diff --git a/CHANGES.md b/CHANGES.md
index 56dd7065..031bb332 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,7 @@
+**Fixed:**
+
+* Fix `clean` commands in paths with spaces [[#181](https://github.com/insin/nwb/issues/181)]
+
 **Changed:**
 
 * The default build for a React component demo app now supports use of a `demo/public/` directory for static content.
diff --git a/package.json b/package.json
index f91b1eea..ec87eff5 100644
--- a/package.json
+++ b/package.json
@@ -121,6 +121,7 @@
     "eslint-config-jonnybuchanan": "4.7.0",
     "eventsource": "0.2.1",
     "nyc": "10.0.0",
+    "run-series": "1.1.4",
     "shelljs": "0.7.5",
     "tree-kill": "1.1.0"
   },
diff --git a/src/commands/build-demo.js b/src/commands/build-demo.js
index c5f09a7b..0088eecd 100644
--- a/src/commands/build-demo.js
+++ b/src/commands/build-demo.js
@@ -1,10 +1,9 @@
 import path from 'path'
 
 import glob from 'glob'
-import ora from 'ora'
+import runSeries from 'run-series'
 
 import webpackBuild from '../webpackBuild'
-import {logBuildResults} from '../webpackUtils'
 import cleanDemo from './clean-demo'
 
 /**
@@ -43,15 +42,8 @@ export default function buildDemo(args, cb) {
     config.plugins.copy = [{from: path.resolve('demo/public/'), to: dist}]
   }
 
-  cleanDemo(args)
-
-  let spinner = ora('Building demo').start()
-  webpackBuild(args, config, (err, stats) => {
-    if (err) {
-      spinner.fail()
-      return cb(err)
-    }
-    logBuildResults(stats, spinner)
-    cb()
-  })
+  runSeries([
+    (cb) => cleanDemo(args, cb),
+    (cb) => webpackBuild('demo', args, config, cb),
+  ], cb)
 }
diff --git a/src/commands/build-inferno-app.js b/src/commands/build-inferno-app.js
index 8c8af9ab..55efb6ed 100644
--- a/src/commands/build-inferno-app.js
+++ b/src/commands/build-inferno-app.js
@@ -1,11 +1,10 @@
 import path from 'path'
 
 import glob from 'glob'
-import ora from 'ora'
+import runSeries from 'run-series'
 
 import {getDefaultHTMLConfig} from '../appConfig'
 import webpackBuild from '../webpackBuild'
-import {logBuildResults} from '../webpackUtils'
 import cleanApp from './clean-app'
 
 // Using a config function as webpackBuild() sets NODE_ENV to production if it
@@ -52,15 +51,8 @@ function buildConfig(args) {
 export default function buildInfernoApp(args, cb) {
   let dist = args._[2] || 'dist'
 
-  cleanApp({_: ['clean-app', dist]})
-
-  let spinner = ora(`Building Inferno app`).start()
-  webpackBuild(args, buildConfig, (err, stats) => {
-    if (err) {
-      spinner.fail()
-      return cb(err)
-    }
-    logBuildResults(stats, spinner)
-    cb()
-  })
+  runSeries([
+    (cb) => cleanApp({_: ['clean-app', dist]}, cb),
+    (cb) => webpackBuild('Inferno app', args, buildConfig, cb),
+  ], cb)
 }
diff --git a/src/commands/build-preact-app.js b/src/commands/build-preact-app.js
index 4f113b3d..2d765fd1 100644
--- a/src/commands/build-preact-app.js
+++ b/src/commands/build-preact-app.js
@@ -1,11 +1,10 @@
 import path from 'path'
 
 import glob from 'glob'
-import ora from 'ora'
+import runSeries from 'run-series'
 
 import {getDefaultHTMLConfig} from '../appConfig'
 import webpackBuild from '../webpackBuild'
-import {logBuildResults} from '../webpackUtils'
 import cleanApp from './clean-app'
 
 // Using a config function as webpackBuild() sets NODE_ENV to production if it
@@ -52,15 +51,8 @@ function buildConfig(args) {
 export default function buildPreactApp(args, cb) {
   let dist = args._[2] || 'dist'
 
