Redland has made some big changes to its underlay offering. Spirtech 250 will continue as the non-specification offer, with Spirtech 400 introduced as a new, high performance specification product. Spirtech 400 2S joins the range as a brand new concept for Redland as a sealed underlay. Veltitech 145, a new non-breather underlay, has also been introduced.
Is a medium-weight, vapour permeable underlay with an integrated grid targeted at the private renovation and new build markets. It has high step through and nail tear resistance.
Is a superior heavy duty, vapour permeable underlay also with an integrated grid, targeted at the public renovation and new build specification markets. It is extremely water-tight with outstanding protection against falling objects.
Spirtech 400 2S
The same as Spirtech 400 but with a unique gluing system which allows the overlaps to be sealed, creating a wind-tight membrane. The vertical laps and sidelaps can be sealed using Redland’s underlay accessories such as Underlay Connection Glue or DivoTape, a single sided, UV Resistant Polyethylene tape with mesh reinforcement.
It represents an ideal specification for warm or hybrid roofs where wind penetration can affect roof insulation performance.
Represents a lightweight, more cost-effective non -breather underlay that can be specified as a replacement for a vapour- permeable underlay where eaves and high level ventilation are already included.
When Spirtech 400 and Spirtech 400 2S are used as part of a Redland SpecMaster specification, completed roofs qualify for a 15 year design liability guarantee.
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