Kingspan Nilvent - Breathable Membrane for Unventilated Pitched Roofs

Kingspan Nilvent provides a completely watertight structure under normal weather conditions. It is highly water-resistant and has the added advantage of self-sealing around nail penetrations. These properties mean that it can be safely used even in constructions with a large number of nail penetrations through the membrane, such as where natural slates are nailed directly into a sarking board.

Most buildings contain air that is more humid than the air outside. This humidity differential drives moisture from the interior to the exterior of the building's structure. When this moisture encounters a relatively cold and impermeable layer, it may condense. In pitched roofs, sarking felt can serve as such a layer. The traditional method of mitigating the risk of condensation in roofs is to ventilate the moisture away by introducing airflow directly above the insulation layer and below the sarking felt. Modern solutions for roofs include the use of breathable membranes to replace sarking felt. Kingspan Nilvent breathable membrane eliminates the need for ventilation directly above the insulation layer. I

t achieves this by having a low vapour resistance, which allows water vapour to escape through the breathable membrane to the outside of the building. Kingspan Nilvent has a vapour resistance of 0.17 MN·s/g, allowing any water vapour that reaches it to escape without condensing.Kingspan Nilvent consists of a laminated, three-layer polyolefin construction. The top layer provides protection from UV and mechanical damage, the middle layer serves as the functional layer, and the bottom layer offers abrasion resistance.

• Next generation breathable membrane technology,
• Completely waterproof can be used as a temporary waterproof roof covering,
• Nontenting,
• Completely airtight,
• Excellent water vapour permeability no condensation risk,
• Strong excellent nail tear and tensile strengths,
• Quiet under wind loading,
• Durable heat and UV stable,
• Lifetime guarantee,
• Selfsealing around nail penetrations,
• Lightweight,
• Easy to handle and install,
• Ideal for newbuild,
• Environmentally friendly CFC/HCFCfree with zero Ozone Depletion Potential (ODP)

INSTALLATION

• Manufactured to the highest standards under a quality control system approved to
  • ISO 9001: 2015 (Quality management systems)
  • ISO 14001: 2015 (Environmental management systems) 
• BBA Certificate 11/4870