-  cleanApp({_: ['clean-app', dist]})
-
-  let spinner = ora(`Building Preact app`).start()
-  webpackBuild(args, buildConfig, (err, stats) => {
-    if (err) {
-      spinner.fail()
-      return cb(err)
-    }
-    logBuildResults(stats, spinner)
-    cb()
-  })
+  runSeries([
+    (cb) => cleanApp({_: ['clean-app', dist]}, cb),
+    (cb) => webpackBuild('Preact app', args, buildConfig, cb),
+  ], cb)
 }
diff --git a/src/commands/build-react-app.js b/src/commands/build-react-app.js
index 56af61e7..30606a7a 100644
--- a/src/commands/build-react-app.js
+++ b/src/commands/build-react-app.js
@@ -1,11 +1,10 @@
 import path from 'path'
 
 import glob from 'glob'
-import ora from 'ora'
+import runSeries from 'run-series'
 
 import {getDefaultHTMLConfig} from '../appConfig'
 import webpackBuild from '../webpackBuild'
-import {logBuildResults} from '../webpackUtils'
 import cleanApp from './clean-app'
 
 // Using a config function as webpackBuild() sets NODE_ENV to production if it
@@ -73,19 +72,12 @@ function buildConfig(args) {
 export default function buildReactApp(args, cb) {
   let dist = args._[2] || 'dist'
 
-  cleanApp({_: ['clean-app', dist]})
-
   let library = 'React'
   if (args.inferno) library = 'Inferno (React compat)'
   else if (args.preact) library = 'Preact (React compat)'
 
-  let spinner = ora(`Building ${library} app`).start()
-  webpackBuild(args, buildConfig, (err, stats) => {
-    if (err) {
-      spinner.fail()
-      return cb(err)
-    }
-    logBuildResults(stats, spinner)
-    cb()
-  })
+  runSeries([
+    (cb) => cleanApp({_: ['clean-app', dist]}, cb),
+    (cb) => webpackBuild(`${library} app`, args, buildConfig, cb),
+  ], cb)
 }
diff --git a/src/commands/build-react-component.js b/src/commands/build-react-component.js
index 43022666..3d5e4a54 100644
--- a/src/commands/build-react-component.js
+++ b/src/commands/build-react-component.js
@@ -1,4 +1,5 @@
 import glob from 'glob'
+import runSeries from 'run-series'
 
 import moduleBuild from '../moduleBuild'
 import buildDemo from './build-demo'
@@ -32,14 +33,12 @@ export default function buildModule(args, cb) {
     }
   }
 
-  moduleBuild(args, config, (err) => {
-    if (err) return cb(err)
-    // Disable demo build with --no-demo or --no-demo-build
-    if (args.demo === false ||
-        args['demo-build'] === false ||
-        glob.sync('demo/').length === 0) {
-      return cb(null)
-    }
-    buildDemo(args, cb)
-  })
+  let tasks = [(cb) => moduleBuild(args, config, cb)]
+  // Disable demo build with --no-demo or --no-demo-build
+  if (args.demo !== false &&
+      args['demo-build'] !== false &&
+      glob.sync('demo/').length !== 0) {
+    tasks.push((cb) => buildDemo(args, cb))
+  }
+  runSeries(tasks, cb)
 }
diff --git a/src/commands/build-react.js b/src/commands/build-react.js
index 36a73250..173639a5 100644
--- a/src/commands/build-react.js
+++ b/src/commands/build-react.js
@@ -1,10 +1,9 @@
 import path from 'path'
 
-import ora from 'ora'
+import runSeries from 'run-series'
 
 import {UserError} from '../errors'
 import webpackBuild from '../webpackBuild'
-import {logBuildResults} from '../webpackUtils'
 import cleanApp from './clean-app'
 
 // Using a config function as webpackBuild() sets NODE_ENV to production if it
@@ -77,19 +76,12 @@ export default function buildReact(args, cb) {
 
   let dist = args._[2] || 'dist'
 
-  cleanApp({_: ['clean-app', dist]})
-
   let library = 'React'
   if (args.inferno) library = 'Inferno (React compat)'
   else if (args.preact) library = 'Preact (React compat)'
 
