em.vault Barrel Vault

em.vaults are high quality continuous barrel vault rooflights designed to maximise natural light.
These flat roof windows are suitable for flat roofs including single ply, felt, hot-melt, asphalt, liquid, GRP and lead, em.vaults can span widths up to 6m wide and unlimited length.  em.vault purpose made continuous rooflights come in a wide range of profiles and glazing options to meet virtually any specifier and client requirement.  em.vault skylights are also deemed a non-fragile rooflight in accordance with (HSE) Health and Safety in Roofworks.

Key Benefits:

  • Available in unlimited length
  • Polycarbonate glazing
  • Glazed or solid vertical end panel
  • uPVC upstand curb
  • Perimeter cill section


The standard rooflight profile is a rise 1/6 of the width although a higher rise and bespoke profiles are also available on certain sizes.

  • High-rise (1/2 width)
  • Low-rise (1/6 width)
  • Low-rise (bespoke)


em.vaults are purpose-made and available in widths from 0.6m (Multiwall 1.5m) to 6.0m and in unlimited length.


Thermoformed glazing

em.vaults are constructed from polycarbonate sheet and are available in single, double and triple skin solid polycarbonate and in multiwall construction.  Polycarbonate is virtually unbreakable, with an impact strength up to 250 times greater than glass.  Aerogel is a multiwall polycarbonate filled with translucent aerogel granules, giving an even spread of diffused light and excellent thermal properties.

Available options:

  • Polycarbonate Single skin
  • Polycarbonate Double skin
  • Polycarbonate Triple skin
  • Polycarbonate Multiwall 16mm glazing ‚Äì Clear or Opal Diffused
  • Polycarbonate Multiwall 25mm glazing ‚Äì Clear or Opal Diffused
  • Polycarbonate Aerogel 16mm glazing

Barrel vaults are also available with GRP glazing – our T-Vault range. Click here for more details.


em.vault continuous rooflights can be supplied in Clear, Opal Diffused, Bronze or HeatReflect (which reflects up to 68% of the heat radiation) glazing.

  • Clear
  • Opal Diffused
  • Bronze
  • HeatReflect

Glazing Specification Table

All polycarbonate em.vaults have a minimum 3mm thick glazing.  Inner skin thickness varies may vary.

*Thermal transmission refers to U-Values. For Ud-Values, please contact us.

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