Product specifications
Download Jobsite Flooring spec sheet (PDF)- Brand
- ARDEX
- Product type
- Uncoupling membrane
- Size
- 3 ft 3 in. × 65 ft 6 in. roll
- Coverage
- 215 sq. ft. per roll
- ARDEX product
- ARDEX UI 740 FLEXBONE
- Thickness
- 1/8 in. (3 mm)
- Robinson rating
- Extra Heavy
- Bonding mortar
- Polymer-modified ARDEX mortar, 1/4 × 1/4 in. square notch
- Min. tile size
- 2 × 2 in., 1/4–5/16 in. thick
- Max. mortar over mat
- 1/4 in. (6 mm)
- Time to grout
- Typically 3–24 hr, depending on mortar
- Warranty
- SystemOne 25-year limited with select ARDEX mortars and grouts
Manufacturer documents
Technical data sheet (ARDEX)Product overview (ARDEX)FLEXBONE system brochure (ARDEX)ARDEX Uncoupling Membrane · JF-11328
ARDEX Uncoupling Membrane 215 sq. ft.
3 ft 3 in. × 65 ft 6 in. roll · Underlayment
A 1/8 in. uncoupling membrane with a bone-shaped cavity pattern and a fleece backing, set in thinset over concrete or wood subfloors. It absorbs substrate movement to protect tile and grout, spreads heavy loads, and can act as a waterproof layer when seams are sealed with ARDEX TLT seam tape.
What it’s used for
- Large-format porcelain, ceramic, quarry and natural stone tile
- Heavy-traffic commercial floors such as malls, airports, hospitals and offices
- Residential floors and bathrooms
- Over concrete or plywood/OSB subfloors
- Waterproofing in bathrooms and wet areas (with TLT seam tape)
REGULAR PRICE$322.93 / roll
Contractors and builders get trade pricing with an account. See trade accounts
Sold individually, priced per roll.
Minimum order: 1.
Special pallet pricing available
Contact us for pricing: 703-929-8455 or orders@jobsiteflooring.com.
Availability: Confirm before ordering
1 roll$322.93
Estimated lead time: 1–2 weeks. Delivery to Virginia, Washington, D.C., and Maryland. We’ll reach out with a quote that includes shipping after you request an order.
Delivery, cancellations & damage policy