Coating Adhesion Test — RoofCoatings.com
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Coating Adhesion Test

Why Test for Coating Adhesion?

The common methods of adhesion testing are performed with a knife, a pull-off adhesion tester or tensile test with fabric. To perform adhesion tests in the field, we recommend the tensile test with fabric. The initial adhesion measured in this test does not mean that long term adhesion is assured but it does provide a strong indication of adhesion performance.

How Much Adhesion Is Enough?

The more adhesion, the better. Since this is a qualitative test, a frame of reference is valuable, if possible. For instance, measure the adhesion of a roof coating to a substrate with and without a primer; or compare two different cleaning methods, or compare two or more different products (perhaps a polyurethane and an acrylic). After any test, determine if the bond failure was adhesive (between coating and substrate) or cohesive (within the coating film).

Cleaning Substrate Prior to Coating Adhesion Test

Clean the test area and let dry. Do not perform a coating adhesion test on a rusted surface without rust treatment. Prepare a big enough area to conduct several tests using different recommended coating combinations. Roof coating alone, roof coating with primer, primer alone.

Installing the Test Strips

Apply 15 wet mils of roof coating on test surface and embed a 1"x6" swatch of polyester fabric into it. Allow 1" of the fabric to hang free. Completely saturate with another 15 wet mils of roof coating. Allow test patch to dry and cure for at least 3 days. (4 to 7 days recommended)

Doing the Pull Test

Test for roof coating adhesion by pulling the fabric at a 90° angle to the substrate surface. There must be a minimum of two pounds of "pull strength" for the coating adhesion to be considered acceptable. Some roof coating should remain on the substrate.

FAQ

RETURNS

What is your Refund Policy?

We offer a 15-day return policy. You have 15 days from the date you receive your item to request a return.

Eligibility for Returns:The item must be in the same condition as when you received it and in its original packaging.
You will need to provide the receipt or proof of purchase.

How to Initiate a Return: Contact us at support@roofcoatings.com to start the return process.
Once your return is accepted, we will provide you with a return shipping label and instructions on how and where to send your package.
Returns must be sent to the warehouse/manufacturing location where they were initially shipped.

Important: Do not send items back without contacting us first. Returns sent without prior approval will not be accepted. For any return-related questions, feel free to contact us at support@roofcoatings.com.

What items are non-returnable?

We do not accept returns for hazardous materials.
Sale items and gift cards are also non-returnable.If you have questions or concerns about a specific item, please contact us.

How do you exchange items?

The quickest way to get what you want is to return the item you have. Once the return is accepted, make a separate purchase for the new item.

When will I receive my refund?

Once we receive and inspect your return, we will notify you of the approval status. If approved, you will be automatically refunded via your original payment method within ten business days. Please note that it may take some time for your bank or credit card company to process and post the refund. Refunds do not include the cost of shipping and handling.

WARRANTY

What is the policy for damages?

Please inspect your order upon reception. If you receive a defective, damaged, or incorrect item, contact us immediately so we can evaluate the issue and make it right.

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