Below-Grade Protection
Foundation Waterproofing
When water gets below grade it does not knock first. It shows up as damp stem walls, musty crawl spaces, and efflorescence bloomin...
Foundation Waterproofing details →Planter Box Waterproofing in San Diego County
Built-in planters are one of the most common water intrusion sources we diagnose in San Diego, because they hold irrigated soil directly against walls, decks, and slabs year-round. We waterproof planter boxes so you can keep the landscaping without feeding a leak.
Since 2012CA Lic. #1063501San Diego County
Signs a planter is leaking into your structure
When to call us
- ✓Staining or dampness on the wall below or beside a planter
- ✓Efflorescence on the planter's outside face
- ✓Peeling paint or stucco adjacent to planted areas
- ✓Musty smell in the room that shares a wall with a planter
- ✓Tile or deck surface failing next to a built-in planter
- ✓Soil that stays saturated because the planter cannot drain
The planter problem
A built-in planter is a box of wet soil attached to your house, watered on a schedule, in a climate where nothing else stays wet. Original construction often gave these planters a thin coating and a single drain that clogged years ago. The soil holds moisture against the structure around the clock, and the leak develops so gradually that by the time it shows, the adjacent framing or slab edge has been damp for a long while.
How we fix them for good
We empty the planter, inspect the shell, and repair any cracks or deteriorated concrete. Then the interior gets a true below-grade membrane, carried up the walls and over the top edge where splash and overflow happen, with drains rebuilt so water leaves the box instead of pooling in it. A drainage mat and filter fabric protect the membrane from roots and keep the drain path open before soil goes back in.
Keep the garden, lose the leak
Done correctly, a waterproofed planter is no more threatening to your home than a terracotta pot. You do not have to choose between landscaping and a dry wall, you just need the box built like the piece of waterproofing infrastructure it actually is.
Scope of Work
What planter waterproofing includes
- ✓Soil removal and shell inspection
- ✓Crack repair and surface preparation of the planter interior
- ✓Below-grade rated membrane on floor, walls, and top edge
- ✓Drain rebuilds with root protection and filter fabric
- ✓Drainage mat to keep water moving to the drain
- ✓Coordination on replanting and irrigation adjustments
Pricing, Honestly
What drives the cost
Planter projects are priced by the size and number of boxes, their condition, and drain accessibility. Most single residential planters are compact projects compared to a full deck or foundation job. Where a planter has already damaged the adjacent structure, we scope that repair honestly alongside the waterproofing so nothing gets buried behind new soil.
- ✓Planter size, depth, and number of boxes
- ✓Shell condition and crack repair needs
- ✓Drain routing and discharge options
- ✓Any repair to structure already damaged by the leak
How We Work
Diagnose. Prepare. Seal and verify.
01 / Diagnose
Find the true source
We trace where water is actually entering before anything is quoted. Sealing over a mystery is how the same failure happens twice.
02 / Prepare
Fix what is underneath
Substrate repair, flashing, and slope come before any product goes down. It is the part of the job you never see, and it decides everything.
03 / Seal + Verify
Install the right system
Materials matched to your surface and exposure, installed to spec, checked before we call it done.
Related Services
Often part of the same fix
Slabs, Walls + Surfaces
Concrete Waterproofing
Concrete looks permanent, but it is porous, it cracks, and it moves. We waterproof concrete patios, walkways, walls, and structura...
Concrete Waterproofing details →
Give Water Somewhere To Go
Drainage Systems
Half of the waterproofing problems in San Diego County are really drainage problems wearing a disguise. We design and install Fren...
Drainage Systems details →Straight Answers
Questions we hear about this work
Can I keep my existing plants?
Usually yes. Plants are set aside during the work and can go back once the membrane and drainage are in, though we will flag plantings whose roots are aggressive enough to threaten the new system and suggest alternatives.
Why does my planter leak even though it has a drain?
A drain only helps if water can reach it and if the box itself is sealed. Clogged drain paths and hairline shell cracks are the usual culprits, and both hide under the soil where nobody looks. That is exactly what our inspection uncovers.
Is a plastic liner enough?
Loose liners fail at the seams, punctures, and the top edge, and they trap water against the shell when they do. A bonded membrane carried over the top edge, paired with working drains, is the difference between a fix and a delay.
Should planters against the house just be removed?
Not necessarily. A properly waterproofed and drained planter is safe against a structure. Removal is worth discussing only when the planter design fundamentally traps water with no drain path, and we will tell you honestly if yours is one of those.
Next Step
Get a diagnosis, not a sales pitch
Tell us what you are seeing with your planter box waterproofing project, anywhere in San Diego County. The owner reviews every assessment and every quote.
3930 El Cajon Blvd, San Diego, CA 92105
Mon to Sat: 9AM to 5PM · Sun: Closed
CA Lic. #1063501 · Since 2012
Quoted by the owner. No sales rep follow-up circus.