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One of the most common construction tasks homeowners must complete is sealing plywood edges. Not only does this make the plywood more durable, but it also helps to protect it from moisture and other damage. While it may seem daunting, sealing plywood edges is quite easy – as long as you have the right tools and supplies.
To seal plywood edges, sand the rough edges with sandpaper. Next, apply a thin layer of wood sealer to the edges using a paintbrush. Be sure to work the sealer into all of the cracks and crevices. Once the sealer is dry, apply a second coat for added protection. If you want to protect your plywood edges further, apply a primer layer before sealing. This will help to create an additional barrier between the plywood and the elements.
Sealing plywood edges is a simple task that anyone can do – and it’s an essential step in ensuring that your plywood lasts for years to come.
When To Seal Plywood
- When painting your plywood surface
- When you want to cover plywood edges
- When you want to make plywood more waterproof
- When you want to make plywood surfaces more resistant and durable
- When you want to make plywood edges smooth
- When preparing plywood for painting
- When the plywood is used outdoors
Reasons You Should Seal Plywood Edges
- To protect plywood edges from moisture and damage
- To ensure that the plywood does not warp, twist or shrink in any way
- For a more professional look and feel to your project
- When you want to cover up sharp corners of the sheathing boards
- To make your project more durable and long-lasting
Major Sealants Used to Seal Plywood Edges
The following sealants are the best way to seal plywood edges:
a) Filler and sealer
This product fills all the gaps and seals the surface of the wood.
b) Water repellent
This type of sealant protects plywood surfaces from dampness, moisture, and water damage.
c) Paintable caulk
Caulk works to protect your project from heat loss or solar gain as well as wind-driven rain
d) Oil-based caulk
An oil-based sealant protects the surface of your project from dampness, moisture and water damage extremely well.
e) Silicone oil sealer
Seal up all types of seams with silicone oil sealer to ensure perfect protection against dampness and water damage.
g) Silicone and latex caulks
These types of sealants protect plywood surfaces from dampness, moisture, and water damage.
h) Paint or varnish
When you are sealing plywood, it’s best to use paint or varnish.
RELATED: How To Seal Plywood For Exterior Use
Factors To Consider When Choosing the Best Sealant
- What Kind of Project Are You Working On? – If you are working on a project that will be exposed to the elements, you will need to choose a water- and weatherproof sealant.
- How Much Time Do You Have to Complete the Project? – If you are working on a time crunch, you must choose a sealant that dries quickly.
- Where Will Your Plywood Be Used or Installed (Indoors/Outdoors)? – If you are using your plywood outdoors, then you will need to choose a sealant that is UV resistant.
- Is There a Lot of Moisture in That Area? – If you are working in an area with high humidity, then you must choose a mold and mildew resistant sealant.
- Do You Want This Sealant to Last for Multiple Years and Seasons, Even If They’re Harsh? – If you want a long-lasting sealant, then you will need to choose one that is durable and weatherproof.
- Do You Want the Surface to Be Smooth and Easy to Clean/Wipe Down, Or Do You Want It to Look Like a Natural Wood Board? – If you want a smooth surface, then you will need to choose a self-leveling sealant.
Tools You Will Need to Seal Plywood Edges
The following tools will help how to seal plywood edges for outdoor use:
- Razor blade for cutting around corners
- Caulking gun
- Silicone oil, caulk, or spray-on sealant
- Ladders or stepladder
- Sandpaper
- Paint brush, roller, or sprayer
- Roll of tape (for protecting the edges from excess paint)
- Sponge/cloth rag for finish work (optional)
- Hammer
- Drill and drill bits
- Plywood Edge Sealer
- Bucket of Water
How To Seal Edge Of Plywood 8 Easy Steps
The following are eight easy steps on how to seal edge of plywood ;
Step 1: Read the manufacturer’s instructions on your sealant or caulk.
Step 2: Tape off all areas that you don’t want to be painted with blue painter’s tape and cover up any windows, doors, or fixtures as well as plants and other structures in your way.
Step 3: Clean down plywood surfaces before applying a thin sealer, caulk, or primer coat.
Step 4: Apply the sealant with a paintbrush. If you are using silicone oil, silicone spray is best for applying on plywood edges.
Step 5: Smooth out the sealant with a damp cloth or sponge.
Step 6: Allow the first coat to dry before applying another one for maximum protection.
Step 7: Apply a coat of paint, varnish, or another sealant to your plywood surfaces for protection from the elements.
Step 8: In an outdoor area where you want to keep moisture away from your project, use silicone oil as it is truly waterproof and will not wash away under any conditions.
Repeat until you have applied three coats of sealer, caulk, or primer. If your project requires more than three layers, allow each layer to dry completely before applying another one.
How To Seal Edge Of Plywood for Painting
What you’ll need:
- A wood filler
- A putty knife
- Sandpaper
- Paintable caulk
- Caulk gun
- Paintbrush
Step 1: Prep the Surface.
Use a putty knife to fill any holes or cracks in the plywood with wood filler. Once the filler is dry, sand the surface until it’s smooth.
Step: Apply Caulk.
Run a bead of paintable caulk along all the edges of the plywood. Use your finger to smooth it out as you go.
Step 3: Let Dry.
Allow the caulk to dry for at least 24 hours before painting. This will ensure a smooth, even finish for your paint job.
Step 4: Paint the Surface.
Use a paintbrush to apply paint to the surface of the plywood. Start with a primer, then follow up with a coat or two of paint in the color of your choice.
Step 5: Let Dry.
Let the paint dry for at least 24 hours before using the plywood. This will ensure that the paint is fully cured and won’t chip or peel off.
