Most water tanks today come with a 10yr
warranty or longer. However after a number of years it is possible that a
leak will form. Your options for repair will then depend on the type of
tank you have.
Types of tanks:
Concrete – a very solid construction,
requiring good ground preparation. Bushfire proof and the only type of
tank that can be placed inground. Concrete has a high thermal mass,
naturally keeping stored water cooler as well as neutralising acid in
the water. Cooler water means much lower risk of algae blooms and other
bacteria forming. However can be prone to cracking with ground
movements. Tends to be the worst for overall environmental impact.
Poly Tank – a lighter more cost effective
solution that is very popular in residential situations. Tanks are made
from polyethylene in a variety of colours with minimal impact on the
environment. The tanks are generally easy to maintain and are 100%
recyclable. Poly tanks are very strong, won’t rust and less likely to
crack than concrete tanks. Tanks come with a minimum 10yr guarantee, but
tend to use BPA and UV inhibitors in the manufacturing process. Poly
tanks also have a very low thermal mass, so water will warm on hot days,
which can be an issue with bacterial growth.
Steel Modular Panel Tanks
– long life span (usually a 20yr warranty) and keeps water cool. Comes
in a range of styles and finishes, with a flat roof structure. Stainless
steel tanks can also be considered the best environmentally, with
almost 100% recyclability at end of life, but tends to be the most
expensive.
When fixing a tank, there are only a few methods that can be be considered:
Application of a sealant
pros – inexpensive for concrete tanks if done properly and is some cases the water won’t need to be drained before application.
cons – will not generally work on poly tanks, and needs to be flexible to accommodate tank movement.
Welding (plastic or steel)
pros – This is an effective way to repair poly tanks, as done properly the weld is about as strong as the original plastic.
cons – need to remove water to make repairs, and join strength is dependent on the skill of the operator.
Use of a tank liner
pros – very flexible and will move accommodate ground movements
easily. Custom made to fit any tank. Usually comes with a 10yr
guarantee. Will fit any almost any tank that is still structurally
sound. Does not usually need the same level of preparation as applied
coatings do. Also if you can get inside the tank, you can usually
install the liner yourself.
cons – you will have to empty the tank. Must be careful with abrasive surfaces as it is possible to puncture lining.
For More Information Visit:- Tank Liner
No comments:
Post a Comment