades where a flexible, durable seal is needed.

Prepare the joint by removing old sealant and cleaning the joint. Mask the area with painter’s tape. Cut the nozzle to the desired bead size and load the sealant into a caulking gun. Apply steadily along the joint, then tool the sealant with a damp finger or a flexible finishing tool to achieve a smooth, even finish. Remove tape while the sealant is still wet.

A skin forms in roughly 20–30 minutes depending on temperature and humidity, with full cure typically achieving hardness and sealing strength within 24–48 hours. Avoid heavy use or soaking until fully cured for best results.

No, silicone sealants like Mapesil Z Plus Bianco are generally not paintable after curing. For a painted look, you’d need to install a paintable sealant or cover with a painting solution designed for silicone-approved surfaces.

Ensure the joint is clean, dry, and free of dust, oils, and residues. Use a backing material for deep joints and select an appropriate bead size. For most joints, a width roughly 5–12 mm works well, but follow project guidelines for larger joints.

Uncured sealant can be cleaned with appropriate solvent or mineral spirit per product guidance; cured silicone is typically removed mechanically. Use protective gloves and ensure good ventilation when handling solvents.

Mapesil Z Plus Bianco offers a white color option with the same high-adhesion, flexible silicone performance as Mapesil Z Plus Grigio, but in a white finish to suit light-colored interiors or specific design needs. If you prefer a different color, Mapesil Z Plus Grigio is the gray variant with similar technical performance. See also Mapesil Z for standard silicone performance differences. Product pages: Mapesil Z Plus Bianco (https://fepy.com/product/mapesil-z-plus-bianco), Mapesil Z Plus Grigio (https://fepy.com/product/mapesil-z-plus-grigio), Mapesil Z (https://fepy.com/product/mapesil-z).

If you’re comparing options, you might also look at Mapesil Z Plus Grigio for a gray color option and Mapesil Z for a standard silicone option. These are available on Fepy at the following product pages: Mapesil Z Plus Grigio - https://fepy.com/product/mapesil-z-plus-grigio; Mapesil Z - https://fepy.com/product/mapesil-z.

You can purchase Mapesil Z Plus Bianco directly on Fepy at https://fepy.com/product/mapesil-z-plus-bianco. Consider color (Bianco for white joints), surface compatibility, indoor vs outdoor use, and whether you need the extra adhesion and UV resistance offered by the Z Plus formulation for your project.