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Duron Paints & Wallcoverings: Services: Wallcoverings:
Exterior Masonry Coating Specifications — Concrete/Stucco
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SURFACE PREPARATION: The surface must be clean, dry, sound and free of grease, dirt, oil, mildew, chalk, laitance, efflorescence and release agents. *1Allow new masonry to cure 30 days, or a minimum of 7 days when the coating systems below are used. Remove projections and mortar spatter from concrete and loose stucco. On previously painted surfaces, remove loose peeling paint back down to a sound coating. Apply a test patch over previously painted surfaces to assure compatibility.
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Performance Requirements
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Product/System Type
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Color Texture
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Primer/First Coat Spread Rate
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Finish Coat Spread Rate
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Total DFT
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Waterproofing (Premium Grade System)
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100% Acrylic Elastomeric over acrylic primer
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*2w,p,m smooth
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Maxbond Surface Conditioner @300 - 400 s.f./gal or Dura Crete Waterborne Acrylic Masonry Primer @ 300-350 s.f./gal
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*3Maxflex Premium Elastomeric @ 80 s.f./gal
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11-12 mils
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Waterproofing (Standard Best Grade System)
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100% Acrylic Elastomeric over acrylic primer
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*2w,p,m smooth
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Maxbond Surface Conditioner @300 - 400 s.f./gal or Dura Crete Waterborne Acrylic Masonry Primer @ 300-350 s.f./gal
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*3Maxflex Performance™ Elastomeric @ 85 s.f./gal
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11-12 mils
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Waterproofing
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100% Acrylic Water Based Texture Finish over solventborne waterproofing coating
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*2w,p,m fi,med,crs
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*4Dura Crete High Build Solventborne Waterproof Coating, Smooth @ 80 - 90 s.f./gal
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Dura Crete Exterior 100% Acrylic Texture @ 65 - 75 s.f./gal
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20 - 23 mils
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Weatherproofing
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100% Acrylic Texture Finish over acrylic primer
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*2w,p,m fi,med,crs
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Maxbond Surface Conditioner @300 - 400 s.f./gal or Dura Crete Waterborne Acrylic Masonry Primer @ 300-350 s.f./gal
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Dura Crete Exterior 100% Acrylic Texture @ 65 - 75 s.f./gal
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12 - 14 mils
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Waterproofing Surface Tolerant, Low Temperature Application
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Vinyl Toluene solvent acrylic, self-priming on smooth surfaces, brick and stucco
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*2sm, sand, med
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*4Dura Crete High Build Solventborne Waterproof Coating, Smooth @ 80 - 90 s.f./gal
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*4Dura Crete High Build Solventborne Waterproof Coating, Smooth, Sand or Medium Texture @ 80 - 90 s.f./gal
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8 - 9 mils (1 coat) 16 - 18 mils (2 coats)
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Weatherproofing or Waterproofing
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100% Acrylic Smooth High Build Finish, self-priming
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w,p,m,d smooth
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Weatherproofing: 1 coat only Dura Crete HP (High Performance) 100% Acrylic Masonry Finish @ 150 - 200 s.f./gal
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Waterproofing: 2 coats Dura Crete HP (High Performance) 100% Acrylic Masonry Finish @ 90 -115 s.f./gal per coat
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Weatherproofing 3.4 - 4.5 mils Waterproofing 12-16 mils
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Weather Resistant Paint System (High Spread Rate) Flat, Satin or Semi-Gloss Finish
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100% Acrylic (paint type) Coating over acrylic primer
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w,p,m smooth
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Maxbond Surface Conditioner @300 - 400 s.f./gal or Dura Crete Waterborne Acrylic Masonry Primer @ 300-350 s.f./gal
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2 coats Weathershield (paint type) Coating; Flat, Satin or Semi-Gloss @ 250 - 350 s.f./gal per coat
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5-6 mils approx.
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Water Repellent/Waterproofing Penetrating Sealer
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Proprietary waterborne acrylic copolymer
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clear
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*5Dura Crete Waterborne, U/V Protected Waterproofing Sealer 100 - 250 s.f./gal per coat. 2 coats on vertical surface; 1 coat on horizontal surface
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*5Dura Crete Waterborne, U/V Protected Waterproofing Sealer 100 - 250 s.f./gal per coat
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n/a (highly penetrating)
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w,p,m,d = white, pastel, medium and lighter deep colors
sm,fi,sand,med,crs = smooth, fine, sand, medium, coarse
NOTE:*1 The use of alkali-resisting surface conditioners and/or special masonry coatings (such as those listed above) allow for earlier applications of coating systems with less cure of the masonry.
*2 It has been our experience that thick films of elastomeric or texture coatings, even those made with 100% acrylic resin, are susceptible to fading when shaded to deep or dark colors. Duron therefore recommends our (thinner film) Exterior Design Accents 100% Acrylic Semi-Gloss or Velvet Flat Finishes or our Interior/Exterior Design Accents 100% Acrylic Satin or Semi-Gloss Finishes, over elastomeric or texture coatings when dark color accent walls or stripes are desired.
*3 It is acceptable to use either Duron Maxflex 100% Acrylic Elastomeric Coatings or Duron Dura Crete HP Exterior 100% Acrylic Masonry Finish directly on new uncoated concrete and stucco when the pH of the surface is not greater than 13, and if these coatings are not shaded with organic colorants.
*4 One (1) coat of Duron Dura Crete High Build Solventborne Coating, Smooth, applied at 80 - 90 s.f./gallon and in a manner to render the dry film "pinhole free", will waterproof a smooth surface.
*5 This product can be used on both vertical and horizontal surfaces. For vertical surfaces, apply two (2) coats with four hours drying between coats. For horizontal surfaces, apply only one (1) coat.
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