+ How long will the treatment last?
Due to the inorganic nature and under normal conditions it will last forever.
+ May the surface be overcoated with paint after treatment?
All leading paint brands where tested. In all instances the life expectancy of the paint was extended dramatically. No paint failures where recorded.
+ Will I use less paint?
During treatment with pct 56 the chemical enters the microscopic capillaries within the surface to form a solid bond. When paint is applied, it is unable to enter these microscopic capillaries. Less paint is therefore required. The surface profile of the surface is however not disturbed.
Paint usage reduces by 14 – 16%.
+ What about cement paving bricks?
Due to their composition paving bricks are extremely absorbent and act like a sponge when wetted. Internal capillaries are large and any oil and wastage or spillages are absorbed. Removal is impossible.
Treatment with copious amounts of PCT56 will deprive the bricks of any absorbing properties. Any oil spillage will lie on the surface and may be washed off with a domestic detergent.
+ What about prefabricated walls?
No formal specification exist for manufacturing or quality procedures for prefabricated walls. Municipal by-laws clearly express that prefabricated walls are approved for identifying surrounding borders only and no differentiation are made with steel wire fencing.
Slabs are reinforced with steel and mechanical breakdown occurs when water is absorbed and the steel becomes affected with rust or corrosion. In certain conditions entire slabs are destroyed. This entire process is aggravated by underlying damp coarse membrane.
Prefabricated walls are often painted to add aesthetic value to property. Case histories have revealed that the life expectancy of prefabricated wall sections previously treated with PCT56 and painted with a high quality paint increased 5 x.
+ What about cement roof tiles?
Being of cementitious nature and continually subjected to severe atmospheric conditions such as rain, hail and temperature variations the life expectancy of cement roof tiles are limited.
Mechanical properties progressively reduce with ageing when water leach the lime from the cement and over prolonged periods the tiles become brittle when all mechanical properties are destroyed. Costly replacement becomes necessary. This occurs between 6 – 8 years.
In january 2004 two tiles where submitted for accelerated “weatherometer” tests by a leading laboratory who specialize in this field. One tile was treated with PCT 56. After 4 months, basically representative of 14 years actual practical exposure in accordance with SABS requirements, the tiles where removed. On removal from the test equipment the untreated tile shattered while the treated tile showed no signs of any mechanical failure other than a color change from red oxide to light brown due to oxidation of inherent oxides.
The life expectancy of cement roof tiles will improve dramatically when treated with PCT 56.
+ Why is it not possible to apply cement plaster to a surface treated with PCT56?
HOW DOES CEMENT CURE.
A Portland cement plaster mix gains strength by means of chemical and physical interaction with water, aggregate and the substrate or surface that it is applied to.
The most important requirement in curing of cement plaster is the presence of sufficient water in the mortar or mix to hydrate the cement paste.
Water acts as a catalyst for curing. A chemical reaction commences when water and Portland cement are brought into contact with each other during initial stages of mixing either by mechanical mixer or manual mixing.
A series of new chemical reactions follow when compounds form which bind together the grains of sand or mortar within the mixture and the substrate or surface simultaneously.
Water is the critical factor in this reaction as it actually combines with the cement and the substrate.
This reaction is designated hydration. If hydration is unable to take place, failure of the plaster mix will be evident.
In the event that a surface is treated with PCT 56 prior to applying plaster, hydration can not take place due to the water repellent properties of PCT 56.
Therefore, and under no circumstances, can PCT 56 be applied to a surface or substrate as an intermediate treatment between two plaster surfaces or underlying brick substrate,
+ Can I substitute water with PCT56 when mixing crack-filler or tile grout?
When domestic crack-fillers and grouts are mixed with PCT56 to achieve a paste they will obtain water repellent properties when curing has occurred.
However, in some instances the viscosity of the paste increases dramatically and when water is added the viscosity is reduced to normal.
Tests conducted with leading brand names indicated that the curing period is reduced and mechanical properties improved considerably.
+ What about sandstone?
