5118 Jet Black MAPEI Mapesil T Plus Silicone Caulk, 100% Silicone Sealant

Regular price $18.07

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Mapesil T Plus 5118 Jet Black Silicone Caulk

Professional-grade, 100% silicone sealant engineered for heavy-traffic and expansion/movement joints. Color-matched to MAPEI’s palette and formulated with enhanced adhesion for interior/exterior, wet or dry installations, including pools and spas.


Key Features:

  • Enhanced Adhesion: Designed for multiple substrates and heavy-traffic joint performance
  • 100% Silicone Formula: Interior/exterior, wet or dry use; Res 1–7 and Com 1–7 applications
  • Flexible & Durable: Excellent elongation for change-of-plane and joint applications in tile or stone
  • Mold/Mildew Resistance: Helps inhibit growth to keep joints cleaner
  • Pool & Spa Ready: Suitable after 7-day cure; withstands proper pH and chlorine levels

Specifications Table:

Specification Details
Product Name Mapesil T Plus
Type 100% silicone sealant
Color 5118 Jet Black (satin/shiny finish)
Use Cases Heavy-traffic and expansion/movement joints; interior/exterior; wet and dry installations
Applications Change-of-plane and joint applications in tile or stonework; pools and spas (after 7-day cure)
Performance Ratings Suitable from Res 1–7 and Com 1–7 (TCNA Environmental Exposure Classifications)
Features Enhanced adhesion; excellent elongation and flexibility; helps prevent mold and mildew; freeze/thaw-resistant after 72-hour cure at 73°F (23°C) and 50% RH

Frequently Asked Questions (FAQ):

Q: Is this safe for shower and wet-area use?
A: Yes, it’s 100% silicone and rated for wet installations; allow proper cure per directions.


Q: Can I use it in pools or spas?
A: Yes; allow 7 days of curing before filling and maintain pool water pH 6.5–7.6 with free chlorine under 5 ppm.


Q: Does it match MAPEI grout colors?
A: It is color-matched to MAPEI’s color palette to coordinate with grout joints.


Q: What finish does the Jet Black color have?
A: Jet Black has a more satin/shiny finish compared to the low-sheen standard.


Q: Is it suitable for movement joints?
A: Yes, it’s formulated for expansion/movement joints and heavy-traffic areas.


Sculpted Precision in a Sleek Jet Black Line

Mapesil T Plus in Jet Black draws a crisp, couture line that instantly sharpens tilework. The enhanced-adhesion silicone hugs edges with a refined, satin luster that feels tailored and modern. Pair it with white subway tile for graphic contrast or run it through large-format stone to frame the surface with sophistication. It’s a small detail that delivers a high-design, lasting finish.


Upgrade your tile installation with Mapesil T Plus 5118 Jet Black for a durable, designer-grade seal that lasts.

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