SPEC DATA SHEET

1 | Page MASTER PAINT & CHEMICAL CORP. CARR#127 KM 12.7 BO. MAGAS GUAYANILLA PR 00656

TEL: 787-835-4000 / FAX: 787-835-2965 / E-FAX: 787-966-7180

Rev. May., 2016

Supersedes Dec, 2012

Masterflex® Crack Filler

Penetrating Crack Filler for Professional Use

Interior - Exterior

SECTION 1 - PRODUCT DESCRIPTION

SECTION 2 - TYPICAL USE

SECTION 3 - PRODUCT ADVANTAGE

SECTION 4 - COLO

SECTION 5 - GLOSS

Masterflex® Crack Filler is a 100% mastic elastomeric acrylic product designed to correct cracks and seals leaks.

Masterflex® Crack Filler is a flexible mastic that will adhere to any surface (clean and dry), and fill any cracks and holes, large or small in

concrete, asphalt, wood, metal and polyurethane. Leave a 100% elastomeric acrylic membrane, flexible white finish. Easy to apply, water

clean-up, excellent durability, not crack, not crumble, not peel and is it formulated with raw materials that makes it resistant to film mildew

growth.

 Repairs & Seals (penetrates cracks on concrete, wood, metal,

asphalt, and polyurethane).

 Seals & Waterproofs (penetrates deep into cracks & block water).

 Flexible & Long lasting (100% acrylic elastomeric).

 Easy to use (apply with paint brush or putty knife / designed for

hard to reach areas).

Ultra white color.

Flat finish.

SECTION 6 - COMPOSITION

100% Elastomeric acrylic resins, inorganic pigments free of lead, chromates and mercury.

SECTION 7 – PHYSICAL AND CHEMICAL PROPERTIES

Viscosity: 130 – 140 Ku (Stormer) Flash Point: None Weight per gallon (average): 12.0 +/- 0.15 lbs/gal

Solids by Volume (average): 60.0 +/- 1.0%

SECTION 8 – SURFACE PREPARATION



Smooth finish

 Water based

 100% pintable

 Moisture and mildew resistant

 Smooth finish

 Knife grade

Surfaces must be free of dust, dirt and/or grease. Before applying, remove old loose sealant and mildew. For appropriate adhesion and product

durability, new concrete surfaces must be cured for at least 30 days. Metal surfaces must be rust free.

To remove mildew: prepare a mix of ¼ gallon of bleach (hypochlorite) to ¾ gallon of hoy water and scrub the area with brush. Rinse

thoroughly and let it dry completely. Wear safety goggles and rubber gloves to avoid eye and skin irritation.

SPEC DATA SHEET

2 | Page MASTER PAINT & CHEMICAL CORP. CARR#127 KM 12.7 BO. MAGAS GUAYANILLA PR 00656

TEL: 787-835-4000 / FAX: 787-835-2965 / E-FAX: 787-966-7180

Rev. May., 2016

Supersedes Dec, 2012

The information and recommendations set forth in this Product Data Sheet are based upon test conducted by Master Paints and

Chemical Corp. Since application variables are a major factor in product performance, this information should serve only as a

general guide. Improvements in coating technology may cause future technical data to vary from what is in this bulletin. Consult

your Master Paints and Chemical Corp. representative or call 787 835 4000 to obtain the most recent Product Data Sheet.

SECTION 9 - APPLICATION

SECTION 10 – APPLICATION TOOLS

SECTION 11 – CAUTION

SECTION 12 – FIRST AID

SECTION 13 – PACKAGING

Quarts and 1 gallon

1. Crack (non structural) less than 1/32”: Apply Masterflex® Crack Filler over the crack with two inches at each side of the

Masterflex® Fiber Glass Patching Weave.

2. Cracks (non structural) larger than 1/32”: It is recommended that it be pouted out to ¼”, wide and ¼” deep. Clean crack with water.

Let it dry and prime with Masterflex® Roof Primer, and let it dry again. Apply Masterflex® Crack Filler. Put the Masterflex®

Fiber Glass Patching Weave and apply another coat of Masterflex® Filler on top.

3. For joints: Fill joint with backing rod and cover with Masterflex® Crack Filler. Put the glass fiber mesh and apply a second coat in

the mesh.

Note: For optimum appearance, dip spatula into water within 10 minutes of application.

Recommended Film Thickness: 1/32” under standard conditions

Coverage (average): 110 sq. ft. gallon, depending on the depth of the cracks

Method: Knife grade

Thinning: Not recommended.

Dry time: If latex paint will be used wait, 24 hour after Masterflex® Crack Filler application.

If alkyd paint will be used, wait 48 hours after Masterflex® Crack Filler application.

Knife grade.

Harmful if swallowed. May cause eye, nose and throat irritation. Avoid contact with skin and eyes and avoid breathing of vapors and spray

mist. Use only with adequate ventilation. When applying spray, use respiratory protection (NIOSH/MSHA TC23C or equivalent), eye

protection and protective clothing. Storage the air tight sealed product in a dry and well ventilated environment. KEEP OUT OF REACH

OF C

HILDREN

In case of skin contact, remove product from skin with soap and water. When eye contact with products occurs, rinse affected area with large

amounts of water at least 15 minutes and get immediate medical attention. If swallowed, medical attention is needed immediately. Close

container after each use. For proper disposal of excess material, please contact your local city waste management agency. Before use, ask and

read the Safety Data Sheet (SDS) of the product.

Crack reparation: make sure that all cracks and joints are sealed. Apply Masterflex® Crack Filler with a spatula and then apply the

Masterflex® Fiber Glass Patching Weave over cracks, joints, and around all objects anchored to the roof, covering at least two more inches at

each side of crack. Let dry for 24 hours and apply the selected roof sealer from Master.

A. For small areas, apply Masterflex® Crack Filler with a brush or spatula.

B. While the product is humid, put the Masterflex® Fiber Glass Patching Weave on top.

C. While it is still humid, apply another coat of Masterflex® Crack Filler over the Master Fiber Glass Patching Weave.

WARNING! If you scrape, sand, or remove old paint, you may release lead dust or fumes. LEAD IS TOXIC. EXPOSURE TO LEAD

DUST OR FUMES CAN CAUSE SERIOUS ILLNESS, SUCH AS BRAIN DAMAGE, ESPECIALLY IN CHILDREN. PREGNANT

WOMEN SHOULD ALSO AVOID EXPOSURE. Wear a properly fitted NIOSH approved respirator and prevent skin contact to control

lead exposure. Clean up carefully with a HEPA vacuum and a wet mop. Before you start, find out how to protect yourself and your family by

contacting the USEPA National lead Information Hotline at 1-800-424 LEAD or log on to www.epa.gov/lead.

SPEC DATA SHEET

3 | Page MASTER PAINT & CHEMICAL CORP. CARR#127 KM 12.7 BO. MAGAS GUAYANILLA PR 00656

TEL: 787-835-4000 / FAX: 787-835-2965 / E-FAX: 787-966-7180

Rev. May., 2016

Supersedes Dec, 2012