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Veltitech 145

Veltitech 145 is a lighterweight, non-breather underlay which can be specified as a replacement for a vapour-permeable underlay where eaves and high level ventilation are already included. NHBC requirements updated in Jan 2011 state that a vapour-permeable underlay must have high level ventilation on New Build projects. This was because a vapour-permeable underlay alone does not completely remove the risk of condensation during the drying out period on new build houses.

Non-breather membranes are also used in Scotland where the roof structure normally includes rigid sarking onto which the underlay is laid.


  • A strong, yet lightweight, non-breather underlay
  • Robust construction allows Veltitech to withstand the highest wind loading found in the UK
  • Provides high tear resistance, tensile strength and protection against rain
  • Can be used with eaves and ridge ventilation as a price sensitive alternative to vapour-permeable underlay
  • Excellent Nail tear resistance
  • Suitable for traditional vented roof systems

General Information


Church’s crowning glory sees BMI Redland reach the heights

Craftsmanship and attention to detail received their just reward when the re-roofing of Shettleston New Parish Church in Glasgow’s East End won the Roof Tiling category in the National Federation of Roofing Contractors’ UK Roofing Awards.

A force for good in roofing

As part of an initiative to attract former service personnel into the construction industry, Coleg Cambria, Deeside, North East Wales; is hosting a Forces in Construction Insight Day on October 10th.

BMI pitches up with a new flat roof training facility

Following the completion of a new BMI Icopal flat roofing training area, and the refurbishment of the existing BMI Redland pitched training facility, BMI’s National Training Centre is now able to offer contractors, merchants and students an extensive range of both pitched and flat roof courses at the one location. This makes BMI the only UK roofing manufacturer able to offer training in both disciplines and at the one site.

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