Maintaining EIFS/Synthetic Stucco Siding

What is EIFS?

EIFS is an Exterior Insulation and Finish System. It is also called “synthetic stucco”. It’s made of lightweight, two-inch thick polystyrene panels with an acrylic coating that mimics traditional stucco. Moisture that gets in through poorly caulked joints or surface punctures can get trapped and cause the framing and plywood sheathing underneath to rot, leading to costly repairs.


Check to See If Your Stucco is Real or EIFS

Lightly knock on the surface. EIFS sounds hollow while traditional stucco is solid. Press lightly on the surface. EIFS gives slightly while real stucco is very hard.


How to Maintain – Maintenance-free Siding

Yearly inspection is important to making sure seams are intact and the surface hasn’t been damaged. Always check after a windstorm as tree limbs may dent or pierce the siding. Woodpeckers can also create holes that will let water in. And you should never attach anything to this siding that punctures the surface, such as mailboxes, hose holders, street numbers or planter boxes.


Professional Installation for EIFS

EIFS is not a do-it-yourself type of project. Proper installation is critical to the siding’s performance.