Waterproofing an Air Traffic Control Tower, Scotland

Heavy rainfall on the Orkney Islands meant that the basement room of Kirkwall Air Traffic Control Tower suffered from frequent flooding, with water levels reaching 1.2m at their highest point. Newton Waterproofing and Specialist Contractor Wise Basement Systems were called in to remove the existing water and then waterproof the structure to protect it from future flooding, all in just one week.

Kirkwall airport is located on the main island of the Orkneys, 10-miles off the North coast of Scotland. Presented with a logistically challenging location and a tight project timescale of just 1 week, Newton had no hesitation in recommending the expertise of Wise Basement Systems as the specialist contractor to Building Surveyor Pick Everard.

Getting involved at the very start of the project, Wise were immediately able to design, advise on and install a system to remedy the 2 inches of water in the existing basement of the Air Traffic Control tower.

Cavity Drain Waterproofing, or ‘Type C’ waterproofing as it is defined by BS 8102:2009 is often the most effective means of achieving a completely dry ‘Grade 3’ environment in an existing structure below ground. It was therefore no surprise that Wise Basement Systems designed a Newton CDM System for this existing basement area.

To begin, Wise installed 120m2 of Newton 508 on the walls and 80m2 of the recycled Newton 520 eco to the floor, above the closed-cell Fibran XPS 500-C insulation. The drainage membranes were supplemented with a perimeter channel of Newton Basedrain, directed to a Titan-Pro sump chamber containing two NP400 Pumps to remove the water.

Finally, to ensure that the system will continue to work in all eventualities, even in a complete power outage, Wise installed a backup system with dual Northstar batteries and a Victron Power Inverter.

Even with a project located 10 miles from the mainland, and 1 week to waterproof a basement with only a 600mm wide access hatch, Wise Basement Systems delivered a completely dry space for the client that was also compliant with BS 8102:2009 and backed by their guarantee.