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Bosch Bostik Flashband 225mm x 10m

4.7 (516 reviews)
SKU: 240609120445003 EAN: 5036684002684

Compare 1 price for Bosch Bostik Flashband 225mm x 10m — from £28.09 across 1 UK seller including Toolstation.

£28.09 3h ago
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Whether it’s for a new build or an emergency repair, using Bostik Flashband makes the job quick and easy. This self-adhesive bitumen strip bonds instantly to a wide variety of building materials, providing a permanent watertight seal.\nFlashband is a great choice for repairs to lead flashing, sealing valley gutters or repairing roofing felt joints on flat roofs. It features four layers of protection to make it tear and impact-resistant, and able to withstand high temperatures.\nRemember to use Bostik Flashband Primer before application, particularly when you’re working with dusty or porous surfaces.\n• Bonds instantly to a wide range of building materials\n• Provides a permanent and watertight seal\n• Quick and easy application\n• Perfect for new-build or emergency repairs\n• Four layers of protection for tear and impact resistance\n• Can withstand temperatures of up to 100°C\n• Use Flashband primer before application – (code 52679)
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Customer Reviews 516

4.7
516 reviews
5 star
423
4 star
59
3 star
10
2 star
9
1 star
15
Did the job and more so
5.0
February 18, 2026
Justinkinghelm Verified Purchase

Had a leak on my shed felt roof so got this today the job and did the job.i used a heat gun on low to melt the tar on the back of the tape and went over the edges with an old wallpaper roller so there were no gaps for water to get under and boy did it stick and do the job so I will be buying more to keep in the shed for the next emergency repair

All ok
5.0
February 12, 2026
Sheb Woolley Verified Purchase

Ok in the end - it is advisable to ensure that primer is dry before applying the flashband

GOOD STUFF
4.0
January 12, 2026
Ace of spades Verified Purchase

I bought this for a shed roof flashing. It was easy to use and did the job.

Skylight repair
5.0
January 2, 2026
JEGS Verified Purchase

Got this to repair some previous flashing put on skylights on a felt roof which had been baked during last summer's heat. Good stuff but you need to get the adhesive literally sizzling and apply with serious pressure if you want to get a good bond but a good idea to get some bitumen primer down first. We'll see how this performs next summer if it's as hot as the last one.

Lead repair to flat roof
5.0
December 25, 2025
55da2706-9820-5172-a99b-b18b5b3a3d49 Verified Purchase

Used over expansion ridges where slight cracks were occurring. Cleaned and dried area with heat gun first then pressed into place and smoothed over cloth and seem roller.
Sticks very well and looks neat. Think it will reinforce well but only time will tell.

flashband
5.0
December 15, 2025
e432bd4f-6fc5-574f-8de8-4b69511810f7 Verified Purchase

excellent product had my roof fixed in a flash, good price too.

Not sticky.
2.0
December 8, 2025
825cc997-08af-5768-9670-cc10c3f40901 Verified Purchase

Similar to other reviews, the tape was not sticky and had dried up.

Super sticky tape that forms a watertite seal
5.0
December 8, 2025
Colin 62 Verified Purchase

Super sticky roof sealant that just works.I used this recently to seal between my conservatory roof and the eaves of the house. No problems at all. I've used it several times over the years and never had it leak.

Waterproof tape
5.0
December 7, 2025
NMc Verified Purchase

Applies and sticks easily enough. Malleable, cuts easily with a Stanley. Seems thick and waterproof enough so far.

Appears to have done what it was intended to do
5.0
November 15, 2025
jimmymack Verified Purchase

Time will tell but initially it appears to have worked as expected, so I’ll give it full marks

Its ok , if its a dry day . Price is decent but you do need a primer
3.0
November 13, 2025
Jk roofing Verified Purchase

Decent when the weather is hot , waste of time to use if raining or very wet surface.

Flashing idea.
5.0
November 11, 2025
Spike no hair Verified Purchase

Just as good as lead and looks just as good. You wouldn’t know unless you close.

Flashing Tapes
5.0
November 3, 2025
Reyburner Verified Purchase

Loving this flashing tape, it's water proof and comes in three different widths to match your requirements. Waterproof and so easy to use, I recommend it for those jobs on the roof or balconies.

Good for a quick flash
5.0
November 1, 2025
Nala Sregor Verified Purchase

Sticks like the proverbial to a blanket and looks as good as lead

Sticks like glue.
5.0
October 28, 2025
Lumpey Verified Purchase

No problems with getting this to stick, a good 5 inch band top and bottom of flat roof to brick cabke.

Great produce
5.0
October 26, 2025
Adrian Trundle Verified Purchase

Great product which sticks well and does the job to seal my shed roof

Easy, quick fix
5.0
October 19, 2025
6pin6kzu4hkvi07o1qpdob6tx Verified Purchase

Easy to apply, cut and mould. When used with primer should last a long time.

Had very little if no adhesion
1.0
October 4, 2025
Tony0987654321

Poor quality, unrolled it and the backing plastic cover was coming off. Looks like it had separated end the tacky adhesive had dried. Had to adapt and use it as had no choice then to use a heat gun on it as an emergency repair.

Spot on product
5.0
September 29, 2025
3790ab34-fa0b-57ad-8c88-757b89ebf82d Verified Purchase

Brilliant product did exactly the job I needed it for.

Helpful Material
5.0
September 24, 2025
I am Verified Purchase

Very impressed with this flashband. It's does as it says and very effective in protecting against leaks and makes a DIY novice like me do what I need to do without much stress. Will buy again when needed.

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