Bostik Flashband Self Adhesive Flashing Tape for Roofs Grey - 150mm x 10m - Provides an Instant Watertight Seal - Excellent Adhesion

I used this very sticky flashing tape to repair rotting, but very dry wood on the lower half of my summer house doors before - the rain arrived. It worked a treat! I used 2x10m rolls and this completed 8 doors perfectly using 4 x15mil wide strips on each door panel (43W x 47H) Don't forget to allow extra for the overlaps...I used very sharp, long-bladed scissors to cut the required strips and it cuts like butter and is easily shaped. I found a knife 'gummed up' very quickly and did not cut nearly as neatly as the scissors. It's worth having some white spirit to hand to clean your tools. Don't be tempted to pull the backing off before you have the flashing in exactly the right position. Once it's stuck it's a nightmare to unstick! Be advised that it comes off the roll wrinkled and there's nothing you can do to iron them out. You can overpaint easily with water based paint. (two coats.) I would recommend for all sorts of jobs.

very sticky, worked well on the shed roof when putting felt on, should keep it water tight.

SITUATION: I used this product to seal a plastic (polycarbonate?) Corolux roof to two exterior painted brick walls. The previous seal had failed after many years service. The work was done in cool but dry autumn weather. I am a time served DIYer but a first time user of Flashband.PREPARATION: I cleaned off the old sealant mostly with a scrapers. I filled mortar joints where mortar had come away and other indents in the brickwork with two pack Ronseal polyester filler to get a new surface quickly. In some places I had to dry out the brick work with a hot air blower to get the filler to stick well. Afterwards I sanded the filler to a flat surface. I primed the area the Flasband was to cover with the Bostic primer which i think was essential to get a good bond.APPLICATION: Putting the Flashband in place was easy as it is vey forgiving so it is easy to keep in a straight line. I used a roller to press every section in place. That cured 99% of the leaks I had previously.REFINISHING: I went back over all of the Flashband with the roller and gentle application of the hot air blower. I could immediately see that the bonding was better all round especially at the edges. i would always do this except perhaps in hot weather as i then got 100% dryness.RESULT.: Easier to used and better than i could have hoped for. As usual preparation was most important and takes longest.

Fast sticking, good watertight seal

Great deal. Fast delivery.

I cannot express how fantastic this product is. I used it to add extra waterproofing to a sauna roof and it worked a treat. You MUST use a heat gun to apply otherwise the tar adhesive won’t stick, although u was applying in winter. The material is very flexible and has a thin layer of metal inside which makes it look just like led. Love it.

This product would not stick no matter what was done very disappointed waste of money this is terrible would not stick no matter what we done wouldn’t recommend waste of money

I have some patches on my shed roof that I wanted to cover, to save me replacing the felt completely at this time.This is fairly adhesive but best to apply in warmer weather as this helped it bond to the roof. It was easy to apply. I just measured the spaces I wanted it to cover and used household scissors to cut to length. It is then as simple as removing the film over the adhesive side and applying to the roof. Some moderate pressure is required to ensure it sticks well.This has been in my roof for over a month now and has stayed in place. Even during some sting winds. My shed is fairly exposed so takes a lot of battering In the wind and rain. Not one piece has moved and the shed has remained waterproof since it was applied.This is a very handy item for small tears and cracks in roof felt but if you have big holes it will not help.I would purchase again and good value for money.