Replacing plaster with drywall is a practical solution for improving the aesthetics and functionality of your walls. The process involves removing the old plaster, preparing the area, and installing the new drywall.
Here’s a step-by-step guide on how to complete this project effectively, ensuring a smooth and professional finish.
Step 1: Prepare The Area For Plaster Removal
Before you start removing plaster, it’s important to prepare the room properly.
1. Clear The Room
- Remove furniture and cover floors: Clear the room to create enough space to work, and cover the floor with drop cloths or plastic sheeting to catch dust and debris.
- Remove fixtures: Take off any light switch covers, outlet covers, or any other fixtures on the walls. This prevents damage during the removal process.
2. Safety Measures
- Wear protective gear: Use safety goggles, a dust mask, and gloves to protect yourself from dust and debris while working.
- Turn off electricity: If you are working near electrical outlets, it’s a good idea to turn off the electricity at the breaker to avoid any accidents.
Step 2: Remove The Plaster
Removing plaster can be a messy job, but with the right tools, you can handle it effectively.
1. Loosen The Plaster
- Start at a corner or crack: Use a hammer and crowbar to loosen the plaster from the lath (the wooden slats behind the plaster). If the plaster is intact, cut around a corner to start peeling it off.
- Use a utility knife: For tougher areas, you may need to use a utility knife to score around the plaster edges before pulling it off.
2. Remove The Lath
- Pull out the lath: After the plaster is removed, use the crowbar to pry off the lath. Be mindful of any nails or staples that might be securing it to the studs.
- Inspect the studs: Check that the wall studs are in good condition and free of any debris before installing the drywall.
3. Clean The Wall
- Remove dust and debris: Sweep or vacuum any remaining dust or debris from the studs and the surrounding area. This will ensure proper adhesion for the new drywall.
Step 3: Prepare The Wall For Drywall Installation
Once the plaster and lath are removed, you need to prepare the wall for the new drywall.
1. Measure And Mark The Wall
- Measure the wall dimensions: Using measuring tape, determine the height and width of the wall to ensure the drywall sheets fit.
- Locate the studs: Use a stud finder to locate the wall studs. Mark their position on the wall with a pencil. This is essential for securing the drywall sheets.
2. Optional: Install Support Beams
- Install additional supports: If the studs are too far apart for proper drywall support, you may need to add horizontal support beams or battens. This will help ensure that the drywall is secured correctly.
Step 4: Install The Drywall Sheets
Now that the wall is prepared, it’s time to install the drywall.
1. Cut The Drywall To Size
- Measure and cut drywall sheets: Use your measurements to cut the drywall sheets to fit your wall. Typically, drywall comes in 4-foot by 8-foot sheets, but it can be cut down as needed.
- Use a utility knife: For straight cuts, score the drywall with a utility knife, then snap it along the scored line.
2. Attach The Drywall To The Studs
- Position the drywall: Lift the drywall sheets into place and align them with the studs.
- Secure the drywall: Use drywall screws to attach the sheets to the studs. Drive the screws just below the surface of the drywall to prevent breaking the paper layer.
- Check alignment: Make sure each sheet is level and properly aligned with the adjacent sheets.
Step 5: Tape And Mud The Seams
To ensure a smooth finish, you need to tape and mud the seams between the drywall sheets.
1. Apply Drywall Tape
- Place the tape on seams: Apply drywall tape over the seams where two sheets of drywall meet. This helps prevent cracking and reinforces the seams.
2. Apply Joint Compound (Mud)
- Mud the seams: Use a drywall knife to apply a thin layer of joint compound over the taped seams. Smooth it out as evenly as possible.
- Allow it to dry: Let the mud dry completely before moving to the next step. Drying time can vary depending on the humidity and thickness of the mud layer.
3. Sand The Mud
- Smooth out the surface: Once the joint compound has dried, use a sanding block or drywall sander to smooth out the seams. Sanding helps eliminate bumps and imperfections.
- Apply additional layers: If necessary, apply additional layers of joint compound, allowing each layer to dry and sanding it smooth between coats.
Step 6: Finish The Drywall
The final steps involve finishing the drywall and making it ready for painting.
1. Apply A Final Coat Of Joint Compound
- Final smoothing: Apply a thin final coat of joint compound to ensure the seams are completely smooth and even.
- Sand again: After the compound has dried, sand the surface again to remove any rough spots or imperfections.
2. Prime And Paint The Drywall
- Prime the drywall: Apply a primer coat to the drywall to help the paint adhere better and provide a more even finish.
- Paint the drywall: Once the primer is dry, apply your desired paint colour. You may need two coats for full coverage.
Step 7: Clean Up And Reinstall Fixtures
Once the drywall is in place and painted, it’s time to clean up and reinstall any fixtures.
1. Clean The Area
- Remove dust and debris: Sweep or vacuum any dust from sanding and painting. Wipe down the walls if needed to remove any residue.
- Dispose of the old plaster and lath: Properly dispose of the old plaster and lath per local regulations.
2. Reinstall Fixtures
- Replace light switch and outlet covers: Reinstall any light switches, outlet covers, and other fixtures that were removed before starting the project.
- Reinstall shelves or fixtures: If you removed shelves or other items from the walls, reinstall them once the drywall is finished.
Tips For Replacing Plaster With Drywall
- Check for moisture: Before replacing plaster with drywall, ensure there is no moisture or water damage in the wall. Moisture can cause mould or mildew to grow behind the drywall.
- Use the correct drywall type: If you are working in a high-moisture area like a bathroom, consider using moisture-resistant drywall to prevent future issues.
- Be patient with mudding: Don’t rush the mudding process. Applying multiple layers and allowing proper drying time is essential for achieving a smooth finish.
- Consider professional help: If you’re unfamiliar with drywall installation or if the job seems overwhelming, it may be worth consulting a professional to ensure a high-quality result.
Conclusion
Replacing plaster with drywall is an achievable project with the right preparation, tools, and patience. By following the steps outlined above, you can transform your walls into smooth, modern surfaces ready for paint. Taking the time to carefully remove the plaster, prepare the wall, and finish the drywall properly will ensure long-lasting results.
Frequently Asked Questions
How Long Does It Take To Replace Plaster With Drywall?
The process of replacing plaster with drywall can take anywhere from a few days to a week, depending on the size of the room and the complexity of the project. Most of the time is spent on removing the plaster, preparing the wall, and allowing time for the joint compound to dry between coats.
Can I Install Drywall Over Old Plaster?
It is possible to install drywall over existing plaster, but it’s generally not recommended unless the plaster is in good condition. If the plaster is cracked or damaged, it’s better to remove it entirely before installing drywall to ensure a solid and secure surface for the new material.
What Type Of Drywall Should I Use For My Project?
For most interior walls, regular drywall is suitable. However, if you are working in a bathroom or kitchen where moisture is a concern, consider using moisture-resistant drywall (often green or purple). This type of drywall is designed to prevent mould growth and other moisture-related issues.