5228 Cavern Moss Mapesil T Plus Silicone Caulk

Regular price $19.79

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Mapesil T Plus 100% Silicone Caulk – Cavern Moss (5228)

Professional-grade, 100% silicone sealant engineered for heavy-traffic and expansion/movement joints. Color-matched to MAPEI’s grout palette with a low-sheen finish, it offers excellent flexibility, mold/mildew resistance, and suitability for interior/exterior, wet or dry installations.


Key Features:

  • Heavy-Duty Performance: Rated for heavy-traffic and expansion/movement joints, exceeding ASTM and ANSI standards
  • Flexible 100% Silicone: Excellent elongation for change-of-plane and joint applications in tile and stone
  • Moisture and Mold Resistant: Ideal for wet areas; helps prevent mold and mildew
  • Indoor/Outdoor Versatility: For interior and exterior use; freeze/thaw resistant after proper cure
  • Pool & Spa Approved: Usable in pools/spas after 7-day cure with proper water chemistry

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Product Name Mapesil T Plus
Composition 100% silicone sealant
Use Cases Heavy-traffic and expansion/movement joints; change-of-plane and joint applications in tile or stonework
Color Match Color-matched to MAPEI’s color palette
Finish Low sheen to match grout joints (Jet Black more satin/shiny)
Installation Areas Interior and exterior; wet and dry installations (Res 1–7, Com 1–7 per TCNA)
Mold/Mildew Resistance Helps prevent mold and mildew
Pool/Spa Use Usable after 7 days cure; pH 6.5–7.6; free chlorine < 5 ppm
Freeze/Thaw Resistance Resistant after 72-hour cure at 73°F (23°C) and 50% RH
Standards Exceeds ASTM and ANSI standards for heavy traffic and movement joints

Frequently Asked Questions (FAQ):

Q: Is this caulk paintable?
A: No. As a 100% silicone sealant, it is not paintable.


Q: Can I use it in showers or submerged areas?
A: Yes. It’s suitable for wet installations and can be used in pools and spas after a 7-day cure with proper pH and chlorine levels.


Q: What surfaces can it adhere to?
A: Formulated for multiple substrates in tile and stone installations, including change-of-plane and movement joints.


Q: Does it match MAPEI grout colors?
A: Yes. It is color-matched to MAPEI’s color palette and designed with a low-sheen finish to blend with grout joints.


Q: Is it suitable for exterior use in cold climates?
A: Yes. After a 72-hour cure at 73°F and 50% RH, it is freeze/thaw resistant.


Seamless, Color-True Lines for Sophisticated Surfaces

Mapesil T Plus draws the eye with its refined, low-sheen finish that mirrors the elegance of well-laid grout. Its 100% silicone body flexes gracefully through movement, preserving crisp lines at every intersection. Pair the Cavern Moss hue with warm stone or matte porcelain to create a tailored, architectural frame around your surfaces. It’s the quiet luxury essential that keeps your space looking impeccably finished.


Complete your tile installation with Mapesil T Plus—durable, color-true silicone that seals beautifully and lasts.

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