-  let spinner = ora(`Building ${library} app`).start()
-  webpackBuild(args, buildConfig, (err, stats) => {
-    if (err) {
-      spinner.fail()
-      return cb(err)
-    }
-    logBuildResults(stats, spinner)
-    cb()
-  })
+  runSeries([
+    (cb) => cleanApp({_: ['clean-app', dist]}, cb),
+    (cb) => webpackBuild(`${library} app`, args, buildConfig, cb),
+  ], cb)
 }
diff --git a/src/commands/build-web-app.js b/src/commands/build-web-app.js
index 5ff9ba7a..cccb822c 100644
--- a/src/commands/build-web-app.js
+++ b/src/commands/build-web-app.js
@@ -1,11 +1,10 @@
 import path from 'path'
 
 import glob from 'glob'
-import ora from 'ora'
+import runSeries from 'run-series'
 
 import {getDefaultHTMLConfig} from '../appConfig'
 import webpackBuild from '../webpackBuild'
-import {logBuildResults} from '../webpackUtils'
 import cleanApp from './clean-app'
 
 // Using a config function as webpackBuild() sets NODE_ENV to production if it
@@ -51,15 +50,8 @@ function buildConfig(args) {
 export default function buildWebApp(args, cb) {
   let dist = args._[2] || 'dist'
 
-  cleanApp({_: ['clean-app', dist]})
-
-  let spinner = ora('Building app').start()
-  webpackBuild(args, buildConfig, (err, stats) => {
-    if (err) {
-      spinner.fail()
-      return cb(err)
-    }
-    logBuildResults(stats, spinner)
-    cb()
-  })
+  runSeries([
+    (cb) => cleanApp({_: ['clean-app', dist]}, cb),
+    (cb) => webpackBuild(`app`, args, buildConfig, cb),
+  ], cb)
 }
diff --git a/src/commands/clean-app.js b/src/commands/clean-app.js
index 93045eb6..65ed32f8 100644
--- a/src/commands/clean-app.js
+++ b/src/commands/clean-app.js
@@ -1,17 +1,6 @@
-import exec from '../exec'
+import {clean} from '../utils'
 
-import ora from 'ora'
-
-export default function cleanApp(args) {
+export default function cleanApp(args, cb) {
   let dist = args._[1] || 'dist'
-
-  let spinner = ora('Cleaning app').start()
-  try {
-    exec('rimraf', ['coverage', dist])
-    spinner.succeed()
-  }
-  catch (err) {
-    spinner.fail()
-    throw err
-  }
+  clean('app', ['coverage', dist], cb)
 }
diff --git a/src/commands/clean-demo.js b/src/commands/clean-demo.js
index 8dc32fcf..95c41217 100644
--- a/src/commands/clean-demo.js
+++ b/src/commands/clean-demo.js
@@ -1,15 +1,5 @@
-import exec from '../exec'
+import {clean} from '../utils'
 
-import ora from 'ora'
-
-export default function cleanModule(args) {
-  let spinner = ora('Cleaning demo').start()
-  try {
-    exec('rimraf', ['demo/dist'])
-    spinner.succeed()
-  }
-  catch (err) {
-    spinner.fail()
-    throw err
-  }
+export default function cleanDemo(args, cb) {
+  clean('demo', ['demo/dist'], cb)
 }
diff --git a/src/commands/clean-module.js b/src/commands/clean-module.js
index 1a7ced5b..deb207b9 100644
--- a/src/commands/clean-module.js
+++ b/src/commands/clean-module.js
@@ -1,15 +1,5 @@
-import exec from '../exec'
+import {clean} from '../utils'
 
