Schluter Systems DITRA 150-sq ft Orange Plastic Waterproofing Tile MembraneDITRA 150 sq ft Uncoupling & Waterproofing Tile Membrane Schluter DITRA is a 1 8 in. polyethylene uncoupling and waterproofing membrane designed to protect tile installations from substrate movement and moisture. Its dovetailed square cavities and bonded fleece deliver vapor management and robust load distribution across a wide range of subfloors. Key Features: 4 in 1 Protection: Uncoupling, waterproofing, vapor management, and load distribution for

DITRA 150-sq ft Uncoupling & Waterproofing Tile Membrane

Schluter-DITRA is a 1/8 in. polyethylene uncoupling and waterproofing membrane designed to protect tile installations from substrate movement and moisture. Its dovetailed square cavities and bonded fleece deliver vapor management and robust load distribution across a wide range of subfloors.

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Key Features:

• 4-in-1 Protection: Uncoupling, waterproofing, vapor management, and load distribution for long-lasting tile floors
• Thin Profile: 1/8 in. (3.5 mm) thickness minimizes height transitions to adjacent flooring
• Versatile Installation: Bonds over concrete, plywood/OSB, gypsum, existing vinyl, structural planks, and radiant-heated floors
• Efficient Troweling & Filling: Cutback cavities with air-release corners speed mortar filling and installation
• Pro-Preferred Alternative: Lightweight underlayment that replaces cement backer board in many applications

Please check the Product Data Sheet Here

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Specifications Table:

Specification	Details
Coverage	150 sq. ft.
Material	Polyethylene membrane with square, cutback cavities and bonded anchoring fleece
Thickness	1/8 in. (3.5 mm)
Primary functions	Uncoupling, waterproofing, vapor management, load distribution
Installation substrates	Concrete, plywood/OSB, gypsum, existing vinyl floors, structural planks, subfloors, radiant heated floors
Use	Interior, dry or wet areas
Alternative to	Cement backer board or plywood underlayment
Notable features	Cutting grooves for precise cuts; air-release vents at cavity corners for faster filling

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Frequently Asked Questions (FAQ):

Q: What subfloors can I install DITRA over?
A: Concrete, plywood/OSB, gypsum, existing vinyl floors, structural planks, and radiant-heated floors, per Schluter guidelines.

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Q: Is DITRA waterproof by itself?
A: Yes—its polyethylene layer is waterproof; seal seams and edges per the handbook to create a continuous waterproof assembly.

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Q: How thick is DITRA and will it change floor height?
A: DITRA is 1/8 in. (3.5 mm) thick, helping minimize height transitions compared to other underlayments.

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Q: Can I use DITRA with large-format or stone tile?
A: Yes, but for greater movement accommodation or to match 3/4 in. hardwood transitions, Schluter recommends DITRA-XL (5/16 in.).

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Q: Is it for interior or exterior use?
A: DITRA and DITRA-XL are for interior applications, in dry or wet areas.

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Sleek Strength Beneath Every Step

DITRA is the quiet hero that elevates a room’s finish, lending a seamless, gallery-like plane to your tile. Its geometric grid is a modernist detail hidden in plain sight, engineered to absorb movement and keep surfaces pristine. Use it to finesse transitions between rooms—especially where thin, elegant stone begs for a low profile. For the designer who prizes longevity and luxury, this membrane is the foundation of flawless living.

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Build a flawless, long-lasting tile floor—choose DITRA and start your project with confidence today.