Stucco Siding Repair: 6 Steps to Better Stucco Exteriors

Making repairs to stucco can be an intimidating process, but if you have noticed areas where the stucco has begun to fall, crack or bubble, then it is in your best interest to fix the area as soon as possible. These are all signs that there is a problem with the way the stucco is adhering to the wood beneath, or that there could possibly be water damage beneath.

Having the right tools and know-how can make this project a simple and rewarding endeavor. The supplies are basic, and can be found at any local hardware store. For this project you will need the following:

  • Plaster trowel
  • Bucket
  • Protective plastic
  • Plain grey coat stucco
  • Paint or color coat additive
  • Siding felt
  • Mesh
  • Hammer
  • Scraper
  • Staple gun

After you have gathered all of your supplies you are ready to take on the challenge of repairing the stucco. If you have not yet purchased your items for this project, and need ideas, you can find free samples and other freebies to help you out.

Stucco Siding Repair

The process for completing this project works well in this order:

1. Clean the area. This is where your hammer and scraper will come in handy. Crumple the current stucco with the hammer. This will cause the stucco to flake off the wall. You can scrape the remaining stucco off the wall in order to make sure the area is clean, and all remaining stucco is removed.

2. Prepare the surface. This is where you will staple the siding felt to the side of the wall, and prepare to attach the mesh. These materials protect the wood surface from weather exposure, while creating a surface for the stucco to adhere to. The mesh will go right over the felt and does not have to have a uniformed pattern, but it must cover the entire area where stucco will be placed.

3. Sling the stucco. At this point you should have mixed the stucco according to the package’s instructions. It should be a gritty texture that is the consistency of a very stiff batch of mashed potatoes. If it is too stiff, then it is too dry and will not set properly; if it too wet, it will run and not remain affixed to the wall. You should be able to dip your trowel into the bucket, scoop stucco out, and literally sling it onto the wall surface. This helps to ensure that the stucco grabs onto the mesh.

4. Smooth the stucco. After the initial coat of stucco has been placed on the wall, you can begin to smooth it out with the trowel. This does not need to be uniform as this is not the final coat. Place lines in the stucco with the trowel in a messy fashion, criss-cross lines, diagonals and so on. This will help the next layer adhere. At this point you should repeat steps three and four one more time.

5. Wait. After the first two coats of stucco have been applied, you should cover them with the plastic that you have purchased. Allow the stucco to dry for approximately 72 hours, or for the time amount recommended by the manufacturer.

6. Finish. After the drying time has passed, you can now apply the final coat of stucco. Depending on the type of pattern or finish that the existing stucco has, you may find that you will have to use another technique in order to mimic the current look. Once the final coat is dry, you can paint the surface. There are also color coat additives that you can add to the mixture of grey stucco, so that you are applying a color coat and painting is not necessary. Either process is effective.

Your repaired stucco section should blend right in with the rest of the stucco, and should also match in color. There are many different techniques on how to complete a final surface, and if you have questions, your local hardware store should be able to help.

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