Balcony Waterproofing
Balconies sit over living space, framing, and neighbors below. When a balcony leaks, the damage rarely stays on the balcony — which is why getting the waterproofing right matters more here than almost anywhere else.
Above Living Space
Water that gets through a balcony often ends up in the ceiling, framing, or unit below. The stakes are higher than a ground-level deck.
Thresholds & Railings
Door thresholds, railing bases, and wall junctions are the most common leak points — and the details that decide whether it works.
Condo & Apartment Ready
We work on individual units and on multi-unit buildings, scoping around tenants and building access where needed.
Balcony Waterproofing Situations
A balcony leak is usually discovered from below. By the time water shows up as a stain on a ceiling or in the unit underneath, it has typically been traveling for a while. That is why balcony waterproofing tends to be as much about finding the entry point as it is about applying a new system.
Entries are often at the edges. The field of the balcony is rarely where water gets in. It enters at door thresholds, railing penetrations, wall junctions, and drains. If those details are not addressed, waterproofing the flat area alone will not stop the leak.
Coordination matters in occupied buildings. For condos and apartment buildings, work often needs to be sequenced around tenants, access windows, and HOA requirements. We plan for that rather than treating it as an afterthought.
Related Deck Waterproofing Services
Balcony Leaking or Due for Waterproofing?
Tell us about the balcony and the building. We'll help you figure out the right approach.