Check the listing for details. Mad Dog Dura Last Primer. Condition: New. Listed at 32.99 USD. Dura-Last is the best exterior primer for everyday use on new and weathered projects. Use on all peeling paint surfaces. Dura-Last comes in a white base and helps projects last up to 20 years.For new, peeling or weathered surfaces. Dura-Last provides superior adhesion and beautiful hiding power. Ideal for the one coat of primer, single coat of top-coat job. Extends the life of top-coats for up to 20 years. Mad Dog Primer - Exterior Primer Overview Video will open in a new window Using the mobile app? Copy this link into your browser: FeaturesMad Dog Dura-Last helps paint last 2 to 4 times longer than traditional primersDura-Last provides superior adhesion and beautiful hiding powerExceptional durabilityProvides a stable surface for longest lasting top-coat life. Expect up to 20 yearsPrevents paint from peeling, chipping and crackingCoverage: 300 square feet per gallon