Using a deck stain sprayer allows for faster and more even application compared to brushes or rollers, especially on large or complex surfaces like railings and deck boards. To use a deck stain sprayer effectively, ensure proper preparation, fill the sprayer correctly, apply the stain using the right technique, and clean up thoroughly.
Preparation is Key
Before you even pick up the sprayer, thorough preparation of your deck is crucial for a successful staining project.
- Clean the Deck: Remove all furniture, plants, and decorations. Sweep away loose debris. Clean the deck surface using a dedicated deck cleaner and a stiff brush, following the product instructions. This removes dirt, grime, mildew, and old stain/sealer residue. Rinse thoroughly.
- Allow to Dry: The deck must be completely dry before staining. Check the weather forecast. You need good weather for spraying, ideally dry conditions with moderate temperatures and low wind.
- Sand (Optional but Recommended): Lightly sanding the deck can smooth out rough spots and improve stain adhesion.
- Mask Off Areas: Protect areas you don't want stained, such as siding, trim, landscaping, and windows, using painter's tape and plastic sheeting or drop cloths.
Setting Up and Filling the Sprayer
Refer to your specific sprayer's manual for detailed instructions on assembly and operation.
- Mix the Stain: Thoroughly stir the stain according to the manufacturer's instructions. Do not shake, as this can create bubbles.
- Strain the Stain: For best results and to prevent clogs, strain the stain through a paint filter bag or mesh funnel when pouring it into the sprayer reservoir.
- Fill the Sprayer: Fill the sprayer reservoir, making sure not to overfill. Secure the lid tightly.
- Test the Spray Pattern: Before spraying the deck, test the spray pattern on a piece of scrap wood or cardboard. Adjust the pressure and nozzle setting until you achieve a consistent, even fan pattern.
Spraying Technique
Apply the stain with smooth, overlapping passes for an even finish.
- Start with Railings and Vertical Surfaces: It is recommended to start by spraying the railings first then the deck board. This is because it's good practice to work from top to bottom. I like working from top to bottom that way I'm not walking around a wet stain.
- Apply in Sections: Work on a small section of the deck boards at a time.
- Maintain Consistent Distance: Hold the sprayer nozzle a consistent distance from the surface (typically 6-12 inches, check your sprayer's manual).
- Use Overlapping Passes: Overlap each spray pass by about 50% to avoid streaks and ensure full coverage.
- Backbrush or Backroll: Immediately after spraying a section, use a brush or roller to backbrush or backroll the stain into the wood grain. This helps the stain penetrate deeply, removes excess stain, and eliminates drips or puddles, ensuring a more even and durable finish.
- Keep a Wet Edge: Work quickly enough to maintain a wet edge between sections to avoid lap marks.
- Address Drips: Immediately brush out any drips or runs.
Spraying Order Example
| Section to Spray | Order | Reason |
|---|---|---|
| Railings & Verticals | 1st | Work top-down; avoid drips on finished areas |
| Deck Boards | 2nd | Finish horizontally after verticals |
Cleanup
Cleaning your sprayer immediately after use is essential to prevent clogs and damage.
- Empty Excess Stain: Pour any leftover stain back into its original container (if clean) or dispose of it properly.
- Rinse Thoroughly: Fill the sprayer reservoir with the appropriate cleaning solution for your stain (water for water-based, mineral spirits for oil-based). Spray the cleaner through the nozzle until it runs clear.
- Clean Components: Disassemble the nozzle and other removable parts and clean them thoroughly with the cleaning solution and a brush.
- Rinse Again: Rinse all parts with clean water.
- Dry and Store: Allow all parts to dry completely before reassembling and storing the sprayer in a clean, dry place.
By following these steps, you can effectively use a deck stain sprayer to achieve a professional-looking finish.