-import ora from 'ora'
-
-export default function cleanModule(args) {
-  let spinner = ora('Cleaning module').start()
-  try {
-    exec('rimraf', ['coverage', 'es', 'lib', 'umd'])
-    spinner.succeed()
-  }
-  catch (err) {
-    spinner.fail()
-    throw err
-  }
+export default function cleanModule(args, cb) {
+  clean('module', ['coverage', 'es', 'lib', 'umd'], cb)
 }
diff --git a/src/commands/clean.js b/src/commands/clean.js
index 89309872..2914782e 100644
--- a/src/commands/clean.js
+++ b/src/commands/clean.js
@@ -13,7 +13,7 @@ const CLEAN_COMMANDS = {
 /**
  * Generic clean command, invokes the appropriate project type-specific command.
  */
-export default function clean(args) {
+export default function clean(args, cb) {
   let userConfig = getUserConfig(args, {required: true})
-  CLEAN_COMMANDS[userConfig.type](args)
+  CLEAN_COMMANDS[userConfig.type](args, cb)
 }
diff --git a/src/moduleBuild.js b/src/moduleBuild.js
index feaa67c1..053f00ae 100644
--- a/src/moduleBuild.js
+++ b/src/moduleBuild.js
@@ -3,7 +3,7 @@ import path from 'path'
 
 import glob from 'glob'
 import ora from 'ora'
-import temp from 'temp'
+import runSeries from 'run-series'
 import merge from 'webpack-merge'
 
 import cleanModule from './commands/clean-module'
@@ -27,9 +27,9 @@ const DEFAULT_BABEL_IGNORE_CONFIG = [
 ]
 
 /**
- * Runs Babel with generated config written to a temporary .babelrc.
+ * Run Babel with generated config written to a temporary .babelrc.
  */
-function runBabel({copyFiles, outDir, src}, buildBabelConfig, userBabelConfig) {
+function runBabel(name, {copyFiles, outDir, src}, buildBabelConfig, userBabelConfig, cb) {
   let babelConfig = createBabelConfig(buildBabelConfig, userBabelConfig)
   babelConfig.ignore = DEFAULT_BABEL_IGNORE_CONFIG
 
@@ -40,71 +40,28 @@ function runBabel({copyFiles, outDir, src}, buildBabelConfig, userBabelConfig) {
 
   debug('babel config: %s', deepToString(babelConfig))
 
-  fs.writeFileSync('.babelrc', JSON.stringify(babelConfig, null, 2))
+  let spinner = ora(`Creating ${name} build`).start()
   try {
+    fs.writeFileSync('.babelrc', JSON.stringify(babelConfig, null, 2))
     exec('babel', babelArgs)
-  }
-  finally {
-    fs.unlinkSync('.babelrc')
-  }
-}
-
-export default function moduleBuild(args, buildConfig = {}, cb) {
-  // XXX Babel doesn't support passing the path to a babelrc file any more
-  if (glob.sync('.babelrc').length > 0) {
-    throw new UserError(
-      'Unable to build the module as there is a .babelrc in your project',
-      'nwb needs to write a temporary .babelrc to configure the build',
-    )
-  }
-
-  cleanModule(args)
-
-  let src = path.resolve('src')
-  let userConfig = getUserConfig(args)
-  let copyFiles = !!args['copy-files']
-
-  let spinner = ora('Creating ES5 build').start()
-  runBabel(
-    {copyFiles, outDir: path.resolve('lib'), src},
-    merge(buildConfig.babel, buildConfig.babelDev || {}, {
-      // Don't force ES5 users of the ES5 build to eat a .require
-      plugins: [require.resolve('babel-plugin-add-module-exports')],
-      // Don't set the path to nwb's babel-runtime, as it will need to be a
-      // peerDependency of your module if you use transform-runtime's helpers
-      // option.
-      setRuntimePath: false,
-    }),
-    userConfig.babel,
-  )
-  spinner.succeed()
-
-  // The ES6 modules build is enabled by default, and must be explicitly
-  // disabled if you don't want it.
-  if (userConfig.npm.esModules !== false) {
-    spinner = ora('Creating ES6 modules build').start()
-    runBabel(
-      {copyFiles, outDir: path.resolve('es'), src},
-      merge(buildConfig.babel, buildConfig.babelDev || {}, {
-        // Don't transpile modules, for use by ES6 module bundlers
-        modules: false,
-        // Don't set the path to nwb's babel-runtime, as it will need to be a
-        // peerDependency of your module if you use transform-runtime's helpers
-        // option.
-        setRuntimePath: false,
-      }),
-      userConfig.babel,
-    )
     spinner.succeed()
+    fs.unlink('.babelrc', () => {
+      cb()
+    })
   }
-
-  temp.cleanupSync()
-
-  if (!userConfig.npm.umd) {
-    return cb()
+  catch (err) {
+    spinner.fail()
+    fs.unlink('.babelrc', () => {
+      cb(err)
+    })
   }
+}
 
