Product Data Sheet Safety Data Sheet Show all documents

Sikalastic® Rapid-723 WG

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

Sikalastic® Rapid-723 WG (winter grade) is a two-component high-performance, rapid-setting, polymethyl methacrylate-based (PMMA) liquid resin. Sikalastic® Rapid-723 WG 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

4.25 gallon (16.1 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 WG 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 Shore A Hardness

(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), MD1

55 lbf/in (9.6 kN/m) Peak Load @ 73°F (23°C), XMD1
130 lbf/in (22.8 kN/m) Peak Load @ 0°F (-18°C), MD1
110 lbf/in (19.3 kN/m) Peak Load @ 0°F (-18°C), XMD1

(ASTM D-5147 Section 6)

1 MD = Machine Direction, XMD = Cross Machine Direction.

Dimensional Stability

0.1%

(ASTM D-5147 Section 10)

Tear Strength

75 lbf (334 N) MD1

60 lbf (267 N) XMD1

(ASTM D-5147 Section 7))

1 MD = Machine Direction, XMD = Cross Machine Direction.

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% @ 73°F (23°C), 65% @ 0°F (-18°C), MD1

85% @ 73°F (23°C), 85% @ 0°F (-18°C), XMD1

(ASTM D-5147 Section 6)

1 MD = Machine Direction, XMD = Cross Machine Direction.

Application

Application Information

Mixing Ratio

Temperature Range

Catalyst required (per liter of resin)
23°F to 37°F (-5°C to 3°C)7 tablespoons (70 g)
37°F to 50°F (3°C to 10°C)5 tablespoons (50 g)
50°F to 68°F (10°C to 20°C)

2.5 tablespoons (25 g)

Layer Thickness

SUBSTRATE PROFILEBASE COATTOP COATTOTAL THICKNESS
SMOOTH63 mils  (1.6mm)35 mils (0.9 mm)98 mils (2.5 mm)
TYPICAL71 mils (1.8mm)35 mils (0.9 mm)106 mils (2.7 mm)
SBS GRANULATED SHEET87 mils (2.2 mm)35 mils (0.9 mm)122 mils (3.1 mm)

ROUGH

105 mils (2.7 mm)35 mils (0.9 mm)140 mils (3.6 mm)

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

Product Temperature

37°F to 68°F (3°C to 20°C) 

Ambient Air Temperature

23°F to 68°F (-5°C to 20°C) 

Substrate Temperature

23°F to 68°F (-5°C to 20°C) 

Pot Life

15 to 20 minutes

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

Cure Time

5 hours

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

Waiting / Recoat Times

90 to 120 minutes

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

Coverage

                              APPROXIMATE COVERAGE RATES PER 20 KG UNIT

SUBSTRATE PROFILE

COVERAGE RATES PER 20 KG UNIT

SMOOTH

70 ft2 (6.5 m2)

TYPICAL66 ft2 (6.1 m2)
SBS GRANULATED SHEET57 ft2 (5.2 m2)
ROUGH50 ft2 (4.6 m2)

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 WG.

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 2 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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