Hi Don,
Thank you for reviewing Behr Low-Lustre Sealer. I'm very sorry to hear about the milky issue experienced, as it certainly isn't what we want our customers to go through. I understand this must be disappointing.
If only one coat has been applied, a second coat can be tested in a small area. The second coat may reactivate the first coat so that trapped moisture can escape. Alternatively, you can try wiping a small area with denatured alcohol, as this can also help release trapped moisture. Applying this product during the recommended weather conditions (50-80F; below 50% humidity) and out of direct sunlight is imperative for optimal results.
Please contact Behr's Customer Care Department for further assistance with this matter. We'd love to find a way to help.
Kindest regards,
Doris