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Mapei Ultraflex 2 Tile Mortar, Gray, 10 lb Bag, 2-Pack

Mapei Ultraflex 2 Tile Mortar, Gray, 10 lb Bag, 2-Pack

4.7· 77 ratings

Last price we saw

$21.76at Shell Lumber and Hardware, last seen Nov 4

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Our take on the Mapei Ultraflex 2 Tile Mortar, Gray, 10 lb Bag, 2-Pack

Mapei Ultraflex 2 is a polymer-modified thin-set mortar in powder form, mixed with water and sold in gray 10 lb bags (this listing is a 2-pack). It bonds ceramic and porcelain tile to concrete, cement backer board and similar substrates, and its polymer content gives it more grip and flexibility than a basic unmodified thin-set. Each 10 lb bag covers roughly 38 to 45 sq ft at thin-set thickness. It cures in about 28 days and can be used at application temperatures from 40 to 95°F.

Best for
DIY tile jobs on floors and walls
Porcelain and ceramic tile over concrete or backer board
Small bathrooms, backsplashes and repair patches
Buyers who want a pro-grade modified thin-set in small bags
Pros
  • Polymer-modified for stronger adhesion and some flexibility
  • Just add water — single-component, no liquid additive to buy
  • Small 10 lb bags suit small jobs and easy mixing
  • Wide 40 to 95°F application range
  • Gray color works under most tile and stone
  • Rated 4.7 out of 5 from 77 ratings
Cons
  • 28-day full cure means no grouting or heavy traffic early
  • Only about 38 to 45 sq ft coverage per 10 lb bag
  • Gray only — not ideal under light translucent stone
  • Needs a clean, flat substrate; not a leveling compound
  • Two bags means leftover powder if the job is small

Mapei Ultraflex 2 Tile Mortar, Gray, 10 lb Bag, 2-Pack prices at every store

  • Shell Lumber and HardwareCheck price at Shell Lumber and Hardware

Mapei Ultraflex 2 Tile Mortar, Gray, 10 lb Bag, 2-Pack price history

Lowest price we've seen: $21.76 on Nov 4 at Shell Lumber and Hardware. Tracked across 1 store since Nov 4.

What reviewers say

Ratings are strong at 4.7 out of 5 across 77 ratings, and the pattern in owner feedback on this type of modified thin-set is consistent: good grab, easy mixing and reliable hold.

Pros
  • Good adhesion on porcelain and ceramic
  • Mixes smoothly with water
  • Holds tile without slipping on walls
Cons
  • Short working time once mixed
  • Coverage runs out faster than expected on large floors

Specifications

Cure Time
28 days
Mixing Instructions
Mixed with water
Quantity
1
Quantity Unit Of Measure
LB
Container Type
Bag
Dry Weight
50 lbs
Strength
Strong bond
Form
Powder, Bagged powder
Material
Mortar
Composition Strength
High-performance
Water Ratio
Mixed with water
Aggregates
Silica Sand
Binder
Portland Cement
Cement Type
Portland Cement
Additives
Polymer-modified
Composition Texture
Thin-set
Ingredient
Silica Sand, Portland Cement
Color
gray
Coverage Area
38 to 45 Sq-ft
Coverage Thickness
Thin-set
Application Method
Thin-set mortar
Application Temperature Range
40 to 95 deg F

Questions and answers

Is Ultraflex 2 worth it over a cheaper unmodified thin-set?
Yes for porcelain, large-format tile and areas that flex slightly. The polymer modification gives better adhesion than a basic unmodified mortar, which matters most on porcelain and exterior or wet areas.
How much area does a 10 lb bag cover?
About 38 to 45 sq ft at thin-set thickness with a small notch trowel. A 2-pack covers roughly 76 to 90 sq ft, less with a larger notch.
Can I use it over plywood or existing tile?
Ultraflex 2 is designed for concrete, cement backer board and similar cementitious substrates. Over plywood or existing tile, check Mapei's substrate requirements and use the right membrane or primer first.
How long before I can grout?
Wait at least 24 hours after setting tile before grouting, and keep heavy traffic off for longer. Full cure takes about 28 days.
What is in the 2-pack?
Two 10 lb bags of gray Ultraflex 2 powder. You supply the water and a mixing paddle; no liquid additive is needed.
What do buyers say about the Mapei Ultraflex 2 Tile Mortar, Gray, 10 lb Bag, 2-Pack?
Rated 4.7 out of 5 from 77 ratings.

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