Sheetrock 380501 All Purpose Wallboard Joint Compound 62 Lb, Ready Mix

This all purpose joint compound provides overall high performance, as well as superior working qualities and good open time. It offers excellent bond over bead, trim and fastener concealments. This special latex formulation is ideal for embedding paper tape and for filling, leveling and finishing over gypsum panel joints, fasteners, bead and trim. Sheetrock brand conventional weight all purpose joint compound is also excellent for skim coating and hand-applying simple textures. Recommended for use with Mold Tough gypsum panels to achieve a complete mold resistant wall system. Complies with ASTM C475.

• Size: 62 lbs pail
• Ready mix
• Used for embedding and finishing, for hand-applied simple texturing.
• Recommended for laminating and repairing cracks in interior plaster and masonry not subject to moisture.
• Meets ASTM standard C475.

Limitations

• Protect container from freezing and extreme heat.
• Prior to using any epoxy coating over any surface treated with joint compound, consult the epoxy coating manufacturer and follow manufacturer’s specific recommendations regarding the preparation or suitability of substrates for the epoxy coating. Many epoxy coatings exert significant shear stress on the substrate as the strong epoxy film shrinks while curing/drying. This stress can cause the bond of the joint compound to fail, resulting in delamination problems.

Preparation
Position and apply Sheetrock brand gypsum panels in accordance with manufacturer’s recommendations. In cold weather and during gypsum panel joint finishing, temperatures within the building shall be maintained at a minimum of 55° F (13° C). Adequate ventilation shall be provided to carry off excess moisture. Mix contents lightly without adding water. Use directly from container for covering fasteners and corner bead. For taping and finishing joints (especially for use in mechanical tools), thin as necessary. Add water in half-pint increments to avoid overthinning. Remix lightly and test apply after each water addition.

Application
Cover joint with a thin layer of compound and embed paper tape, leaving about 1/32" of compound under feathered edge. Let dry and sand lightly. Apply second coat, feathering approximately 2" beyond first coat. Let dry, sand lightly as required, and then apply third coat, feathering 2" beyond second coat. Sand lightly as required when dry. Finish fastener heads, corner bead and inside corners as required with at least three coats of joint compound, feathered out onto panel faces and finished to a smooth surface.

Decorating
For priming and decorating with paint, texture or wallcovering, follow manufacturer’s directions for materials used. All surfaces, including applied joint compound, must be thoroughly dry, dust-free and not glossy before decorating. A prime coat of Sheetrock brand First Coat™ primer or a good quality interior latex flat wall paint with a high solids content should be applied undiluted and allowed to dry before decoration. Walls to be covered with wallpaper or vinyl wallcovering should be sealed per manufacturer’s recommendation. To improve fastener concealment, where gypsum panel walls and ceilings will be subjected to severe artificial or natural side lighting and be decorated with a gloss paint (eggshell, semigloss or gloss), the gypsum panel surface should be skim coated with Sheetrock brand conventional weight all purpose joint compound to equalize suction before priming and painting, or spray wall with Sheetrock brand Tuff-Hide™ primer-surfacer.