Product Data Sheet Safety Data Sheet Show all documents

Sikalastic® Rapid-723

High-performance, rapid-setting, polymethyl methacrylate-based (PMMA) liquid resin

Sikalastic® Rapid-723 is a two-component high-performance, rapid-setting, polymethyl methacrylate-based (PMMA) liquid resin. Sikalastic® Rapid-723 is combined with Fleece and cures to form a monolithic, self-flashing and self-adhering reinforced waterproofing membrane.

  • UV stable, high solids and VOC-compliant
  • Rapid curing and easy application provides same-day installation
Product Data Sheet Safety Data Sheet Show all documents

Usage

AREAS OF APPLICATION
  • New Roofs
  • Reroofs
  • Recovers
 

Advantages

  • UV stable, high solids and VOC-compliant
  • Rapid curing and easy application provides same-day installation

Packaging

4.2 gallon (15.9 L) pails, 44.1 lbs (20 kg) per pail, 36 per pallet

Color

White and gray

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Factory Mutual
  • Underwriters Laboratories
  • Florida Building Code
  • Miami-Dade County
 
Product Information

Chemical Base

Two-component polymethyl methacrylate (PMMA) liquid

Shelf Life

Sikalastic® Rapid-723 has a shelf life of up to 12 months in the original unopened pail when properly stored, sealed and unmixed.

Storage Conditions

Store in a tightly closed container in a cool, dry, ventilated area away from heat and oxidizing agent. Do not store in direct sunlight or in temperatures below 55°F (13°C) or above 80°F (27°C). Keep away from open fire, flame or any ignition source.

Volatile organic compound (VOC) content

See Product Safety Data Sheet
Technical Information

Testing

87

(ASTM D-2240)

Resistance to Static Puncture

56 lbf (249 N)

(ASTM D-5602)

Tensile Strength

60 lbf/in (10.5 kN/m) Peak Load @ 73°F (23°C), ave.

(ASTM D-5147 Section 6)

Dimensional Stability

0.1%

(ASTM D-5147 Section 10)

Tear Strength

75 lbf (334 N)

(ASTM D-5147 Section 7))

Water Absorption

0.9%  @212° F (100° C)

(ASTM D570)

Low Temperature Bend

-33 °F (-36.1 °C)

(ASTM D-7264)

Elongation at break

55% Elongation @ Peak Load, ave.

(ASTM D-5147 Section 6)

Application

Application Information

Mixing Ratio

Temperature RangeCatalyst required (per liter of resin)
50°F to 68°F (10°C to 20°C)5 tablespoons (50 g)
68°F to 95°F (20°C to 35°C)2.5 tablespoons (25 g)

Catalyst quantity dependent on the ambient temperature.

Product Temperature

50°F to 86°F  (10°C to 30°C)

Ambient Air Temperature

50°F to 95°F (10°C to 35°C) 

Substrate Temperature

50°F to 122°F (10°C to 50°C) 

Pot Life

15 to 20 minutes

Cure Time

3-6 hours

Waiting / Recoat Times

60 to 90 minutes

All working and cure times are approximate and may vary upon wind, humidity, and ambient/ surface temperatures. 
Consumption

Coverage

                                          APPROXIMATE COVERAGE RATES

     

SUBSTRATE PROFILEBASE COAT mils(mm)TOP COAT mils(mm)TOTAL THICKNESS mils(mm)COVERAGE PER 4.2 GAL (20 KG) PAIL
Smooth          (CPS 1)63 (1.6)35 (0.9)98 (2.5)

70 ft2

Typical           (CPS 3-4)71 (1.8)35 (0.9)106 (2.7)

66 ft2

SBS Granulated Sheet (CPS 5)87 (2.2)35 (0.9)122 (3.1)

57 ft2

Rough            (CPS 6)

105 (2.7)35 (0.9)140 (3.6)50 ft2

All values are nominal. Coverage rates may vary depending on substrate conditions and the application technique. Wet and dry thicknesses are always equivalent.
Application steps

SUBSTRATE PREPARATION

Surfaces must be dry, clean and free from loose particles, formwork residues, curing products, irregularities, grouts, etc. In most cases Sikalastic® Rapid Primer ASP is required before applying Sikalastic® Rapid-723.

MIXING

Thoroughly stir the entire container of Liquid resin with a slow-speed (200 to 400 rpm) mechanical mixer (electric drill with a mixing blade) for two  to three minutes before each use, and prior to pouring off resin into a second container if batch mixing. Only catalyze  the amount of material that can be used within 10 to 15 minutes. Add pre-measured Catalyst Powder to the resin component, stir for two minutes. The amount of catalyst required is determined by resin weight and ambient temperature

APPLICATION

After mixing, apply catalyzed resin to clean and prepared substrate at the required consumption using rollers, brushes or notched squeegees. The resin should be spread evenly onto the surface using care not to spread too thin or pool in low areas. 

  

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