Sandstone, in various pre-cut forms, has been used extensively in the building industry for many years and has tremendous added value. Our country can boast some of the most excellent preserved historical sandstone buildings. However, in the natural state sandstone draws water like a sponge. Although this feature is not detrimental to the quality or life expectancy, sandstone buildings are always cold due to evaporation when the water molecules chill the air. Treatment with PCT 56 restricts absorption thus reducing the chilling effect
+ What about asbestous sheeting substrate composite?
Asbestos sheeting and corrugated sections are composed of Portland cement, fine aggregate and asbestos fibre to improve mechanical properties and durability. During ageing and prolonged atmospheric exposure (wind, hail and rain) the lime is leached from the cement by water and moisture. The mechanical properties are reduced and the asbestos fibre exposed. Release of the asbestos dust fibre into the atmosphere is a severe health hazard when inhalation of the dust can lead to asbestosis in humans. Asbestosis is a chronic disease and is characterized pathologically by interstitial fibrosis and asbestos bodies. Recent laws restrict manufacture of asbestos products, however, many older buildings remain sheeted with asbestos sheeting.
Treatment with PCT 56 will prevent water or moisture penetration, prevent the leaching of the lime and reduce exposure of the asbestos fibre. Painting of the surface with a durable paint will extend the life of the sheets by additional 20 -50 years.
Ease of application.
Low dirt retention.
Protection of assets.
Adds value to assets
+ What about mildew?
Mildew requires a lot of moisture, ideal temperatures and organic fat to grow. However, extensive growth is achieved only when it has a surface to hold on to. A surface treated with PCT 56 has the ability to restrict mildew growth by depriving a hold on to surface
+ What about kitchen ceilings?
Heat, moisture and food fats create the ideal atmosphere for incubation of bacteria and algae. Paint failures are evident!. Gypsom Rhinoboard or asbestos ceilings may be treated with PCT 56 to prevent paint failures.
+ What about domestic shower cubicles?
The perfect shower has yet to be built!!!!Penetrating damp on tile areas are the main cause of paint failures on adjacent walls. Water or moisture penetrates the tile grout and the bottom corners at right angles to the floor. Important: All areas to be treated must be dry and free from any moisture or body fats! Leave for as long as it takes to dry. Spray the entire tile area liberally with PCT 56. Leave for 1 hour and remove excess chemical with a damp cloth. This will prevent white spotting on the surface. On adjacent walls, remove all loose and flaking paint and fill imperfections with a suitable filler. Apply PCT 56 to the contaminated area, leave to cure and commence with painting.
+ May water features be treated with PCT 56?
PCT 56 will also perform in submerged conditions. Due to the high alkalinity growth of algae or aquatic bacteria is prevented.
+ May Koi dams be treated with PCT56?
Maintenance of a Koy dam includes stability of water content and Ph as well as addition of oxygen enhancers. This entire process requires some effort and is expensive. If maintenance is not conducted in accordance with recommendations, PCT will reduce the oxygen content which will be fatal to the fish. Recent failures occurred when it was found that no maintenance was conducted. IN VIEW OF THE RISK PCT 56 MAY NOT BE SPECIFIED FOR KOY DAMS OR ANY WATER FEATURE CONTAINING FISH SPECIES.
+ Why is it not possible to apply Rhinolite to a surface previously treated with PCT56?
Rhinollite has over many years become a generic name. It is a lightweight retarded hemihydrite substance where 2 molecules of compound will mix with 1 molecule water. The product is composed of hydrous Calcium sulfide, lime, natural filters, specialized chemicals and minute mica particles and available to the trade as a white/grey powder. All the ingredients are catalyzed when water is added to achieve a homogeneous paste. Application of the product is specialized and some know how required to create a successful finish. The paste is applied to the cement plaster surface, left for approximately 30 minutes and milked with a wooden trowel to achieve a thin film which hardens to a speckled skin. The water content also acts as a conveyance to ensure that penetration into the cement substrate takes place (to convey the product into the cement surface). If the cement substrate has been treated with PCT 56 prior to application, the water conveyance will be unable to penetrate into the surface resulting In adhesion failure and delamination of the Rhinolite. However, a surface treated with Rhinolite may be successfully treated with PCT 56 WATER REPELLENT TECHNOLOGY.
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