ECB® 50 Anti-Fracture Membrane

National Applied Construction Products

  • 20900
  • Save $ 4000

Features and Benefits

• Suitable for interior and exterior use

• Meets ANSI A118.12 and ANSI A118.10

• Protects against reflective cracking and


• IIC: 65 per ASTM E492-04

• STC: 67 per ASTM E90-04

• Safely covers asbestos flooring and provides

   an effective barrier against radon and mold

• Resists Moisture Vapor (MVT)

   10#/1000SF/24HRS when used with NAC

   TAC or NS97 Primer or 7#/1000SF/24HRS

   when used with NAC TAC II Primer

• Eliminates need to cut tile to meet

   control/cold joints

• No need to remove old floors or recess

   new ones

• Can be used for thin-bed and medium-bed


• Self-bonding and self-healing formula

• Tile can be installed the same day as


• Works with radiant-heated floors and tile

   warming systems


Provides crack isolation up to 1/4".  ECB 50 is perfect for residential and commercial applications. 


How It Works


ECB® 50 is a self-bonding, sheet applied elastomeric membrane and is designed for use under floor surfaces that require protection from structural movement.


ECB® 50 consists of a base layer of polymer modified elastomers, permanently laminated to a unique "stress flex" fiber sheet. Together they form a single 40 mil (1/16") thick, high strength self-bonding membrane that is easily applied. The elastomeric base functions as a buffer, absorbing the thermal and lateral structural movement of the sub-floor (up to 1/4"), while the "stress flex" fiber sheet creates a new flooring surface which will accommodate most ANSI A118.4 mortars, organic adhesives and epoxy setting materials.  ECB® 50 adheres permanently to the substrate, remains flexible and will last the life of the flooring surface.



Use ECB® 50 membrane OVER:


Concrete: Poured, pre-stressed and pre-cast concrete, concrete backerboard, mud beds, gypsum, lightweight concrete and patching compounds. 

Wood: Exterior or exposure 1 plywood, APA-rated sheathing, Sturd-I-Floor, hardwood, tongue and groove and OSB with standard face. (Gap between sheeting as required.) 

Other Substrates: Ceramic and porcelain tile, stone, terrazzo, VCT/VAT, metal, painted and sealed floors and floors damaged by dry shrinkage and structural movement. 


Use ECB® 50 UNDER:


Thin & medium-bed mortar installations (ANSI A118.4) of ceramic, porcelain, stone, marble, slate, granite tile, pavers, brick, hardwood, manufactured wood, commercial grade vinyl and other finished floors; check with flooring manufacturer.


Ideal for use with radiant heated floors and low voltage tile warming systems.



ECB® 50 is available in 3' x 50' (150 sf) rolls.

We Also Recommend