Preparation

Begin by trimming grass or plants that may be growing over the sides of the driveway surface (use worm drive saw and blade). Sweep off the driveway to remove debris. Be concerned with small leaves or debris (spray water into trees or bushes to cause loose leaves to drop before sweeping) that may drop or blow onto the surface during the application of Polacrete™, as they will leave lines, grooves or marks. Do not hose off at this time, first remove all oil spots and vacuum. Remove oil remover/cleaner, liquid mix, powder mix and silica sandbags from your vehicle and set aside with muriatic acid container(s) and tools. PLEASE READ THE REMAINING DIRECTIONS AND INSTRUCTIONS BEFORE STARTING. STEP 1 – OIL SPOT CLEANING:
Open the oil remover/cleaner container. Begin by pouring a small amount on the center of several oil stains at a time (even spots that you have previously cleaned with another cleaner.) This will prevent wasting remover/cleaner (especially on hot days) that will soak completely in and dry out. Spread over stain and let set for 10 – 15 minutes. Scrub vigorously and repeat as necessary. Be sure all oil residues are removed. If necessary, water test to see if area repels or beads water. Do it again and look for more dirty brown bubbles from hidden residue. If all the oil is not totally removed, Polacrete™ will not penetrate and completely bond on that area and dark discoloration from remaining oil residue may bleed through several weeks after applying Polacrete™. Oil and rust stain discoloration may still remain, but will diminish after the muriatic acid solution is applied. Rinse, brush with water, vacuum up and take to proper disposal site later.

STEP 2 – USE OF MURIATIC ACID FOR SURFACE ETCHING AND CLEANING:
You will need the muriatic acid, medium bristle broom, stir stick, hose and empty bucket. Plan to use at least one gallon of muriatic acid mixed with one to two parts water for 200 to 250 sq.ft. of surface. A simple rule for determining the strength is as follows: If the surface is porous and rough, a weak solution can be used. If the surface is smooth, a stronger solution should be mixed. Following the manufacturer’s safety warnings and instruction, mix one part muriatic acid with two parts water for a weak solution (light cleaning.) Mix one part muriatic acid with one part water for a strong solution (heavy cleaning and light etching.) Stir solution immediately and spread over area immediately (30 seconds) and continue to broom acid over high spots for 5 mins. Use full strength on stubborn ruse spots or concrete that will only clean with full strength solutions.

1. You must always use full and properly designed respirators to avoid breathing acid (follow manufacturer’s instructions)
2. Do not apply acid wash in windy conditions
3. Use caution tape to warn people away from working area
4. Never spread large amounts of any chemical at one time
5. Never use indoors
6. DO NOT WALK ON GRASS WITH ACID ON SHOES!
7. Always block cutter with sandbag and vacuum up residue for disposal

Beginning at the top of the driveway, pour on a section at a time and spread with broom (don’t brush vigorously to clean, acid works best when left alone and on semi dry concrete) quickly (30 seconds) until the entire surface is covered. After approximately 5 – 10 minutes, the foaming will stop, which means the solution has done its job and is becoming inert. Take care not to allow the active solution to run on sidewalks or other concrete surfaces that you do not intend to protect with Polacrete™. If you do, immediately flush area with water. Rinse surface and surrounding area with plenty of water. This dilution will make the solution completely inert and will not harm surrounding surfaces. All plants must be protected with plastic if they are close to concrete. If you get a lot of acid on grass, it will turn it brown, but grass will be green again in 2 weeks. Allow surface to dry and be free from puddling (especially if slab is covered, enclosed or has been subjected to heavy water saturation). At this point, apply TSP per manufacturer’s instructions and thoroughly rinse. An unsaturated slab that is sloped, open to the sun and appears to dry quickly is probably ready for Polacrete™ immediately after TSP washing.

STEP 3 – REPAIRS / GRINDING:
A good and permanent repair of all concrete surfaces is not possible unless you have followed Step 1 completely and been very thorough on the removal of any foreign material, such as oil, paint or any coatings of any kind. Secondly, follow Step 2 if surface is not already rough, porous and clean. Any bumps, pieces of previously dropped old concrete mixes and roughness protruding above the desired surface can be removed with a grinder or with a concrete hammer and chisel. All rough areas, cracks and low areas will first have Polacrete™ mixed in a very thin formulation of the four ingredients mentioned above. Gravity helps penetration, therefore the Applicator must understand that this thin formulation is not going to soak into vertical surfaces (such as cracks, upright posts, etc.) as rapidly as flat surfaces and therefore should be applied with a brush or sponge 2 – 3 times until it is visibly noticeable that this mixture has begun soaking into surface. Applicator must not apply this first thin mixture over more area than you can apply a second, thicker mixture of Polacrete™ Part A within 5 – 10 mins. after applying first thin, penetrating mixture.