TDS
TECHNICAL DATA SHEETTECHNICAL DATA SHEET
INTERIOR/EXTERIOR BONDING PRIMER
NO. 432
PRODUCT INFORMATION
BEHR® Interior/Exterior Bonding Primer is specically formulated to bond to a variety of ‘tough-to-paint’ surfaces. Its
advanced chemistry provides a sound anchor for topcoats while reducing or potentially eliminating the need for sanding
dense and glossy surfaces. This product may be used under epoxies, lacquers, products containing xylene or other hot
solvents, provided it’s allowed to dry for 24 hours before topcoating and tested for compatibility in an inconspicuous area
before full coat application.
RECOMMENDED USES:
This primer securely bonds to hard-to-paint surfaces. Use over properly prepared uncoated or previously painted interior and
exterior surfaces such as:
• Concrete • Concrete Block/CMU • Fiber Cement • Brick • Stucco
• Plaster • Drywall/Gypsum Board • Wood • Engineered Wood • Wood Composites
• Ferrous Metals • Non-Ferrous Metals • Architectural Plastics • Vinyl/PVC • Fiberglass
• Chalky Surfaces • Glazed Tile • Glass • Paneling/Laminates • Galvanized Metal
• Annodized aluminium • Kynar® • Factory Finishes • Stainless Steel
COMPLIES WITH THE BELOW AS OF 10/1/2020
SCAQMD YES OTC YES
CARB SCM 2007 YES LADCO YES
CARB YES AIM YES
OTC PHASE II YES MPI 17
This coating conforms to USDA regulatory requirements
for incidental food-contact materials intended for use
on surfaces not in direct contact with food, such as walls,
oors and ceilings.
PRODUCT SPECIFICATIONS:
Tint Bases/Max Tint Load:
No. 432 128 oz / 2 oz
Resin Type: Acrylic
Weight per Gallon: 11.5 lb
% Solids by Volume: 42% ± 2%
% Solids by Weight: 58% ± 2%
VOC: < 100 g/L
Flash Point: N/A
Viscosity: 93 – 100 KU
Recommended Film Thickness:
Wet: 5.3 mils / Dry: 2.2 mils @ 300 sq ft/gal
Wet: 4.0 mils / Dry: 1.7 mils @ 400 sq ft/gal
Coverage: 300 – 400 sq ft/gal depending on the surface
texture, porosity and application method. Does not include
the loss of material from spraying. Film thickness depends
on porosity and various substrate irregularities.
APPLICATION:
Brush: Nylon/polyester
Roller: 3/8" – 3/4" nap roller cover, depending on surface
texture
Airless Spray:
Tip: .015" – .021"
Filter: 60 mesh
Fluid Pressure: 1,800 – 2,500 psi
Thinning: Do not thin if using a roller or brush; however, if
using a sprayer and thinning is required, thin with water at a
rate of no more than 1/2 pint per gallon.
Dry Time: @ 77°F & 50% RH
Longer dry time required in cooler temperatures and in
higher humidity.
To Touch: 30 minutes
To Recoat: 1 hour
SURFACE PREPARATION:
All surfaces must be clean, free of dust, chalk, oil, grease,
wax, polish, mold and mildew stains, loose and peeling
paint, rust and all other foreign substances.
Drywall: All drywall surfaces should be suciently sanded
smooth. Remove any remaining drywall dust prior to
priming. Allow all drywall compounds to be completely dry
prior to coating.
Wood: Remove mill glaze with sandpaper or use a product
such as BEHR PREMIUM® All-In-One Wood Cleaner No. 63
(exterior only) to open the pores of the wood and follow
all label instructions. For severe stains caused by mold,
mildew, algae and fungus, apply a mildew stain removing
product. Set nails and ll holes, scratches, and gouges with
the appropriate wood ller and let dry completely. Remove
all dust with a wiping cloth. Fill all gaps with a 100% acrylic,
siliconized, paintable caulking and allow to dry completely.
Patched and lled surfaces should be sanded smooth
and dusted clean prior to coating. WARNING! Sanding or
scraping pressure treated lumber may be hazardous; wear
appropriate protection.
Weathered Wood Surfaces: To remove loose wood bers,
or poorly adhered coatings on new or weathered wood
decks, siding, fences, shakes and shingles, use a product
such as BEHR PREMIUM Wood Stain & Finish Stripper No. 64
and follow all label instructions. Use a product such as BEHR
PREMIUM All-In-One Wood Cleaner No. 63 and follow all
label instructions to clean and brighten the wood surface
and to remove light to medium stains caused by mold,
mildew, algae and fungus.
Masonry (Stucco, Concrete, Concrete Masonry Units
(CMUs), Split-Faced Block): All masonry surfaces must be
cured at least 30 days before painting. The pH must be 10.0
or lower prior to coating.
Plaster: New plaster should be thoroughly dried out and
cured for a minimum of 30 days before painting. When
cured, clean using a mixed solution of one part vinegar and
one part water to remove eorescence and neutralize.
Steel: Minimum surface preparation is Hand Tool Cleaning
in accordance with SSPC-SP2. Remove all oil and grease from
the surface with a solvent in accordance with SSPC-SP1. For
optimal performance, use Commercial Blast Cleaning in
accordance with SSPC-SP6. Prime the area the same day as
cleaned.
Galvanized Steel: Solvent clean new galvanized metal in
accordance with SSPC-SP1 to remove oil and grease from
the surface. Pre-treat with a phosphoric acid solution or
a commercially-available etching solution. Galvanized
metal that has been passivated with chromates or silicates
may require brush blasting in accordance with SSPC-SP16
to remove these treatments. Rusty galvanizing requires a
minimum of Hand Tool Cleaning in accordance with
SSPC-SP2. Prime the area the same day as cleaned.
Shop-Primed Steel: As there is potential for many forms
of contamination during storage and transport, a thorough
cleaning is always recommended for shop-primed surfaces.
Paint exposed areas, i.e., where shop primer is abraded, with
the same material as used for shop priming to comply with
SSPC-PA 1 for touching up shop-primed surfaces.
Note: Assess the integrity of the shop primer prior to
application of subsequent coatings. Review all coatings
intended for the project and conrm the compatibility
between shop and eld-applied coatings.
This information is provided “as is” and no representations or warranties, either express or implied, of merchantability, tness for a particular purpose or of any other nature
are made with respect to this information or to any product referred to in this information. For SDS or to consult with a Behr Paint Company representative,
call 1-800-854-0133 Ext. 2 (U.S.A. only). ©2020 Behr Process Corporation, Santa Ana, CA 92705 U.S.A.
Revised 10/2020
1 of 2