Concrete block walls can leak the air in a building at up to 80 cubic metres of air every hour through each square metre of surface, at that rate it won't take long for the warm air inside to escape from the building, resulting in increased heating costs & carbon emissions.
Elite Airtight has been tested for airtightness by an independent laboratory in accordance with BS EN 12114:2000 Thermal performance of buildings and has received a 100% pass when applied to standard cellular blocks, which were leaking 80m3/hour/M2 at 50pa. before application of the Elite Airtight coating and leakage "too low to detect" after application of Elite Airtight. The test was carried out on standard cellular blocks - applying Elite Airtight to blocks with smaller holes & fissures or onto paint quality blocks will result in less paint being required to complete the job. See HRS Services Appendix for results showing air permeability below 0.36m3/h/m2 in our News page.
Architects, specifiers and builders now have the option of specifying standard concrete blocks (where appropriate) for quick and economical construction projects and for the resultant walls to have a washable, airtight and decorative finish.
Elite Airtight offer significant advantages over parging, see our Airtight, Parge or Blockfiller Page or our News Page for an example of Elite Airtight being used on the £30M Environment & Sustainability Institute in Cornwall
Elite Airtight is also ideal for use in refurbishment projects, as the coating can be applied directly onto previously painted block - making significant improvements to the airtightness of the building.
See Elite Airtight being applied to a block wall on our YouTube video: Elite Airtight Video