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Project Planter Box

Waterproof your Planter Box in 4 simple Stages

Stage 1:

Power Wash

Wash/water-blast the entire surface.

Stage 2:

Detailing

Apply Waterproof Sealant with brush to seams, joints and holes before embedding the pre cut Geo-Textile. Ensure to also apply Waterproof Sealant to any surface rust, pipes and any railing bases - allow to cure.

Stage 3:

2 Coats of Waterproof Sealant

Once dry, apply 2 - 3 coats of Waterproof Sealant with brush, roller or LRDIY spray machine to full surface of the Planter box surface area. Allow 24h between coats.

Stage 4:

Protection Board and back filling

IMPORTANT - Waterproof Sealant must be cured - 48-72 hours, prior to applying protection board (corflute) and back filling with dirt.

All Products you need to Waterproof your Planter Box

Geo Textile Roll for sealing cracks, holes, vents, joints, seams and more
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Geo Textile

$19.95

15L bucket of Liquid Rubber DIY Waterproof Sealant for waterproofing and restoring roofs, gutters, retaining walls, and more
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Liquid Rubber DIY Waterproof Sealant

$54.99 $61.49

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Rapid Cure Spray

$15.95

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.
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Our commitment to quality is reflected in the 10-year warranty

Our products are non-toxic, eco-friendly, and VOC-free

You won't find a better price-quality ratio anywhere else.

Save money long-term. Prevent costly repairs and replacements.