How to apply one coat of Bonaseal followed by two coats of Mega or Traffic.
If you watch our YouTube video on screening and recoating a floor, skip to the very end where we're actually spreading the polyurethane; that's the best demonstration of our technique we can possibly give you.
Remember that Bonaseal, Amberseal, Mega and Traffic are all water-based products; use water for all cleanup. Do not use paint thinner, turpentine, alcohol or lacquer thinner.
- Use a good vacuum to make absolutely sure there is no dust, debris, or foreign matter of any kind left on the floor. It’s best to use a shop vac or canister-style vacuum that uses a wand with a soft bristle brush attachment rather than the upright vacuum you use for carpet.After you vacuum, wipe the raw wood with a soft, DRY rag (old t-shirts are perfect) to get up the last specks of dust that the vacuum left behind. Then run the vacuum over your dry applicators to eliminate loose fibers. If the room you are about to coat is adjacent to a floor where you don’t want spills or drips, use blue tape to protect it. Tape down some cardboard at your exit door so you have a safe zone to place your sticky mop and paint pad as you back out of the freshly coated area.
- Make sure that at least one window in the room to be coated is open 3" or more and that you can maintain a temperature of at least 60 degrees Farenheit for the duration of the coating and drying process. You will improve air exchange and maximize your cure rate if you turn on a fan (like a bathroom vent fan) in an adjacent room to make sure that the coated rooms are emptied of air four to five times an hour.
- Before you crack the seal, gently agitate your jug of Bonaseal to stir. Open the lid and insert the small plastic strainer into the jug opening.
Slide your coater cover onto the metal t-bar and make sure the t-bar is securely attached to your threaded pole. Stick a clean, dry rag in your pocket so you are ready to deal with drips.
- Start at the wall that is furthest from your exit and runs parallel to the wood grain. Pour a 5-inch-wide puddle that runs the entire length of your starting wall, about 3 inches from the wall. Begin cutting in with the pad painter, but don’t cut in the entire room! Coat a 6-inch border along your entire starting wall and 3 feet along the walls that abut your starting wall. It should look like this:
- Charge up your t-bar with polyurethane by dipping the applicator end in the puddle and then pressing lightly against the floor. Do this several times, until the applicator appears evenly filled with finish, but not drippy (similar to how a paint roller feels as it leaves the roller tray).
- Begin at the top corner of your cut-in zone and gently drag your t-bar at a 30º angle, aiming the center of your 18-inch coater at the center of your puddle of polyurethane, effectively “snow-plowing” the finish in front of the applicator head. Walk in a straight line, parallel to the wall and without stopping, until your t-bar reaches the cut-in section at the far wall. Don’t lean your body weight on the stick; the weight of your two hands on the t-bar is all the pressure you need to lay down the correct amount of polyurethane.
- Lift your t-bar and gently wring it out by pressing it against the floor that is already wet with polyurethane. Start from the cut-in zone and overlap your last pass, again dragging the puddle parallel to your starting wall all the way to the wall at the top. If you’re coating correctly, the puddle will slowly shrink because each pass with the t-bar applicator will leave behind an even film of polyurethane.
- When you reach the end of the area of the original cut-in zone, rest the t-bar with the applicator in the wet polyurethane (leaving it on the dry wood leaves a permanent mark), and cut in another 3 to 4 feet along the walls at the top and bottom of your next coating zone. Pour a fresh line of polyurethane if necessary. Continue alternating t-bar and pad painter until you are 3 feet from your final wall.
- Use your pad painter to cut in along every wall you have left, except for your exit. Starting at the corner furthest from your exit and working a 5-foot section at a time, gently mop the polyurethane on with a back-and-forth motion. Scrape the excess finish down into a puddle at your feet, then go back and blend your coated section into the cut-in zone by pushing the t-bar away from you while you gradually lift it off the ground. Work backward, blending each section into the last, until you reach your exit door. Switch to the pad painter for the last few strokes. Remove your coater from your t-bar and the pad from the pad painter and keep them both soaking, subermerged completely in water until your next coat! If they dry out and crust over they will not spread polyurethane evenly and you'll need to buy new ones.
- Allow the Bonaseal layer to dry overnight or long enough that it can be lightly sanded with 180grit sandpaper on a pole sander or a buffer without smearing. Why? Because waterborne finishes will cause significant grain raise after the first coat, the roughness from that first coat must be sanded down before any subsequent coats are applied, or you'll be able to feel that initial grain-raise through the next two layers of finish.
- Once you have lightly screened the dry Bonaseal, vacuumed up the dust and wiped the floor with a cloth lightly dampened with water, apply your first of coat of Mega or Traffic using the techniques you learned above in steps 4-9. If you are coating with Traffic be sure to only catalyze the amount of finish you need for one coat; the pot life of the catalized Traffic is only four hours.
- After four hours or after the your previous coat is dry enough to walk on without causing a footprint, apply your final coat of Mega or Traffic.
Wait 24 hours after your final coat of polyurethane before allowing foot traffic or furniture back on your floors and wait at least two weeks to replace large area rugs.