Exterior Contactplus Bonding Primer

A problem-solving, quartz and glass fiber-filled mineral primer for all types of masonry. It improves adhesion on hard to paint surfaces.

  • $136.00 Gallon*
  • $542.00 4 Gallon*

ContactPlus Bonding Primer is a sol silicate primer designed to tenaciously bond to both new and old masonry of all types. It provides a uniform sandy texture and fills in small hairline cracks, pits, and voids, up to 1/32 inch, which improves both the appearance and weathering performance of paints and Limewash.

ContactPlus is also extremely vapor-permeable and part of a completely breathable mineral paint system.

Color: White

Ideal For All Types Of Masonry, Not Just Brick

Introducing ContactPlus Bonding Primer – your essential first step for preparing all varieties of masonry for a flawless finish.

ContactPlus is specially formulated to enhance adhesion while filling small gaps, crevices, and imperfections. Its unique blend of sol silicate binder, quartz granules, glass fibers, and white pigment effectively fills cracks up to 1/32”, delivering a beautiful “sandy” texture that revitalizes aged or weather-worn surfaces. This subtle texture, akin to 100-grit sandpaper, helps diffuse sunlight on larger areas, elevating the overall appearance.

Using ContactPlus is not just a prep step; it’s a swift, straightforward solution to achieve the stunning results you desire, whether you’re applying Mineral Masonry Paint or European Limewash as the final touch on your home.

Ensure your hard work looks its best!

At Left: Image shows actual size of ContactPlus Bonding Primer texture when rolled onto a smooth surface with a ½” nap roller cover.

Mineral Bonding Primer is a sol silicate lightly textured mineral based primer designed to prepare exterior new and previously painted masonry surfaces and glossy or tough to paint surfaces for painting with mineral paints. It provides tenacious adhesion and is ideal when multiple types of surfaces and textures are present. The sand texture minimizes the appearance of small surface defects and tends to bring variable textures and surfaces into a more uniform visual appearance. It provides added adhesion when renovating or coating sound acrylic and silicone resin-based coatings. Use on new and previously painted brick, stone, stucco and concrete fiber cement siding. It is required when using Limewash over existing acrylic/latex painted surfaces, but is not required for use with Mineral Masonry Paint.

Coverage will vary depending on the type of surface, porosity and texture as well as application methods, equipment and workmanship. When painting brick, we suggest adding 25% to your area to account for painting all edges of bricks.

Quart      50—65 square feet

Gallon     225—250 square feet

4 Gallon  900—1000 square feet

You will need an extra bucket, painter’s tape, drop cloths a paint roller with a 3/8” or ½” cover, paint brush, stir stick, paint tray and liner, ladder if necessary, dampened cloth to clean up spatters, latex gloves and eye protection.

Previously painted surfaces should be clean and free of loose or peeling paint, dirt, grease, mold and mildew or other household grime and the surface should by dry. New brick, stone, stucco and fiber cement siding should be dry, sound and free of dirt, dust or other contaminants. One coat of primer is required most surfaces. Deeply textured or extremely porous surfaces may require two coats.

Stir Primer until smooth and homogenous. Use a paint brush to cut in around edges and corners then use a paint roller to apply primer to remaining area. It is best to roll into damp cut in paint to avoid creating a “ridge” between dry and wet primer. Apply primer in an even coat with no runs, sags or holidays. Avoid drips, spills and painting adjacent areas. Clean up spills immediately with a damp cloth as it will be difficult to remove once dried. Clean tools with soap and warm water.

Dry to touch: 2—4 hours at 70°F and 50% R.H.

Recoat: 12 hours

KEIM LIMITED PRODUCT WARRANTY

KEIM Mineral Coatings of America, Inc. (“KMC”) warrants interior and exterior coatings purchased at https://keim-usa.com/ (the “Product”) to be free from defects in workmanship. If the Product, when applied according to paint specifications and label instructions, peels, blisters, or substantially fades from exposure to sunlight within 20 years from the date of purchase, KMC shall, at its own discretion, replace the defective Product free of charge. Such replacement is subject to verification of the defect or malfunction and presentation of proof of purchase of the Product to KMC.

This Limited Warranty does not apply to any defect or damage that is caused by (1) negligence, accident, abuse, or misuse of the Product; (2) improper surface preparation or any defects or shortcoming of the substrate, to which the Product is applied; (3) poor or improper storage, transportation, application, use, care or maintenance of the Product; (4) normal wear and tear or unauthorized use of the Product; (5) unauthorized application of, or modification to, the Product; and (6) unsatisfactory color due to a personal preference. This Limited Warranty may not be transferred or assigned. This is your sole remedy under this Warranty.

