SKU: 74768181476

MAPEI Mapelastic CI Crack-Isolation Membrane – 1 Gallon

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Description

MAPEI Mapelastic CI Crack-Isolation Membrane – 1 GallonMapelastic CI Roller Applied Crack Isolation Membrane Premixed, liquid rubber membrane designed to isolate nonstructural in plane cracks under tile and stone. Quick drying and ready for polymer modified or epoxy mortars, it meets ANSI A118. 12 to help prevent cracks up to 1 8 inch from telegraphing through finishes. Key Features: Quick Drying Protection: Dries in about 3050 minutes for faster installs ANSI A118. 12 Compliant: Isolates in plane floor

Mapelastic CI Roller-Applied Crack-Isolation Membrane

Premixed, liquid-rubber membrane designed to isolate nonstructural in-plane cracks under tile and stone. Quick-drying and ready for polymer-modified or epoxy mortars, it meets ANSI A118.12 to help prevent cracks up to 1/8 inch from telegraphing through finishes.


Key Features:

  • Quick-Drying Protection: Dries in about 30–50 minutes for faster installs
  • ANSI A118.12 Compliant: Isolates in-plane floor cracks up to 1/8 in. (3 mm)
  • Ready-to-Use Formula: Premixed, liquid-rubber membrane rolls on easily
  • Versatile Application: For residential/commercial, interior/exterior under tile and stone
  • Compatible Adhesives: Accepts most MAPEI polymer-modified or epoxy mortars

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Product name Mapelastic CI
Format Premixed, liquid-rubber membrane
Application method Roller-applied
Dry time before setting About 30–50 minutes (when fully dry)
Standards Meets ANSI A118.12
Function Prevents nonstructural, in-plane floor cracks up to 1/8 in. (3 mm) from transferring through tile/stone
Use cases Under ceramic tile or stone; residential and commercial; interior and exterior
Compatible mortars Most MAPEI polymer-modified or epoxy mortars
Package shown 1 U.S. gallon (3.79 L)

Frequently Asked Questions (FAQ):

Q: What substrates and areas can I use Mapelastic CI on?
A: It is for residential and commercial interior or exterior installations under ceramic tile and stone to isolate nonstructural in-plane cracks.


Q: How long before I can set tile over the membrane?
A: Typically 30 to 50 minutes after application, once the membrane has fully dried.


Q: What crack movement does it handle?
A: It helps prevent nonstructural, in-plane cracks up to 1/8 inch (3 mm) from transferring through tile or stone.


Q: Do I need to mix it before use?
A: No. It is a premixed, ready-to-use liquid rubber applied with a roller.


Q: Which mortars are compatible?
A: Most MAPEI polymer-modified or epoxy mortars are suitable once the membrane is dry.


Sleek Surface Security for Statement Floors

When crafting a seamless, gallery-worthy floor, Mapelastic CI becomes your quiet hero—erasing the anxiety of hairline cracks beneath luxurious stone or porcelain. Its silky, roll-on application creates a discreet shield that preserves the elegance of your finish. Use it beneath large-format tile to keep lines crisp and uninterrupted. It’s a refined essential for achieving resilient, carefree luxury underfoot.


Protect your tile or stone investment—add Mapelastic CI to your prep and install with confidence today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 74768181476

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J
Verified Purchase
joe burke
West Palm Beach, US
★★★★★ 1
Poor quality. Very disappointing
Format: Hardcover, Format: Hardcover
The product said in good shape. This is not good shape. Product is damaged and held together by tape
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2022
L
LoneWolf18
Lake Worth, US
★★★★★ 4
Pretty funny
Format: Hardcover
The book gives us a more focused outlook on Chieg Wiggum. Full of its funny moments, I`d recomend this to huge Simpsons fans as it seems the shows writers managed to give us another hit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2014
I
Verified Purchase
I.T.
Draper, US
★★★★★ 3
Not the best, but not the worst either
Format: Hardcover
By any means not the funniest book in the series, only the one on Krusty the Clown was more un-funny; but still a worthy addition to your collection and, just like all the others from the series providing a retrospective of anecdotes you might have forgotten.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 22, 2012
P
Verified Purchase
Pen Name
Waukegan, US
★★★★★ 1
One Star
Format: Hardcover
The book I received had 3 pages cut out of it.
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Reviewed in the United States on August 17, 2014
G
Ghost Mutt
Draper, US
★★★★★ 2
Not that great
Huge "The Simpsons" fan. I watched all the episodes and read a lot of the comics and enjoy most. This one however was quite boring. Turns out I'm just not a big fan of Chief Wiggum. I really enjoyed The "Homer" and "Bart" book. But not this one. Maybe if you love Wiggum you'll love it. If you're not too fond of him then I wouldn't buy it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2013

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