EIFS Repair 101: How to Patch Stucco with Fiberglass Mesh Like a Pro
Stucco and EIFS systems are incredibly durable, but cracks and surface damage can happen—especially in high-impact or moisture-prone areas. The good news? You can restore those surfaces efficiently using fiberglass mesh. In this guide, we’ll walk you through how to patch EIFS or stucco with fiberglass mesh for long-lasting, professional results.
1. When Do You Need a Fiberglass Mesh Patch?
Common causes of damage include:
- – Cracking due to foundation shift or temperature swings
- – Impact damage (hail, lawn equipment, etc.)
- – Moisture infiltration behind EIFS
Signs your stucco needs patching include:
- – Visible cracks >1/16″
- – Peeling or bubbling
Tip: Fiberglass mesh is ideal for reinforcing repairs and preventing cracks from spreading.
2. Tools & Materials Checklist
You’ll need:
- – Fiberglass mesh (choose standard or heavy-duty depending on surface stress)
- – EIFS base coat or stucco patch compound
- – Utility knife or mesh shears
- – Trowel
- – Sponge float
- – Bucket of clean water
3. Step-by-Step Patch Instructions
- Step 1: Prepare the Area
- – Clean away any dirt, loose stucco, or paint.
– Cut away damaged EIFS or delaminated sections.
– Sand edges smooth.
- Step 2: Cut the Fiberglass Mesh
- – Cut a patch that overlaps the damaged area by 2–3 inches on all sides.
– Round the corners to reduce edge peeling.
- Step 3: Apply Base Coat or Patch Compound
- – Spread a thin layer over the area using a trowel.
– While wet, embed the mesh directly into the coating.
– Smooth out from the center, removing air pockets.
- Step 4: Apply Second Coat
- – Let the first layer dry (typically 24 hrs).
– Apply a second, feathered coat over the mesh.
– Smooth with sponge float or trowel.
- Step 5: Finish & Paint
- – Once fully dry, sand lightly if needed.
– Prime and repaint to match existing finish.
4. Choosing the Right Mesh Weight
Standard Weight (4.5 oz): Best for cracks and cosmetic repair
Heavy-Duty (11 oz): Ideal for high-impact zones and corners
Conclusion
A cracked EIFS or stucco wall doesn’t mean a costly replacement. With the right tools and a bit of patience, you can restore it to a like-new finish using fiberglass mesh patching. If you need help choosing the right mesh or compound, the team at Rescom Products is happy to guide you.
Explore our full line of fiberglass mesh at rescomproducts.com.
