Spray Seal Mastic Sealant. Black. Ideal For Fixing Leaks In Guttering, Roofs, Windows, Pipes And Much More. Flexible And Durable Coating That Covers Cracks And Holes. Can Be Applied To Wet Or Dry Surfaces. Size 300Ml.
4.0 out of 5
80.00% of customers are satisfied
5.0 out of 5 stars Brilliant stuff
Used on my garage roof - asbestos cement sheeting and was easy to use. Didn't stop the leak but think because I identified wrong point so I just now used again and it hadn't clogged the nozzle as I feared it might have done. WARNING _ USE EYE PROTECTION INCASE IT BOUNCES BACK - I DIDN'T AND IT MISSED MY EYE BY MILLIMETRES
4.0 out of 5 stars Great product
Easy to use, sealed around a vent in my shed. Great product at a wonderful price
5.0 out of 5 stars would buy again
Complete novice.Used to fix leaking gutters. (exactly like it says on tin)Dried area and applied to both inside and out.Heavy rain all night 48hrs later and no leaking/dripping :)Am off to order another tin (enough to seal three leaks) Loved it!**Warning-wear protective clothing, eyewear/mask for spray backand mask surrounding area where appropriate.**
3.0 out of 5 stars I can see the usefulness But didn't work for my application
Got 3 sheds and a complex felt roof that links them all together.I have a wall (internal to when you walk in now, but it's technically an external wall originally) that keeps getting wet and holding damp when it rains.As I don't have a clue where water is creeping in from, I thought I'd try this on all the joins and hope for a miracle... But no miracle came that night 😔I got 4 cans as to others saying the cans run out fast... And they do! But I think it's much higher pressure than "normal" spray paint as this really does rush out the nozzle.It goes on like a black paint, and within 30 seconds you can see it setting. Ends up being like a thin rubber ish finish.So I can see the usefulness of this definitely in some applications, but unfortunately not in mine.Full new roof felt I think is needed now
1.0 out of 5 stars Lasted less than 3 months!
Followed instructions implicitly by preparing surface and only using when said surface completely dry and dust free. Only to find leak back. Useless product.
5.0 out of 5 stars Leaks
Works well be better in white. Stopped the leak immediately, great stuff if a bit messy
4.0 out of 5 stars Not much in the tin
This works okay I used it for when my shed felt blew off to stick my felt back down...however the shed still leaks as hardly enough in the can to cover so shed still leaks...and ended up using builders mate to hold my felt down till I can replace it in summer...its okay for a small patch probably and I mean small otherwise buy 2 cans or more...or get something better...this was only a quick fix for me at the time. We have had some bad winds and felt is still on 🤞🏼
5.0 out of 5 stars Good
Bought it for my friend
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Product origin: United Kingdom
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