Sealing a planter box

Protect Your Planters From Water Damage

Sealing a planter box

Protect Your Planters From Water Damage

Time to Complete 48 hours
Difficulty Level Beginner
Products Needed 2
Build your planter box kit

Ultimate planter box protection

Waterproofing your planter boxes is an important step in making sure your boxes are intact for many growing seasons to come. Foundation sealant creates a waterproof membrane resistant to moisture and elements, in addition to fertilizers and other chemicals found in soil. Sealant is safe for inedible plants.

Real Customers Sealing their Planter Boxes

Happy Green Thumb
What a great idea! I stumbled across this product and coated the inside of my new wooden planter boxes. I recommend anyone sick of their planters deteriorating over time, use Liquid Rubber to help preserve them!
Jennifer McDonaldPlanter Box Waterproofing
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Real Customers Sealing their Planter Boxes

Happy Green Thumb
What a great idea! I stumbled across this product and coated the inside of my new wooden planter boxes. I recommend anyone sick of their planters deteriorating over time, use Liquid Rubber to help preserve them!
Jennifer McDonaldPlanter Box Waterproofing
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Build Your Planter Box Kit

Choose your options to find the right products for your kit.

Choose Your Sealant

Choose Your Surface

How many linear feet of seams, joints, vents... do you need to bridge with Geotextile?

Feet

How many linear feet of seams, joints, voids… between 1/8”- 1/2” do you need to fill with Sealant & Adhesive Caulking?

Feet
5

Calculate Your Project Size

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Choose Products

Find your planter box products below and add to cart!

Foundation Sealant Basement Coating

Foundation Sealant Basement Coating

Heavy duty waterproofer. Not meant to be exposed to UV/Sun long term. Only comes in Black. Not meant as a walking surface.
Deck and Patio Cleaner

Deck and Patio Cleaner

Safely cleans and brightens your surface and helps prepare for coatings.
Geo-Textile

Geo-Textile

Reinforces seams, joints, vents. Embedded into the coating using the 3 course method. Similar to doing a drywall joint.
Sealant & Adhesive Caulk

Sealant & Adhesive Caulk

Can be used as an adhesive, sealant and crack filler. Will not shrink back when curing.
Concrete Etch

Concrete Etch

Cleans and opens concrete pores to promote better adhesion. Easier to use than an acid etch product.
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Foundation Sealant Basement Coating Deck and Patio Cleaner Geo-Textile Sealant & Adhesive Caulk

How to Seal a planter box

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Planter Box Gallery

See how homeowners are protecting their planters
Gallery Slides
Planter box sealed internally with Foundation Sealant
Sealed Planter box

Questions About Sealing a planter box

  • You will need Geotextile for seams and joints as well as Multipurpose Primer and a Sealant such as Foundation Sealant, Color Sealant or Waterproof Sealant.

  • It is recommended to remove oil based or recently applied coatings.
    You can apply over most acrylic/latex, polyurethane, alkyd paint, epoxy paints/coatings with the use of our Liquid Rubber Multi-Purpose Primer and using proper cleaning/preparation techniques. Keep in mind that when you apply over an existing coating or paint, if that coating/paint peels, our coating will peel with it as it is bonded to the existing coating/paint and not directly to the substrate.

  • US - Delivered in 3-5 business days
    CAN - Delivered in 3-7 business days
    UK - Delivered in 2-3 business days

Need some help?

Our team of experts are standing by to help make sure your project is a success. 

Why Liquid Rubber?

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  • Free Returns

  • Over 1 Million Gallons Sold