DIY enthusiasts can achieve a high-quality professional water-proof sealing finish for everything from corrugated roofing to window frames, thanks to the innovative range of Flashband sealing strips available through Damax Kahn & Kahn.

Flashband has been exclusively distributed locally through Kahn & Kahn for approximately 40 years. According to Damax Kahn & Kahn Managing Director David Tromp, Flashband offers the same highly professional finish to sealing and flashing work that would be expected of an expert on a construction site.

“The Flashband strips are easy to use and come in a variety of sizes that reduces the need for any cutting. Sealing gutters, down pipes and chimneys and pipe vents is a task that can be accomplished easily and efficiently,” he explains.

Each Flashband strip has an aluminium facing, backed with a pressure-sensitive sealing compound. This compound is protected by a special siliconised release paper which is removed before use. Once applied, it can be left to face all weather conditions without further attention. Flashband gets better as time goes by, which is great for users!

Bonding to a wide range of substrates and providing an instant seal means Flashband strips can be used under window sills and eaves; for sealing off roof screws and for galvanised iron overlaps. Used correctly, Flashband strips can even help to deal with boat leaks.


  • Metal box and valley gutters
  • Down-pipes
  • Galvanised Iron overlaps
  • Sheeting overlaps
  • Window frames
  • Protruding pipes through roofs
  • Cement box gutters
  • Chimneys
  • Pipe vents
  • Flashings in general
  • Ridging and capping
  • Under window sills
  • Under the sealing of roofing screws
  • Boat leaks

Flashband is extremely versatile and can be used anywhere for any application.


Preparing the various surfaces for Flashband is almost as simple as using the product, David Tromp notes. “Surfaces must be clean and dry, with flaking paint, putty or rust removed with a wire brush. New galvanised surfaces should be etched first, and rough or porous surfaces will require Flashband Primer, painted on and cured thoroughly.”

From there, it’s a matter of peeling the siliconised paper backing off the correct sized strip, pressing firmly into place and smoothing down the centre of the strip by hand. If there are angles, the Flashband strip must be pressed firmly into the angle. “Where necessary, adjoining surfaces should be overlapped by at least 12 mm,” David Tromp advises.

For spiral applications such as piping or bars, the strip must be wound evenly around the pipe or bar, ensuring that each successive turn overlaps the previous one third of the width of the strip. The Flashband overlap can then be smoothed with hand pressure to effect an even seal.

David Tromp also suggests warming the Flashband slightly in cold weather to improve its adhesive properties. “Ideal for new construction, repairs and maintenance projects, Flashband reinforces joints and penetrations while sealing these areas. It’s a cost-effective solution that provides lasting protection in all climates,” David Tromp concludes.