diff --git a/bower.json b/bower.json
index c718b73..5c28346 100644
--- a/bower.json
+++ b/bower.json
@@ -13,7 +13,10 @@
   ],
   "main": "google-recaptcha.html",
   "dependencies": {
-    "polymer": "Polymer/polymer#^1.0.0"
+    "iron-form": "PolymerElements/iron-form#^1.0.9",
+    "polymer": "Polymer/polymer#^1.0.0",
+    "iron-form-element-behavior": "PolymerElements/iron-form-element-behavior#~1.0.4",
+    "iron-validatable-behavior": "PolymerElements/iron-validatable-behavior#~1.0.4"
   },
   "devDependencies": {
     "web-component-tester": "*",
diff --git a/demo/index.html b/demo/index.html
index b00056c..bb45c39 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -18,6 +18,7 @@
   </style>
   <script src="../../webcomponentsjs/webcomponents-lite.min.js"></script>
   <link rel="import" href="../google-recaptcha.html">
+  <link rel="import" href="../iron-form/iron-form.html">
   <script type="text/javascript">
     window.addEventListener('WebComponentsReady', function(e) {
       var rec = document.querySelector('google-recaptcha');
@@ -40,11 +41,27 @@
 <body>
   <p>Default re-captcha</p>
   <google-recaptcha sitekey="6LdRcP4SAAAAAJ4Dq1gXcD9AyhzuG77iz7E2Dmu4"></google-recaptcha>
+
+  <p>Event message (working with the first captcha)</p>
+  <p id="eventMessage"></p>
+
+  <hr>
+
   <p>Dark re-captcha</p>
   <google-recaptcha theme="dark" sitekey="6LdRcP4SAAAAAJ4Dq1gXcD9AyhzuG77iz7E2Dmu4"></google-recaptcha>
+
+  <hr>
+
   <p>Audio re-captcha</p>
   <google-recaptcha type="audio" sitekey="6LdRcP4SAAAAAJ4Dq1gXcD9AyhzuG77iz7E2Dmu4"></google-recaptcha>
-  <p>Event message (working with the first captcha)</p>
-  <p id="eventMessage"></p>
+
+  <hr>
+
+  <form is="iron-form" style="border: 1px solid #ccc; padding: 0 25px 25px;">
+    <h2>Demo within an iron-form</h2>
+    <google-recaptcha sitekey="6LdRcP4SAAAAAJ4Dq1gXcD9AyhzuG77iz7E2Dmu4"></google-recaptcha>
+    <div><button type="submit">Submit</button></div>
+  </form>
+
 </body>
 </html>
diff --git a/google-recaptcha.html b/google-recaptcha.html
index 671210b..91dbd17 100644
--- a/google-recaptcha.html
+++ b/google-recaptcha.html
@@ -4,6 +4,8 @@
  license that can be found in the LICENSE file.
 -->
 <link rel="import" href="../polymer/polymer.html">
+<link rel="import" href="../iron-form-element-behavior/iron-form-element-behavior.html">
+<link rel="import" href="../iron-validatable-behavior/iron-validatable-behavior.html">
 
 <!--
 Polymer element for Google reCAPTCHA
@@ -22,12 +24,18 @@
 @demo demo/index.html
 -->
 <dom-module id="google-recaptcha">
-  <style>
-    :host {
-      display: block;
-    }
-  </style>
-  <template><content></content></template>
+  <template>
+    <style>
+      :host {
+        display: inline-block;
+        padding: 2px 0 0 2px;
+      }
+      :host[invalid]:not([pristine]) {
+        border: 1px solid red;
+        border-radius: 3px;
+      }
+    </style>
+  </template>
 </dom-module>
 
 <script>
@@ -43,7 +51,38 @@
       _containerId:'',
       _captchaId:'',
 
+      behaviors: [
+        Polymer.IronFormElementBehavior,
+        Polymer.IronValidatableBehavior
+      ],
+
+      _getValidity: function () {
+        this.pristine = false;
+        return !this.invalid;
+      },
+
       properties: {
+        /**
+         * Whether a captcha in an iron-form is a required input.
+         */
+        required: {
+          type: Boolean,
+          reflectToAttribute: true,
+          value: true
+        },
+
+        invalid: {
+          type: Boolean,
+          reflectToAttribute: true,
+          value: true
+        },
+
+        pristine: {
+          type: Boolean,
+          reflectToAttribute: true,
+          value: true
+        },
+
         /**
          * The total time (in milliseconds) to wait for API loading
          */
@@ -95,10 +134,10 @@
       },
 
       observers: [
-        '_validate(theme, type, timeout)'
+        '_checkOptions(theme, type, timeout)'
       ],
 
-      _validate:function () {
+      _checkOptions: function () {
         if(this.theme!='dark' && this.theme!='light'){
           this.theme='light';
         }
@@ -135,7 +174,6 @@
         return (S4()+S4()+"-"+S4()+"-"+S4()+"-"+S4()+"-"+S4()+S4()+S4());
       },
       ready: function () {
-
       },
       attached: function () {
         if(this.sitekey===''){
@@ -217,6 +255,8 @@
        *  @param {String} response response to store
        */
       _responseHandler: function (response) {
+        this.pristine = false;
+        this.invalid = false;
         this.response=response;
         this.fire('captcha-response',{response:response});
       },
@@ -232,6 +272,8 @@
        * The `expiredHandler` method fires the captcha-expired event.
        */
       _expiredHandler: function () {
+        this.pristine = false;
+        this.invalid = true;
         this.fire('captcha-expired');
       }
     });
