Tue
Oct 27
2015

Dural Durabase CI Plus Ceramic Tile Underlayment 323 SF Roll

Dural Durabase CI Plus Ceramic Tile Underlayment 323 SF Roll
  • Crack Isolation Underlayment
  • Secure bonding for ceramic tile and natural stone
  • 39.5 inches wide
  • 323 square foot roll
  • German Product

Dural Durabase CI Plus Ceramic Tile Underlayment

The New and Improved Crack-Isolation Underlayment

Now with Even Better Performance!

Durabase CIver2 img

Replace the need for cement board. This durable, lightweight product is elastic, rot proof and resistant to aggressive substances. Durabase-CI Plus provides a decoupling layer while supporting tremendous loads.

39.5 inch wide product.

Allows independent movement between the sub floor and the finished surface.

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Unlike other products like Ditra, the Dural Durabase-CI Plus design utilizes round cavities to provide more strength and to help prevent the trowel from catching on the underlayment during installation. A unique open-mesh fabric adhered to top of Durabase-CI Plus provides even more secure bonding of the tile surface to this underlayment.

  • Protects the sub floor from moisture penetration.
  • Replaces second layer of plywood for ceramic tile installation.
  • Exclusively designed for ceramic tile surfaces.
  • Eliminate the primary cause of cracking by negating stress between sub floor and tile surface.
  • Waterproofs and allows moisture in the substrate to evaporate.
Click for Installation Guide

Apply over single layer 5/8" plywood or OSB, with 16" on-center joist spacing, with tongue-and-groove plywood. (Can also use on 3/4" plywood/OSB with 19.2" on-center joist spacing or 1-3/8" substrate for 24" on-center joist spacing.)

For natural stone floor coverings, use a double wood floor with minimum total thickness of 1-3/8"

  • Apply over OSB.
  • Apply over concrete - even concrete that has cured less than 28 days.
  • Apply over cracked concrete.
  • Apply over damp basement floors or radiant-heated concrete floors.

Ideal for interior tile installations. Durabase-DD is recommended for outside or high-moisture installations.

Dural Durabase-CI Plus

Function

Ceramic and stone tiles are ideal surface products because they are durable, easy to maintain, and hygienic. Because of today's lightweight construction methods, installation of hard surface coverings can become particularly challenging. The solution is a multiple-functioning underlayment that protects the integrity of the tile assembly.

Dural Durabase-CI Plus is a polyethylene membrane solution containing a pattern of circular cavities with an anchoring fleece webbing laminated to its underside. Unlike other products, Durabase CI PLUS also features an open mesh bonded to the top of the structure for improved tile bonding. The bottom fleece webbing allows secure bonding of Durabase-CI Plus to the sub floor using thin-set mortar. A tile surface is installed over Dural Durabase-CI Plus with thin-set mortar. The mortar forms bonded pillars within the circular cavities and the open mesh of the Durabase-CI Plus matting.

Dural Durabase-CI Plus was designed specifically for ceramic tile and natural stone installations. The Durabase-CI Plus provides a comprehensive load support, an uncoupling layer, waterproofing membrane, and vapor management layer that accommodates moisture from beneath the tile covering. Durabase-CI Plus neutralizes stresses and isolates cracks.

a) Uncoupling

Tile has been successfully installed for thousands of years by incorporating a forgiving uncoupling shear-interface layer below the tile assembly. Dural Durabase-CI Plus provides this uncoupling to prevent stresses of any expanding, contracting or moving substrate from causing cracks or delamination of the top tile surface layer.

b) Waterproofing

The Dural Durabase-CI Plus material's polyethylene composition helps prevent moisture from penetrating the substrate; many of today's substrate materials are moisture sensitive.

c) Vapor management

The Dural Durabase-CI Plus construction provides air channels allowing moisture from the substrate to evaporate while neutralizing vapor pressure. Because of this feature, tiles may be installed onto foundations which are still wet (green,) usually eliminating the need for elaborate pretreatment and special adhesives.

d) Support/load distribution

Like cylindrical building columns that can support massive loads, the circular-column type mortar structures formed in the round cavities of the matting provide tremendous vertical strength. Loads on the tile surface are supported via these columns of mortar over the substrate. The Durabase-CI Plus material's flexibility combined with the formed cylindrical columns of mortar provide the needed load strength AND the decoupling capability to prevent cracking of the tile surface layer. Extensive lab and installation verifies the ability of Dural Durabase-CI Plus to support extreme loads while maintaining the integrity of the tile surface layer.

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