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Schönox HS Sturdy Repair Patch and Smooth Compound - 33 lb


About

The new Schönox HS Sturdy, rapid-drying, repair and smoothing compound, incorporates hybrid active-dry technology creating a powerful solution with versatility and strengths previously unseen in flooring. From featheredge to 2” depths, HS Sturdy repairs, patches, and smooths combining tasks for use on a wide variety of substrates including concrete and gypsum as well as diverse ones such as wood, vinyl, and ceramic.

Schönox HS Sturdy is suitable for smoothing and leveling of:

  • Concrete, cement substrates
  • Floor leveling compounds
  • Gypsum substrates
  • Old substrates such as ceramic tiles
  • Old, water-resistant adhesive residues
  • Wooden substrates
  • Stair steps and wall breakouts

Calculator

How many square feet of patching area?
Tip: multiply the length (in feet) by the width (in feet)

Patch depth 33 lb bags
1/16"
1/8"
1/4"
3/8"
1/2"
3/4"
1"
1-1/4"
1-1/2"
1-3/4"
2"

Specs

  • Pot life: 15 minutes
  • Ready for foot traffic: 30 minutes
  • Working temperature: 41ºF - 90ºF
  • Coverage at featheredge: 600 sq. ft. per unit
  • Coverage at 1/8" : 100 sq. ft. per unit
  • Compressive strength: 4400 psi @ 28 days

Instructions

Priming

  • Gypsum substrates (sanded and vacuumed):
    • no priming required when used as a true featheredge up to 1/4”
    • prime with Schönox KH Fix when used as a repair mortar above 1/4”
  • Cement substrates such as concrete, prime with Schönox VD (1:3) or KH Fix
  • Non-porous substrates such as ceramic tiles (thoroughly cleaned and abraded), terrazzo, and water-resistant adhesive residues (removed as far as possible), prime with Schönox SHP
  • Wooden substrates such as OSB board and plywood (well screwed and/or bonded), prime with Schönox SHP

Mixing Ratio

  • Mix each 33lb. bag with 3.8 - 4.6 liters / 4 - 5 quarts of water
  • We recommend to extend Schönox HS Sturdy with dry, clean aggregate (aggregate is added last) at a layer thickness above 1/2“: type and amount of aggregate used will affect product performance. As qualities of locally available aggregates vary, we recommend to perform tests prior to use on a larger scale.
  • Do not overwater
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Schönox HS Sturdy Repair Patch and Smooth Compound - 33 lb

Quantity must be 1 or more
Regular price
$59.95
Sale price
$59.95

Patented Hybrid Active-Dry Technology allows HS Sturdy to dry independently of
the job site’s environmental conditions with minimal shrinkage. HS Study delivers
on safety as well as performance with its low pH, very low emissions, and special
dust-reduced properties.

  • Great for application from featheredge to 2" thickness
  • For interior use only
  • Exceptional hardness and strength
  • Fast Drying
  • Very smooth surface and suitable for castor whee loadings

About

The new Schönox HS Sturdy, rapid-drying, repair and smoothing compound, incorporates hybrid active-dry technology creating a powerful solution with versatility and strengths previously unseen in flooring. From featheredge to 2” depths, HS Sturdy repairs, patches, and smooths combining tasks for use on a wide variety of substrates including concrete and gypsum as well as diverse ones such as wood, vinyl, and ceramic.

Schönox HS Sturdy is suitable for smoothing and leveling of:

  • Concrete, cement substrates
  • Floor leveling compounds
  • Gypsum substrates
  • Old substrates such as ceramic tiles
  • Old, water-resistant adhesive residues
  • Wooden substrates
  • Stair steps and wall breakouts

Calculator

How many square feet of patching area?
Tip: multiply the length (in feet) by the width (in feet)

Patch depth 33 lb bags
1/16"
1/8"
1/4"
3/8"
1/2"
3/4"
1"
1-1/4"
1-1/2"
1-3/4"
2"

Specs

  • Pot life: 15 minutes
  • Ready for foot traffic: 30 minutes
  • Working temperature: 41ºF - 90ºF
  • Coverage at featheredge: 600 sq. ft. per unit
  • Coverage at 1/8" : 100 sq. ft. per unit
  • Compressive strength: 4400 psi @ 28 days

Instructions

Priming

  • Gypsum substrates (sanded and vacuumed):
    • no priming required when used as a true featheredge up to 1/4”
    • prime with Schönox KH Fix when used as a repair mortar above 1/4”
  • Cement substrates such as concrete, prime with Schönox VD (1:3) or KH Fix
  • Non-porous substrates such as ceramic tiles (thoroughly cleaned and abraded), terrazzo, and water-resistant adhesive residues (removed as far as possible), prime with Schönox SHP
  • Wooden substrates such as OSB board and plywood (well screwed and/or bonded), prime with Schönox SHP

Mixing Ratio

  • Mix each 33lb. bag with 3.8 - 4.6 liters / 4 - 5 quarts of water
  • We recommend to extend Schönox HS Sturdy with dry, clean aggregate (aggregate is added last) at a layer thickness above 1/2“: type and amount of aggregate used will affect product performance. As qualities of locally available aggregates vary, we recommend to perform tests prior to use on a larger scale.
  • Do not overwater