How To Avoid Oil Canning

How To Avoid Oil Canning

Oil canning is a common problem in metal roofing or siding panels, where the metal surface appears wavy, distorted, or “puckered.” It’s mostly an aesthetic issue but can be frustrating if you want a smooth, clean look.

Here’s how to avoid oil canning in metal panels:

🏗️ How to Avoid Oil Canning

✅ 1. Choose Quality Materials

• Use high-quality, thicker gauge metal panels that are less prone to flexing.
• Thicker metals (like 24 or 22 gauge) resist oil canning better than thinner ones.

✅ 2. Proper Panel Design

• Panels with stiffening ribs or strakes provide extra rigidity and reduce oil canning.
• Avoid wide, flat panels without any reinforcement.

✅ 3. Correct Panel Installation

• Follow manufacturer guidelines precisely.
• Use the right fasteners and spacing.
• Avoid over-tightening screws—this can warp the panels.
• Allow for thermal expansion and contraction.

✅ 4. Use a Flat, Stable Substrate

• Install panels over a flat, level surface.
• Uneven decking or framing can cause panels to deform.

✅ 5. Avoid Excessive Handling or Bending

• Minimize bending panels during installation.
• Use proper tools and techniques to prevent warping.

✅ 6. Control Temperature During Installation

• Install panels at recommended temperatures.
• Metal expands/contracts with temperature changes, affecting flatness.

✅ 7. Consider Panel Coatings and Finishes

• Some coatings help stiffen metal panels and reduce oil canning.
• Consult your manufacturer about options.

✅ 8. Work with Experienced Installers

• Skilled professionals understand how to minimize oil canning.
• Improper installation is a major cause.

🧩 Quick Summary

Tip	Why It Helps
Use thicker metal panels	More rigid, less prone to flexing
Choose panels with ribs	Adds structural strength
Follow install guidelines	Avoids warping & stress points
Flat, stable substrate	Prevents uneven pressure
Avoid over-tightening	Prevents panel distortion
Install at proper temp	Controls expansion/contraction