Intelligent Membranes offer the complete range of airtightness package of supply and install of Intelligent Membranes Liquid Vapour Control Membranes. We are located in United Kingdom and our products have been put through the strictest tests including our BBA APPROVED like Intelligent Protection, Passive Purple, Passive Purple External, Passive Purple brush, surface PRO and Airtight white. These products whether be protection for your windows, External uv and weatherproofing or a complete airtight membrane. And all the products are guaranteed to deliver safely.