Mix and apply setting type joint compound to exterior drywall.
Setting-type joint compound is ideal for exterior construction. Exterior jobs need a durable joint compound. Setting-type joint compound dries hard, resists moisture and requires just a few coats to get the job done. Outdoor joint compound application is similar to indoor applications. But watch out for the weather. Avoid applying joint compound on humid, rainy days or when temperatures dip below 50 degrees Fahrenheit.
Instructions
1. Mix the joint compound with water in a bucket. Add water incrementally. Stir the joint compound to an even consistency after each addition. Scrape the sides and the bottom of the bucket as you mix to keep the mixture consistent. Stop adding water when the joint compound is the consistency of thick peanut butter.
2. Cover the drywall joint with a thick layer of joint compound using a 4-inch mud knife.
3. Leave the joint compound to set for the manufacturer-recommended amount of time. Read the label carefully as the set time for joint compounds vary widely. Most setting-type joint compounds come in 20-, 45- and 90-minute set times.
4. Place a strip of joint tape over the drywall joint.
5. Apply a thin layer of joint compound over the joint tape. Draw the mud knife firmly over the joint tape.
6. Leave the joint compound to set for the manufacturer-recommended amount of time.
7. Apply a second thin layer of joint compound with a 6-inch mud knife. Extend it 2 inches beyond the first layer.
8. Leave the joint compound to set for the manufacturer-recommended amount of time.
9. Apply a second thin layer of joint compound with an 8-inch mud knife. Extend it 2 inches beyond the first layer.
10. Leave the final layer of joint compound to dry for the manufacturer-recommended amount of time.
11. Sand out any uneven spots in the joint compound with 80-grit sandpaper.
12. Paint the drywall with one to two coats of exterior latex paint to protect the joint compound from moisture.
Related posts
Joint compound is used to hide drywall seams.Covering a ceiling takes multiple drywall sheets. Some of the sheets are cut to fit smaller areas. A seam forms where each drywall sheet touches anothe...
After installing drywall, this worker should feather the joint compound to disguise the seams.Feathering joint compound refers to spreading compound over the seams of drywall. After drywall has be...
Joint compound has numerous uses around the house. It is often used to fill in small imperfections on walls or divots caused in drywall because of door handles hitting them. On occasion the joint...
Drywall sheets are sealed together with tape (either paper or mesh) and joint compound, which is a form of plaster. The compound is laid over the tape in three layers, each one successively wider...
Taping out corners requires a slightly different technique.Drywall panels give your walls a smooth look, suitable for painting or for hanging wallpaper. During installation, the panels are cut and...