-  spinner = ora('Creating UMD builds').start()
+/**
+ * Create development and production UMD builds for <script> tag usage.
+ */
+function buildUMD(args, buildConfig, userConfig, cb) {
+  let spinner = ora('Creating UMD builds').start()
 
   let pkg = require(path.resolve('package.json'))
   let entry = path.resolve(args._[1] || 'src/index.js')
@@ -125,7 +82,7 @@ export default function moduleBuild(args, buildConfig = {}, cb) {
   }
 
   process.env.NODE_ENV = 'development'
-  webpackBuild(args, webpackBuildConfig, (err, stats1) => {
+  webpackBuild(null, args, webpackBuildConfig, (err, stats1) => {
     if (err) {
       spinner.fail()
       return cb(err)
@@ -134,7 +91,7 @@ export default function moduleBuild(args, buildConfig = {}, cb) {
     webpackBuildConfig.babel = merge(buildConfig.babel, buildConfig.babelProd || {})
     webpackBuildConfig.devtool = 'source-map'
     webpackBuildConfig.output.filename = `${pkg.name}.min.js`
-    webpackBuild(args, webpackBuildConfig, (err, stats2) => {
+    webpackBuild(null, args, webpackBuildConfig, (err, stats2) => {
       if (err) {
         spinner.fail()
         return cb(err)
@@ -146,3 +103,61 @@ export default function moduleBuild(args, buildConfig = {}, cb) {
     })
   })
 }
+
+export default function moduleBuild(args, buildConfig = {}, cb) {
+  // XXX Babel doesn't support passing the path to a babelrc file any more
+  if (glob.sync('.babelrc').length > 0) {
+    throw new UserError(
+      'Unable to build the module as there is a .babelrc in your project',
+      'nwb needs to write a temporary .babelrc to configure the build',
+    )
+  }
+
+  let src = path.resolve('src')
+  let userConfig = getUserConfig(args)
+  let copyFiles = !!args['copy-files']
+
+  let tasks = [
+    (cb) => cleanModule(args, cb),
+    (cb) => runBabel(
+      'ES5',
+      {copyFiles, outDir: path.resolve('lib'), src},
+      merge(buildConfig.babel, buildConfig.babelDev || {}, {
+        // Don't force ES5 users of the ES5 build to eat a .require
+        plugins: [require.resolve('babel-plugin-add-module-exports')],
+        // Don't set the path to nwb's babel-runtime, as it will need to be a
+        // peerDependency of your module if you use transform-runtime's helpers
+        // option.
+        setRuntimePath: false,
+      }),
+      userConfig.babel,
+      cb
+    )
+  ]
+
+  // The ES6 modules build is enabled by default, and must be explicitly
+  // disabled if you don't want it.
+  if (userConfig.npm.esModules !== false) {
+    tasks.push((cb) => runBabel(
+      'ES6 modules',
+      {copyFiles, outDir: path.resolve('es'), src},
+      merge(buildConfig.babel, buildConfig.babelDev || {}, {
+        // Don't transpile modules, for use by ES6 module bundlers
+        modules: false,
+        // Don't set the path to nwb's babel-runtime, as it will need to be a
+        // peerDependency of your module if you use transform-runtime's helpers
+        // option.
+        setRuntimePath: false,
+      }),
+      userConfig.babel,
+      cb
+    ))
+  }
+
+  // The UMD build must be explicitly enabled
+  if (userConfig.npm.umd) {
+    tasks.push((cb) => buildUMD(args, buildConfig, userConfig, cb))
+  }
+
+  runSeries(tasks, cb)
+}
diff --git a/src/utils.js b/src/utils.js
index 3aea0a99..0579c015 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -2,9 +2,27 @@ import {execSync} from 'child_process'
 import util from 'util'
 
 import argvSetEnv from 'argv-set-env'
+import ora from 'ora'
+import rimraf from 'rimraf'
+import runSeries from 'run-series'
 
 import debug from './debug'
 
