Fibreglass specification and application method
Drain pool and assess whether it requires acid washing. Some older marbelite will tend to collapse and crumble if exposed to an acid wash. New plaster is usually acid washed to remove any excess alkaline that will attack the resin.
Dry for a few days. Sometimes this is impossible in the rainy season as there is always a puddle in the deep end. This fortunately has never caused us any problems over the past 28 years.
Cut a groove under the coping and apply a coat of resin and then force Wollastenite body putty into the groove. This creates a thicker rim similar to the rim of a paper cup, thus strengthening the top of the pool even more.
Apply a primer coat of resin of approximately 600 grams per square metre.
Apply a minimum layer of 450-gram chop strand mat with a three to one ratio of Isophthalic resin to the mat (1.35Kg). 0n extremely weak pools, we advise to double this.
Allow to dry. Grind any sharp edges and touch up any imperfections.
Apply a layer of tissue mosaic to the surface water line.
Apply about 600 grams per square metre of Isophthalic pool topcoat to the surface of the pool as a finished surface.
This results in an excess of 3 kg of material per square metre.
Allow to dry for up to 72 hours. If left too long the lining may become very dirty and even pull away from the walls
in extreme temperatures due to heat expansion.
Dark colour pools are not recommended due to long term fading and difficulty of application as they may streak when applied in adverse weather conditions.
We guarantee not to do the following!
We will never thin the resin down with acetone to make it spread better. This makes it breakdown in a few years leaving you with a surface that can’t be repaired. Our resin is weighed before and after the job is done to prevent any staff trying to steal resin by thinning it out. This has been known to occur in some companies without their knowledge. (A few also do it knowingly) If the ratio of resin used to the surface area is incorrect we can pick up any irregularities.
Pool Pro will never use 300-gram fibreglass unless requested by the client to save money.
Pool Pro will never use Orthophthalic resin under the Isophthalic topcoat, as it will be exposed to the water when the pool cleaner eventually wears the topcoat thin. A lot of pools are done this way to keep prices down. This method also leads to osmosis or ” black plaque ” (Small black “comet ” looking marks on the surface caused by cobalt).These marks can also occur with Iso resins when the chlorine levels are kept excessively high on covered pools causing a reaction with the cobalt. The cheaper Orthophthalic resin also tends to expand over the years and becomes too large for the area it is contained in, and it inevitably pulls away from the walls and results in a loose lining that will split when stood upon. See our cheap and nasty section for photos.