KMC’S ENTIRE LIABILITY SHALL BE LIMITED EXCLUSIVELY TO PROVIDING REPLACEMENT PRODUCT. THIS WARRANTY EXCLUDES (1) LABOR AND COSTS ASSOCIATED WITH LABOR FOR THE APPLICATION OR REMOVAL OF ANY PRODUCT AND (2) ANY INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

KEIM RETURN POLICY

Place Orders

Orders can be placed with our office in Charlotte NC by emailing your order information to orders@keim.com.

NO RETURNS FOR MIXED PAINTS/ COATINGS or OTHER COLORED AND SPECIAL ORDER PRODUCTS
We want you to be completely satisfied with your KEIM Mineral Coatings of America, Inc. products. However, please note that all sales are final for tinted, custom-mixed products, or opened products; once your order is placed, no adjustments can be made to quantities or colors. Unopened packages of untinted white and clear products may be returned for a 25% restocking fee and shipped freight prepaid to Keim. To receive a return authorization, email us at orders@keim.com and include your original order number and the number of items you seek to return. While our employees can provide estimated consumption quantities, these are general guidelines and don’t account for specific project details like surface complexity or application methods. It’s your responsibility as the buyer to calculate precise product consumption, and we highly recommend performing a trial application or observing the first day’s use to ensure you order the correct amount. By placing an order, you agree to these terms.

RETURNS FOR OTHER PRODUCTS (not mixed or colored)

  1. Products must be in like new condition.
  2. Only products that have been stored in climate-controlled conditions may be considered for return. No refunds will be made unless prior return authorization is obtained (Contact your KEIM Product Specialist for authorization).
  3. No returns will be accepted unless the return is made within 90 days of the invoice date.
  4. Returns and refunds will be made on off the shelf items only after the Product specialist who handles the project or area has approved the return.
  5. There is a 25% restock fee for all returned products.
  6. The customer is responsible for all shipping costs including the return shipping.

RETURNS WHEN IT IS A KEIM ERROR (See Claims Below)

  1. KEIM will accept all returns resulting from our error whether or not it was a mixed product or other product.
  2. KEIM will arrange and pay for the return shipping.
  3. Contact KEIM upon receipt of your order to report any error.

Claims: (Contact your Keim product specialist for authorization)

Errors in packaging or orders must be reported upon receipt of product in order to correct the error properly. Errors reported after more than 10 days from the date of receipt will not be considered.

Warranty:

1 year unless otherwise stated


Need help?

Contact us at orders@keim.com for questions related to refunds and returns

 

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MADE JUST FOR YOU

At Keim, we’re redefining the paint industry with meticulously handcrafted products tailored specifically for you. Made with care in North Carolina, our paints are designed to reflect your unique vision, ensuring quality that stands out from the ordinary.

CHOOSE THE PERFECT COLOR
Explore our thoughtfully curated palette featuring beautiful earthen mineral shades complemented   by pristine whites, intricate neutrals, and bold, deep hues. Enjoy FREE COLOR MATCHING to ensure your selections are just right!
THOUGHTFUL PACKAGING

Our commitment to circular design and low impact solutions extends to our packaging too.  Our plastic pails contain up to 100% recycled plastic and are fully recyclable, as is all of our packaging.  

CONNECT WITH US

At Keim, we understand mineral and lime paints might be new to you. We’re here to help you choose the perfect finish! While we can’t always take calls, our team is available via email– we’re ready to assist you!

INNOVATION & HERITAGE

Buying from a source you can trust is vitally important, and our almost 150 year history can give you peace of mind.  Born in Germany in 1878, Keim paints protect some of the world’s most iconic historic landmarks.

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We always recommend two coats for maximum protection and durability.

IN HARMONY WITH NATURE AND CLIMATE

At KEIM, we view environmental protection as a promising opportunity for innovation and growth. Our deep commitment to sustainability drives us to develop solutions that seamlessly integrate with the natural world. Every detail of our sourcing, product design, production, packaging, and distribution processes is meticulously crafted with environmental stewardship at the forefront.

LOWERING OUR IMPACT BY CONSERVING RESOURCES

We are dedicated to creating sustainable products that minimize our environmental footprint. We recognize that sustained economic activity hinges upon the careful management of our natural resources. Emulating nature, we strive to utilize resources in a closed-loop system, ensuring maximum efficiency and sustainability. Our production facilities have been run on renewable solar power for many years, and we recycle and reuse every drop of water used in the crafting of our mineral paints, stains, and limewash. 

MINERALS PROVIDE AN EXCELLENT ECO-PROFILE

Our focus on low-impact construction and energy efficiency emphasizes the use of durable and non-toxic building materials, with safe disposal practices integrated into the circular economy. KEIM mineral paints stand out as the ideal choice, boasting exceptional properties throughout their lifecycle. Crafted from renewable, responsibly sourced materials, our products are made with minimal environmental impact. 
They are designed to endure for decades with simple maintenance, and their disposal requires no additional processing, aligning perfectly with sustainable practices. 

By choosing KEIM, you’re not just making a choice for quality, but also for a healthier planet.