Durazzo™ is a state-of-the-art, pre-blended pool finish designed to provide an exceptionally smooth, colorful, and long-lasting surface. Your pool can become an extension of your dreams. Durazzo pool finishes create a rugged aesthetic and exceptionally smooth exterior to transform your pool into an elegant display of natural beauty. And if you are so inclined, you can even custom blend our premium finish to invent an exquisite poolscape that truly begets originality.
Examine pool surfaces to identify conditions that might interfere with the proper bonding of coating. Look for algae, mold, mildew, dirt, paint, mortar droppings, efflorescence, patching compounds, loose tile, cracked plaster, etc. Clean pool surfaces of all material that might interfere with the proper bonding of coatings. Clean with high-pressure water or by sandblasting. Wash with chlorine until algae, mold, and mildew are gone. Remove oil and grease spots using trisodium phosphate or equivalent and water; soak if necessary. Remove all cleaning solutions via high pressure- washing. Identify hollow spots in plaster by sounding. Remove and repair all hollow and delaminated plaster. Saw cut an area three (3) inches around bad spots and remove plaster inside the saw cut. Undercut the edges of the remaining plaster. Fill holes with specified patching cement (SGM Mortar Mix and SGM Southcrete™ 25 Acrylic Admix) to level of existing plaster. Remove loose tile and fittings; undercut existing plaster two (2) inches below the tile line, and around return lines and fittings to a depth of ? inch. Stop water penetration from the outside pool. Plug cracks and leaks around fittings using hydraulic cement (SGM Dynamite Pool Patch). Etch the cleaned surface with a muriatic acid solution. Use concentration necessary to clean and roughen the surface; smooth surfaces may require higher concentration. Neutralize surface with a solution of baking soda and water to eliminate acid residue, which can cause bond failure. Remove remaining acid solutions via high pressure-washing. Plug pool inlets and outlets to prevent clogging with expandable plugs or threaded caps. Mark location of fittings using tape on coping or on a measured drawing. Place the sump pump at the main drain to remove all running and standing water. Do not begin installation until the concrete pool shell has cured at least twenty-eight (28) days. For renovation projects (plastering over an existing plaster pool finish) and poured or formed concrete shells apply SGM BOND-KOTE® as directed. Allow BOND-KOTE to cure for at least six (6) hours before plastering. Plaster should be applied to BOND-KOTE within three (3) to five (5) days. If left for a longer period before the finish is applied, ensure BOND-KOTE is clean and free of dirt, efflorescence, and other contaminants. If necessary, clean BOND-KOTE by brushing vigorously while spraying with water; chlorine may be used as needed.
Durazzo® is made in batches of 4,000 to 20,000 lbs. (1,800 to 9,000 kg) using natural ingredients. For this reason, there will be variations in shade between batches. Batch numbers are printed on the ends of every individual bag. It is important the user follow these instructions carefully to ensure the most consistent color throughout the pool.
Each 80 lbs. bag will cover approximately 22—25 sq. ft., to a thickness of minimum ? inch to ½ inch. Surface roughness affects coverage rates.
Start the mixer and add Durazzo as quickly as possible to ensure that all the material has the proper mix time. Mix for a minimum of five (5) minutes but no more than ten (10) minutes. This ensures even distribution of aggregates and increases the working time of the plaster. Insufficient mix time will result in uneven setting and shade variations. Too much mix time will produce an overall weaker plaster and may entrain undesirable air bubbles. As a rule of thumb, mix for only the amount of time required to produce a consistent, homogenous mix. Calcium chloride may be used as an accelerator. It must be fully dissolved in the water allowing impurities to settle out. Pour off the solution from the top being careful not to add impurities to the mix. The impurities found in calcium chloride flake and pellets have been known to cause discoloration in pool plaster. No more than two percent by weight of cement (about ½ lb. per bag) can be used. Overuse may cause discoloration.
