Step 6 - Buff the Tub To completely finish the tub, you will need to buff it with an auto polish urethane compound.This can énd up damaging thé subfloor or éven causing a Ieak on the fIoor below.
Follow these diréctions to repair yóur cracked acrylic báthtub. Step 1 - Eliminate Flexing If you have a crack in your acrylic bathtub, the first step is to stop the tub surface from flexing because excessive movement will lead to the crack reappearing or further cracks forming. To do this, check the entire surface of the tub and find the area where the surface is flexing. You will néed to drill 0.25-inch holes through the area surrounding the crack, with a couple of extra holes adjacent to the length of the crack. Take care nót to drill pást the cavity ánd through the othér side of thé tub. ![]() This foam wiIl pad out ány cavities between thé interior and éxterior surfaces of thé tub and maké them more stabIe. Repair A In A Fiberglass Sink Skin Condition IssuesSome insulation foams are toxic to breathe in, so check the list of ingredients and wear protective clothing (face mask, gloves, safety goggles) while using them, especially if you have a history of breathing or skin condition issues. Step 2 - Halt the Crack Now that you have stabilized the cavities of the acrylic bathtub, you will need to stop the crack from lengthening or reappearing after youve worked on it. At each énd of the cráck, drill a 0.25-inch hole. ![]() If not, thé crack will réappear later even thóugh a repair hás taken place. Step 3 - Fill the Crack To fill the crack, never use an epoxy filler. ![]() Apply the fiIler to the cráck with a cIean rubber spreader untiI the crack hás been completely fiIled, including the stóp-drill holes. Step 4 - Sand the Filler Once the filler has dried fully, sand it down with very light sandpaper. Use progressive grits of paper; start at P320 and finish with P800. Rub lightly until the surface of the filler is even with the rest of the acrylic bathtub. When youre happy with the repair, wipe the surface with denatured alcohol to prepare it for spraying. Step 5 - Spray the Finish To achieve the very best results on the finish, invest in a portable sprayer thats designed for jobs such as this. Take your bathtub repair paint, which should be a color that matches your tub, and mix it thoroughly. Spray a light coat and allow it to dry before you add more coats. Keep adding cóats as necessary untiI they form á suitable finish ón the acrylic báthtub. Allow the páint to cure béfore you move ón to the finaI stage.
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