diff --git a/src/assets/style/primereact.css b/src/assets/style/primereact.css
index ccd9810a05..c3c30aa8c3 100644
--- a/src/assets/style/primereact.css
+++ b/src/assets/style/primereact.css
@@ -76,3 +76,4 @@
 @import '../../components/treeselect/TreeSelect.css';
 @import '../../components/virtualscroller/VirtualScroller.css';
 @import '../../components/speeddial/SpeedDial.css';
+@import '../../components/blockui/BlockUI.css';
diff --git a/src/components/blockui/BlockUI.css b/src/components/blockui/BlockUI.css
new file mode 100644
index 0000000000..4c72858af0
--- /dev/null
+++ b/src/components/blockui/BlockUI.css
@@ -0,0 +1,30 @@
+.p-blockui-container {
+    position: relative;
+}
+
+.p-blockui {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background-color: transparent;
+    opacity: 1;
+    transition-property: background-color, opacity;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.p-blockui.p-component-overlay {
+    position: absolute;
+}
+
+.p-blockui-document.p-component-overlay {
+    position: fixed;
+}
+
+.p-blockui.p-blockui-leave.p-component-overlay {
+    opacity: 0;
+    background-color: transparent;
+}
diff --git a/src/components/blockui/BlockUI.d.ts b/src/components/blockui/BlockUI.d.ts
new file mode 100644
index 0000000000..2ff5bd0781
--- /dev/null
+++ b/src/components/blockui/BlockUI.d.ts
@@ -0,0 +1,18 @@
+import * as React from 'react';
+
+export interface BlockUIProps {
+    id?: string;
+    blocked?: boolean;
+    fullScreen?: boolean;
+    baseZIndex?: number;
+    autoZIndex?: boolean;
+    style?: object;
+    className?: string;
+    onBlocked?(): void;
+    onUnblocked?(): void;
+}
+
+export declare class BlockUI extends React.Component<BlockUIProps, any> {
+    public block(): void;
+    public unblock(): void;
+}
diff --git a/src/components/blockui/BlockUI.js b/src/components/blockui/BlockUI.js
new file mode 100644
index 0000000000..fda7f1d18d
--- /dev/null
+++ b/src/components/blockui/BlockUI.js
@@ -0,0 +1,130 @@
+import React, { Component } from 'react';
+import PropTypes from 'prop-types';
+import { classNames, DomHandler, ObjectUtils, ZIndexUtils } from '../utils/Utils';
+import { Portal } from '../portal/Portal';
+
+export class BlockUI extends Component {
+
+    static defaultProps = {
+        id: null,
+        blocked: false,
+        fullScreen: false,
+        baseZIndex: 0,
+        autoZIndex: true,
+        style: null,
+        className: null,
+        template: null,
+        onBlocked: null,
+        onUnblocked: null
+    };
+
+    static propTypes = {
+        id: PropTypes.string,
+        blocked: PropTypes.bool,
+        fullScreen: PropTypes.bool,
+        baseZIndex: PropTypes.number,
+        autoZIndex: PropTypes.bool,
+        style: PropTypes.object,
+        className: PropTypes.string,
+        template: PropTypes.any,
+        onBlocked: PropTypes.func,
+        onUnblocked: PropTypes.func
+    };
+
+    constructor(props) {
+        super(props);
+
+        this.state = {
+            visible: props.blocked
+        };
+
+        this.block = this.block.bind(this);
+        this.unblock = this.unblock.bind(this);
+        this.onPortalMounted = this.onPortalMounted.bind(this);
+    }
+
+    block() {
+        this.setState({ visible: true });
+    }
+
+    unblock() {
+        DomHandler.addClass(this.mask, 'p-blockui-leave');
+        this.mask.addEventListener('transitionend', () => {
+            ZIndexUtils.clear(this.mask);
+            this.setState({ visible: false }, () => {
+                this.props.fullScreen && DomHandler.removeClass(document.body, 'p-overflow-hidden');
+                this.props.onUnblocked && this.props.onUnblocked();
+            });
+        });
+    }
+
+    onPortalMounted() {
+        if (this.props.fullScreen) {
+            DomHandler.addClass(document.body, 'p-overflow-hidden');
+            document.activeElement.blur();
+        }
+
+        if (this.mask) {
+            setTimeout(() => {
+                DomHandler.addClass(this.mask, 'p-component-overlay');
+            }, 1);
+        }
+
+        if (this.props.autoZIndex) {
+            ZIndexUtils.set(this.props.fullScreen ? 'modal' : 'overlay', this.mask, this.props.baseZIndex);
+        }
+
+        this.props.onBlocked && this.props.onBlocked();
+    }
+
+    renderMask() {
+        if (this.state.visible) {
+            const className = classNames('p-blockui', {
+                'p-blockui-document': this.props.fullScreen
+            }, this.props.className);
+            const content = this.props.template ? ObjectUtils.getJSXElement(this.props.template, this.props) : null;
+            const mask = (
+                <div ref={(el) => this.mask = el} className={className} style={this.props.style}>
+                    {content}
+                </div>
+            );
+
+            return (
+                <Portal element={mask} appendTo={this.props.fullScreen ? document.body : 'self'} onMounted={this.onPortalMounted} />
+            );
+        }
+
+        return null;
+    }
+
+    componentDidMount() {
+        if (this.state.visible) {
+            this.block();
+        }
+    }
+
+    componentDidUpdate(prevProps, prevState) {
+        if (prevProps.blocked !== this.props.blocked) {
+            this.props.blocked ? this.block() : this.unblock();
+        }
+    }
+
+    componentWillUnmount() {
+        if (this.props.fullScreen) {
+            DomHandler.removeClass(document.body, 'p-overflow-hidden');
+        }
+
+        ZIndexUtils.clear(this.mask);
+    }
+
+    render() {
+        const mask = this.renderMask();
+
+        return (
+            <div ref={(el) => this.container = el} id={this.props.id} className="p-blockui-container">
+                {this.props.children}
+                {mask}
+            </div>
+        );
+    }
+}
diff --git a/src/components/primereact.all.js b/src/components/primereact.all.js
index 2383e2b872..ecfb9eca2b 100644
--- a/src/components/primereact.all.js
+++ b/src/components/primereact.all.js
@@ -94,3 +94,4 @@ export * from './tristatecheckbox/TriStateCheckbox';
 export * from './utils/Utils';
 export * from './virtualscroller/VirtualScroller';
 export * from './speeddial/SpeedDial';
+export * from './blockui/BlockUI';