Although it is not necessary to use a plaster pump, many contractors do. Included here are some helpful hints for successful pumping. Increase the size of the pump manifold from three (3) inches to four (4) inches. Change the valve ball from plastic to steel to improve longevity. Set the plaster pump to the lowest gear by moving the belt. Always begin pumping with a full stroke on the main piston. This is accomplished by advancing the wheel until the cam is at its highest position. Prepare a slurry of cement and water or pump aid and run it through the pump first to prime the pump and lubricate the hoses. Pour the mixed plaster slowly into the pump hopper. Do not pour all the material in at once. Agitate the material in the hopper to prevent separation of the cement and aggregate. Avoid unnecessary stopping during the pumping process. Durazzo aggregate will tend to settle in the pump manifold and hoses when the pump is stopped. Agitate the remaining material left in the hopper to reduce clogging. Do not try to clear a blockage using the pump. Disassemble and clean the manifold and hoses when clogged. Do not over-water mix. This will only cause the material to separate, clogging the pump and hoses.
The substrate should be cool and damp but not dripping wet. Mist shell with cool, clean potable water. Non-absorbed water may be removed by using sponges and/or air. Standing water will weaken Durazzo and may cause washouts.
Discard unmixed material (lumps). Apply plaster liberally with the flat side of the trowel using sufficient pressure to key in a scratch coat on the vertical surfaces. Beginning with the shady walls and working to the sunny walls, trowel a scratch coat on the walls and allow to set up until it becomes tacky. The set time will vary according to temperature and humidity. Once the scratch coat has become tacky, apply a finish coat to the entire pool surface beginning in bowl area and working toward the shallow end, troweling and blending walls and floor together to achieve a seamless appearance while working to a final thickness of one-half ((´) inch (10 mm—12 mm). Uniform troweling will help to ensure even exposure, reduce washouts and produce a comfortable slip-resistant finish. The technique of “slick troweling” is recommended. During the application, make several passes with pool trowels to compact the aggregate and ensure a smooth dense finish. In this process, the cement paste is brought to the surface during troweling and is removed with the trowel. This produces a slick surface and minimizes the exposure needed. Small amounts of lubrication water may be necessary for smoothing out and compacting the finish in this process. The aggregate can be seen through a thin film of cement paste after troweling is complete. Special attention must be given to the filling in of spike holes. The applicator must be careful to fill all spike holes with Durazzo aggregate to avoid visible spike holes. Extra care must be taken to ensure proper troweling in the coves and corners. Specialty trowels are required for these areas. Insufficient troweling in these areas will result in roughness and washouts (loss of cement and aggregate) during the exposure process.
Once you have completed slick troweling the entire pool surface. Allow the Durazzo finish to cure overnight. The following morning start by acid washing the surface with muriatic acid and water. Start with a fifty (50) percent acid, fifty (50) percent water solution and adjust the concentration as needed. The acid solution should be just strong enough to remove most of the cement paste from the surface. Upon completion of acid wash, rinse pool shell down thoroughly. Now you are ready to polish. Proper safety equipment must be worn at all times. Begin polishing the walls first and then the floor. Following this procedure will minimize the risk of falling on the slick wet Durazzo surface. Start by using a 70-grit Hone Diamond Disk and lightly polish the entire pool surface. In most cases, one pass is sufficient to produce a smooth surface however in high contact areas such as swim outs and spas a second pass with a 120-grit Hone Diamond Disk may be required. Dispose of wash solution according to local requirements.
In accordance with National Plasterers Council (NPC) standards, it is recommended that the following pool and spa water chemistry conditions be maintained on an ongoing basis for the longevity of Durazzo interior pool and spa finish. These values are important to prevent corrosion, deterioration, discoloration, scaling or other problems. For more information refer to your local agency having jurisdiction or NPC. Follow recommended fill and balancing procedures to ensure a successful start-up.
Maintain the water chemistry using the Langelier Saturation Index (LSI) maintained between 0.0 and +0.3.
Product is alkaline on contact with water. Use paddle for mixing to avoid splashing into eyes or contact with skin. During mixing or application avoid contact with eyes. In case of such contact, flood eyes repeatedly with water and CALL A PHYSICIAN. Wash thoroughly after handling and before smoking or eating. Do not take internally. CONTAINS FREE SILICA — DO NOT BREATHE DUST. Prolonged exposure to dust may cause delayed lung disease (Silicosis).
WARNING: This product may expose you to chemicals, including silica, which the State of California recognizes as a cause of cancer. For more information, visit the Proposition 65 Warnings Website (www.P65Warnings.ca.gov). Use NIOSH approved masks at all times to handle silica dust. KEEP OUT OF REACH OF CHILDREN.