3. How long will a treatment last?

The current treatments will deal with the problem for a long period … if correctly treated this should be in the 15 – 20 years range but will not be an “absolute cure”. Most yards / paint suppliers will only offer guarantees against further blistering for generally 5 years only. However I usually find that most coatings are good for at least 10 years and often 15. Coatings / treatments have improved over the years so the more recent ones I would suspect will be longer lasting … we will have to wait and see I’m afraid ???

3. How long will a treatment last?