Planter Box Waterproofing Guide 🌱

Waterproofing your planter boxes is essential to prevent water damage, protect structural integrity, and extend their lifespan. Using Liquid Rubber DIY products, you can create a long-lasting waterproof barrier, ensuring your planter boxes stay leak-free while keeping your plants healthy.

Why Waterproof Your Planter Boxes?

✔ Prevents Leaks: Seals seams, corners, and joints to stop water damage.
✔ Protects Against Rot & Decay: Prevents moisture from deteriorating wood, concrete, or metal surfaces.
✔ Promotes Healthy Plant Growth: Keeps soil moisture levels stable without water loss.
✔ Extends Lifespan: Ensures long-term durability of your planter boxes.

What You’ll Need

Before starting, gather the following materials and tools:

• Liquid Rubber DIY Waterproof Sealant
• Geo-Textile: For reinforcing cracks, corners, and joints.
• Rapid Cure Spray (Optional): Speeds up curing time.
• Cleaning Tools: High-pressure water blaster and wet/dry vacuum.
• Protection Board (Corflute) (Optional): To protect the sealant before adding soil.
• Application Tools: Brush, roller, or LRDIY spray machine.
• Safety Gear: Gloves

Step-by-Step Instructions

1. Prepare the Surface

• Wash or water-blast the entire planter box surface to remove dirt, debris, and loose material.
• Use a wet/dry vacuum to remove any remaining water, ensuring the surface is completely dry before applying any product.

2. Reinforce Seams, Joins, and Holes

• Pre-cut Geo-Textile to bridge the seams, wall-floor joins, corners, and any existing holes.
• Apply Liquid Rubber Waterproof Sealant over these areas using a brush.
• While the sealant is still wet, embed the pre-cut Geo-Textile into the sealant, making sure there are no wrinkles or air bubbles.
• Once set, spray Rapid Cure Spray to speed up the drying process.

3. Apply Waterproof Sealant to the Entire Surface

• Once dry, apply the first coat of Waterproof Sealant using a brush, roller, or spray machine, covering the entire planter box surface.
• If rain is expected, spray Rapid Cure Spray to help set the product faster.

4. Apply the Final Waterproofing Coat

• Apply a second coat of Waterproof Sealant across the entire planter box for complete coverage. Additional coats can be applied if needed.
• Recommended thickness: 1.5mm dry-film (approximately 2 liters per square meter).

5. Allow to Cure & Protect Before Filling

• Let the Waterproof Sealant cure for 48-72 hours before applying a protection board (corflute).
• Once cured, backfill with soil and plant your greenery!

Additional Tips

• Apply the product in dry weather and avoid temperatures below 10°C or above 32°C.
• If you're growing edible plants, rest assured that Liquid Rubber is non-toxic and safe for use in planter boxes.
• For wooden planters, consider sealing the outside as well to protect against moisture.