+export function clean(name, dirs, cb) {
+  let spinner = ora(`Cleaning ${name}`).start()
+  runSeries(
+    dirs.map(dir => cb => rimraf(dir, cb)),
+    (err) => {
+      if (err) {
+        spinner.fail()
+        return cb(err)
+      }
+      spinner.succeed()
+      cb()
+    }
+  )
+}
+
 export function clearConsole() {
   if (process.env.NWB_TEST) return
   // This will completely wipe scrollback in cmd.exe on Windows - recommend
diff --git a/src/webpackBuild.js b/src/webpackBuild.js
index d7a69fca..6356ff68 100644
--- a/src/webpackBuild.js
+++ b/src/webpackBuild.js
@@ -1,3 +1,4 @@
+import ora from 'ora'
 import webpack from 'webpack'
 
 import createWebpackConfig from './createWebpackConfig'
@@ -5,8 +6,13 @@ import debug from './debug'
 import getPluginConfig from './getPluginConfig'
 import getUserConfig from './getUserConfig'
 import {deepToString, defaultNodeEnv} from './utils'
+import {logBuildResults} from './webpackUtils'
 
-export default function webpackBuild(args, buildConfig = {}, cb) {
+/**
+ * If you pass a non-falsy name, this will handle spinner display and output
+ * logging itself, otherwise use the stats provided in the callback.
+ */
+export default function webpackBuild(name, args, buildConfig = {}, cb) {
   defaultNodeEnv('production')
 
   let userConfig = getUserConfig(args)
@@ -19,6 +25,21 @@ export default function webpackBuild(args, buildConfig = {}, cb) {
 
   debug('webpack config: %s', deepToString(webpackConfig))
 
+  let spinner
+  if (name) {
+    spinner = ora(`Building ${name}`).start()
+  }
   let compiler = webpack(webpackConfig)
-  compiler.run(cb)
+  compiler.run((err, stats) => {
+    if (err) {
+      if (spinner) {
+        spinner.fail()
+      }
+      return cb(err)
+    }
+    if (spinner) {
+      logBuildResults(stats, spinner)
+    }
+    cb(null, stats)
+  })
 }
diff --git a/src/webpackUtils.js b/src/webpackUtils.js
index 657c2707..b3c1e071 100644
--- a/src/webpackUtils.js
+++ b/src/webpackUtils.js
@@ -53,20 +53,26 @@ function getFileDetails(stats) {
 
 export function logBuildResults(stats, spinner) {
   if (stats.hasErrors()) {
-    spinner.fail()
-    console.log()
+    if (spinner) {
+      spinner.fail()
+      console.log()
+    }
     logErrorsAndWarnings(stats)
   }
   else if (stats.hasWarnings()) {
-    spinner.stopAndPersist(chalk.yellow(figures.warning))
-    console.log()
+    if (spinner) {
+      spinner.stopAndPersist(chalk.yellow(figures.warning))
+      console.log()
+    }
     logErrorsAndWarnings(stats)
     console.log()
     logGzippedFileSizes(stats)
   }
   else {
-    spinner.succeed()
-    console.log()
+    if (spinner) {
+      spinner.succeed()
+      console.log()
+    }
     logGzippedFileSizes(stats)
   }
 }
diff --git a/tests/commands/build-test.js b/tests/commands/build-test.js
index ac21338e..35ee170d 100644
--- a/tests/commands/build-test.js
+++ b/tests/commands/build-test.js
@@ -128,4 +128,20 @@ describe('command: build', function() {
         .toInclude('displayName:"Demo"')
     })
   })
+
+  describe('building and cleaning a Web app with spaces in the path', () => {
+    before((done) => {
+      setUp()
+      cli(['new', 'web-app', 'test web app'], (err) => {
+        expect(err).toNotExist('No errors creating a new web app')
+        process.chdir(path.join(tmpDir, 'test web app'))
+        cli(['clean'], (err) => {
+          expect(err).toNotExist('No errors cleaning with spaces in the path')
+          done(err)
+        })
+      })
+    })
+    after(tearDown)
+    it('had no errors', () => {})
+  })
 })