TerraCoat

SpanCoat

Primer for TerraCoat Glaze Repair

SpanCoat is a primer that must used before the application of TerraCoat Glaze Repair. This low odor waterborne modified polyamine epoxy seals cementitious and other porous substrates.

Features and Benefits:

*Flexible: Allows for application over dissimilar surfaces.

Application Procedures

Surface Preparation
Use Jahn M100 or M125 to repair the clay body of terra cotta tiles. The repair mortar must cure for 14 - 28 days prior to application of SpanCoat primer. Prior to application, perform substrate moisture test (see below). The surface must be clean, dry and free of oil, grease and other contaminants. When applying SpanCoat over previously painted surfaces, remove old paint not tightly bonded to the surface. A test area is recommended to determine compatibility of SpanCoat over unknown previously applied coatings.

Moisture Test: Substrate must be completely dry before coating. New masonry repairs should not be coated for 14 - 28 days to permit the mortar to cure and dry out unless otherwise directed by the manufacturer. Free water and soluble alkaline salts remaining in the mortar may contaminate coatings or eventually cause delamination, blistering peeling and/ or efflorescence staining. For this reason, repairs/substrate should be visually inspected and tested for moisture content before painting. Damp spots, efflorescence or white salts appearing on the surface are obvious indicators of moisture. Hidden dampness can be checked by using a polyethylene cover test. A heavy gauge plastic film, approximately 18 in. square and 4 mils thick, is securely taped to a small section of the repair or substrate. Pieces of test film should be placed at various locations that are likely to be slow drying, such as below grade, low spots in floors, inside corners and lower wall areas. The polyethylene sheet is checked after 24 hours for beads of moisture. If condensation appears on the backside of the film, or if the substrate under the film appears to be darker, damp or wet, this would indicate the presence of moisture in the substrate. Reference ASTM D 4263 for the complete procedure prior to proceeding. Should moisture be detected, perform (What is the value?). Multiple moisture tests should be performed on several areas of the project. Some areas of the structure may accrue more moisture than others such as: parapets, window headers, sills, water tables, any projections, etc.

Mixing
SpanCoat is a two-component primer. Stir contents of the can marked Part A. Add the contents of the can marked Part B to Part A while under agitation. Continue agitation until the two components are thoroughly mixed. Do not use mixed material beyond pot life limits. Unused material must be kept tightly closed at all times. Thinning is NOT recommended.

Application

Airless Sprayer: Use appropriate tip/atomizing pressure for equipment, applicator technique and weather conditions.

   Tip Orifice - 0.013" -0.019" (330-485 microns)
   Atomizing Pressure - 2500-3000 psi (172-207 bar)
   Mat'l Hose ID - 1/4" or 3/8" (6.4 or 9.5 mm)
   Manifold Filter - 60 mesh (250 microns)

Roller: Use short synthetic nap rollers for smooth surfaces, long synthetic nap rollers for rough surfaces.

Brush: Use a good quality nylon or synthetic bristle brush.

Curing Time:
At 75° F (24° C): To touch 1 1/2 hours. To recoat: 3 1/2 hours minimum, 7 days maximum. If more than 7 days have elapsed after applying SpanCoat, apply a refresher coat before top coating. Higher humidity and/or lower temperatures increase the cure time.

Clean up:
Flush and clean all equipment immediately after use with warm, soapy water. Flush spray equipment with a final rinse of ethanol or isopropyl alcohol.

Limitations:
*The ideal temperature conditions for applying TerraCoat and SpanCoat is between 60° - 90° F. If the ambient and substrate temperatures do not fall in this range, call a Cathedral Stone Technical Representative for special instruction.
*Thinning is not recommended.
*Do not apply over mortar joints.

Pot Life:
12 hours at 77° F (25° C)

Packaging:

*Five-Gallon Kit: Consists of approximately 4.0 gallons of Part A in a five-gallon pail and a full-filled, half-gallon jug of Part B. When mixed, yields five gallons (18.9 L).

*One Gallon Kit: Consists of a partially-filled one gallon can labeled Part A and a partially filled quart can labeled Part B. When mixed, yields one gallon (3.79 L).

Net weight per gallon: 8.58 + 0.5 lbs (3.84 + .11 kg) (mixed)

Coverage:
One gallon will cover 180 to 400 Sq ft (16.7 to 37.2 m2). Highly porous or rough/irregular surface will reduce coverage. Application of coating below minimum or above maximum recommended dry film thickness may adversely affect coating performance.

Storage And Shelf Life:
Store material in a dry area away from direct sunlight. Ambient storage conditions should be in the range of 35° F (2° C) to 110° F (43° C). Average shelf life is twelve months in original, unopened packaging at recommended storage temperature. Do not allow containers to freeze

Technical Data

Volume Solids: 17.0 + 2.0%

Recommended DFT (dry film thickness): 0.7 to 1.5 mils (18 to 38 microns) per coat. (non-absorbent substrates)

Flash Point - SETA:

Volatile Organic Compounds (VOC):
	Grams/Liter	Lbs/Gal
Unthinned	170 grams/Liter	1.42 lbs/gal
Thinned	NA	NA

Warning:
TerraCoat and SpanCoat products contain chemical ingredients, which are considered hazardous. Read container label warning and Material Safety Data Sheet for important heath and safety information prior to the use of this product. Keep out of reach of children.

04/2005