Keeps Euro Polymers ahead of the game with innovative products
If its cold applied liquid coatings you are looking for euro Polymers lead the way in Innovation. Extensive wind up-lift tests by BRE have shown that the ‘Eurotec System with its nano technology’ offers enhanced adhesion and waterproofing properties.
Euro Polymers Technical Director, Tracy Freear explains the recent wind up=lift pressure testing. “Increasing suction is applied to the built up roof specimen to simulate the worst possible wind loading expected during the lifetime of a typical roof system in the UK. Testing was taken well beyond the UK norm to take the specimen to destruction. Inspection of the specimen show that the Eurotec system remained fully bonded to the bituminous membrane throughout the testing, however the bond between the roof deck and the subsequent bituminous layers failed”.
In the latest report, Dr. Paul Blackmore from the BRE goes on to say that the Eurotec system will withstand wind uplift of at least -7.5kPa without showing any signs of de-bonding or other visual indications of damage or stress. The bond strength between the Eurotec liquid coating system and the bituminous membrane is considerably stronger than the bond between the bituminous membranes and the roof deck.
What does this mean?
In the UK the basic wind speeds vary from about 20m/s in London and surrounding areas to about 30m/s in the north of Scotland. Assuming a building height of 10 meters in exposed open country terrain close to the coast the typical maximum wind uplift pressure on a flat roof will be of the order of -1.5kPa in London and 3.5kPa in the North of Scotland (based on BS 6399-2 [3]). Taking the wind uplift pressure of the Eurotec System to be 7.5kPa gives a safety factor against wind uplift of about x5 for exposed sites in the London area and about x2.1 for exposed sites in the North of Scotland.
Wind loads will increase as the building height increases, however the weakest element in the wind uplift resistance is likely to be the bond strength between the existing roof membrane and the roof deck. Earlier testing at Sheffield University’s Farapack Polymer Centre have shown the bond of Euro Polymers systems to existing bituminous membranes to be 5 times greater than alternative bulk polymer roofing systems.
So if its in the heart of London or the exposed coastline of Northern Scotland you are working, rest assured Euro Polymers Eurotec systems are on the roof to stay.