diff --git a/iron-autogrow-textarea.html b/iron-autogrow-textarea.html
index f46bc2d..20c8e9c 100644
--- a/iron-autogrow-textarea.html
+++ b/iron-autogrow-textarea.html
@@ -341,7 +341,9 @@
       }
 
       this.bindValue = value;
-      this.$.mirror.innerHTML = this._valueForMirror();
+      this.debounce('delayMirror', function() {
+        this.$.mirror.innerHTML = this._valueForMirror();
+      }.bind(this), 500);
 
       // Manually notify because we don't want to notify until after setting value.
       this.fire('bind-value-changed', {value: this.bindValue});