Bostik Flashband Primer S.V. for Roofs, Primer for Flashing Tape Black - 1L - Improves Grab and Adhesion

Worked well and easy to apply.

Flashband does the job as stated on the tin

Necessary to give good adhesion

Fantastic

Clean the area, apply primer and apply flash band

It goes where you put it but to plenty of other places too. Messy.

I used this after using a role of flashband to cover the top strip of Felt on a shed roof, then when it next rained it poured inside the first flashband had not adhered to the joint even though it had been fitted as the instructions had said, using this before the flashband was fitted sorted out the leak well worth the money.

this product is very useful although you might want to gently warm it up--perhaps with a hair drier on a low setting--should the weather be a little chilly!