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

A bit tricky peeling the backing off but this stuff is great. Used it to repair my flat roof where it had a crack & to seal around a stack pipe that went through the roof & had been bodged with silicone they shrank leaving a gap. Sticks really well, no rain to test it yet but looks like it will do the job.

This is really good stuff. I used it to cover a plastic roof on a pergola which had some holes in it. I believe that this will help protect the roof and add years to its lifespan. It is VERY sticky if used on a warm sunny day so you need to be prepared.

Used in my coping stones to repair the joints. I painted over these to definitely make sure no water could leak through. We had a leak last year and we could only put it down to the joints. So far so good. Good preparation is key - clean and use a roller to press the tape to confirm it has stuck

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.

Addisive sticks well to brickwork and steel roofing sheets much easier that using lead

Good product, some customers have stated it does not stick to the roof. When it arrives keep it next to a radiator so the glue is at room temperature. When applying use a heat gun to warm up the glue, press onto the roof with a roller and apply heat at the same time. I used a primer so the flashing tape had a good key.

At first I was happy as all seemed good. I installed using a mini roller, and my hands to nicely force compress the roll on the wall. A week later I noticed loads of water leaking inside. I climbed on the roof to find the whole lot had peeled off the wall and gone brittle. I used some EDPM mastic and stuck it all on to which it appears to be now doing its job.

I used this to create a waterproof bond between the house and a lean-to, but after about 4-5 months it has slipped/dropped off the wall and has let water in during heavier rainfall. I used the recommended Bostik primer (black markings seen in photos) which I had hoped would mean this wouldn’t happen. I would recommend going for a size (width) larger than you may think, as I will have to redo this again.

Calfeutrage d'une cheminée

Buon prodotto, utile per impermeabilizzare una veranda.

I worked on our roof, we had rain for 4 weeks, no leak 😊

Good product-does the job

Delivered with a smile. Great product and great value.