RELATED: How to Seal Birch Plywood
Benefits Of Sealing Plywood Edges
It is essential to seal plywood edges for many reasons. Here are six benefits of sealing plywood edges;
- Sealing plywood edges prevents moisture damage.
- Sealing protects against rot and mold.
- Sealing helps keep pests out.
- Sealed surfaces are easier to clean and maintain.
- Sealed edges last longer than
Checklist Related To How To Seal Edge Of Plywood
- Apply sealant with a paintbrush or caulking gun.
- Protect surrounding areas with tape and plastic sheeting.
- Clean down surfaces before applying sealant for best results.
- Apply a thin sealer, caulk, or primer coat to your project (up to three coats).
- Allow each layer of protection to dry completely between applications.
- Allow your project to dry completely before using or installing it.
Tips To Seal Plywood Edges
- Do not apply too much sealant.
- Be sure to use a paintbrush or roller to smooth and even apply the product on your project.
- Clean down surfaces before applying sealer, caulk, or primer so that it adheres well. Be sure all dust, dirt, and debris are removed from plywood edges.
- Allow each layer of protection to dry completely before applying the next one.
- Use masking tape and plastic sheeting when protecting surrounding areas from excess sealant or caulk.
- Be careful not to allow too much moisture in contact with plywood edges as it can damage your project over time.
- If you are working inside, use a respirator mask to protect your lungs from the strong odors of silicone oil or caulk.
- Apply sealant with a paintbrush for smooth application on the edges of plywood surfaces.
Do’s and Don’ts of Sealing Plywood Edges
Do…
- Read all manufacturer’s instructions before beginning your project.
- Test the sealant on a small, hidden area before applying it to your project.
- Use a respirator mask if working with strong odors inside.
- Use ladders or stepladders for hard-to-reach areas.
- Wear gloves to protect your hands.
- Use drop cloths or old sheets to protect surfaces from spills.
Donts
- Apply too much sealant as it can be difficult to remove later.
- Allow sealant, caulk, or primer to come into contact with surfaces that you don’t want to be protected as they can be difficult to remove.
- Use a power washer to clean down surfaces, which can damage the plywood.
- Forget to allow each layer of protection to dry completely before applying the next one.
Pros And Cons of Sealing Plywood Edges
Pros
- Silicone oil is truly waterproof and will not wash away under any conditions.
- Protects plywood surfaces from dampness, moisture, and water damage giving them a tough exterior.
- Seal up all types of seams with silicone oil sealer to ensure perfect protection against dampness and water damage on the water’s outer surface.
Cons
- The strong odor of silicone oil can be very hard to work with.
- You will need to protect surrounding areas from excess sealant or caulk when working indoors.
Precautions When Sealing Plywood Edges
The following precautions are taken on how to seal the edges of plywood:
- Ensure the surrounding areas are protected from excess sealant or caulk when working indoors.
- Wear protective clothing and a respirator mask if you are working inside.
- Wear rubber gloves for protection against strong odors of sealant, caulking, or primer products.
- Ensure your project is completely dry and clean before applying the first sealant, caulk, or primer coat.
- Be sure to use a paintbrush or roller for smooth and even application of product onto plywood surfaces.
- Do not apply too much sealant at once as it can get messy and dry unevenly on your project.
- Ensure you allow each protection layer to dry completely before applying the next one.
- Be certain that you apply sealant, caulk, or primer with a paintbrush for smooth and even application on plywood edges.
- Do not allow too much moisture in contact with your project as it can cause damage over time.
FAQs
How Long Does Sealant, Caulk, or Primer to Dry?
It is essential to allow each layer of protection to dry completely before applying the next one. Depending on the product you are using, it can take 30 minutes to 24 hours for sealant, caulk, or primer to dry completely.
What Is the Best Way to Apply Sealant, Caulk, or Primer?
For best results, using a paintbrush or roller for smooth and even application of the product on your project is essential.
What Are Some Tips for Using Silicone Oil Sealant?
When using silicone oil sealant, it is essential to wear rubber gloves for protection against the strong odor. In addition, be sure to protect surrounding areas from excess sealant or caulk when working indoors.
How Do I Protect Surrounding Areas from Excess Sealant or Caulk?
One way to protect surrounding areas is to use masking tape and plastic sheeting. This will help to prevent any accidentally contact with the sealant or caulk.
What Should I Do If I Accidentally Get Silicone Oil on My Skin?
If you accidentally get silicone oil on your skin, it is essential to wash the area immediately with soap and water.
How Often Should I Apply Sealant, Caulk, or Primer?
Depending on the project you are working on, it is essential to reapply sealant, caulk, or primer as needed.
Will Silicone Oil Wash Away in The Rain?
No, silicone oil is truly waterproof and will not wash away in the rain.
How to Seal Plywood Edges: Conclusion
Sealing plywood edges is a great way to protect your project from water damage. Be sure to follow all manufacturer’s instructions, use a respirator mask if working indoors, and allow each layer of protection to dry completely before applying the next one. Use a paintbrush or roller for smooth and even application of sealant, caulk, or primer on plywood surfaces. Do not apply too much sealant at once, as it can get messy and dry unevenly on your project. Be sure to protect surrounding areas from excess sealant or caulk when working indoors.
RELATED: How to Seal Plywood for Outdoor Use In 4 Easy Steps
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https://www.youtube.com/watch?v=ZLaNO32Hrcs
https://handymansworld.net/how-to-waterproof-plywood/
https://www.woodworkersjournal.com/sealing-plywood-edges-paint/
https://vinawoodltd.com/news/how-to-seal-plywood-for-outdoor-use/
https://woodworkingplansrevealed.com/sealing-plywood-edges-for-exterior-use/
