Patio Water Protection

Patio Door Waterproofing in the South Bay

Seal Out Water. Protect Your Home.

If your sliding glass or French patio door leaks during rain, you’re not alone. Water intrusion around patio doors is one of the most common and costly problems South Bay homeowners face. At Ewell Construction, we provide professional patio door waterproofing to stop leaks, prevent water damage, and keep your home secure and energy-efficient.

From Redondo Beach to Manhattan Beach and everywhere in between, our experienced team fixes faulty flashing, seals gaps, and installs long-lasting waterproofing systems tailored to coastal conditions.
​​

Why Waterproof Your Patio Door?

  • Prevent Water Damage: Stop leaks before they lead to mold, drywall damage, or warped floors.
  • Extend the Life of Your Doors: Waterproofing prevents wood rot, rust, and seal failure.
  • Improve Energy Efficiency: Sealed patio doors help control indoor temperature and reduce energy bills.
  • Avoid Expensive Repairs Later: Fixing a leak early is always cheaper than repairing structural damage.
​

Our Waterproofing Process

  • Assessment – We locate the source of water intrusion, whether it’s improper flashing, missing sealant, or foundation settling.
  • Removal of Damaged Sealant – We remove deteriorated or improperly applied caulking and materials.
  • Flashing & Sealant Application – We install or repair flashing, apply professional-grade sealants, and reinforce surrounding materials.
  • Testing & Cleanup – After waterproofing, we water-test the door to ensure the leak is resolved — with zero mess left behind.
​

Common Signs of a Leaking Patio Door

  • Water pooling at the base of the door
  • Peeling paint or stained drywall
  • Swollen or warped floorboards nearby
  • Mold or mildew smell near the opening
  • Visible cracks in sealant or gaps in trim​
     

FAQs – Patio Door Waterproofing

Q: How do I know if my patio door needs waterproofing?
A: Signs include water stains, damaged flooring near the door, or visible caulk deterioration. If in doubt, our team can perform a thorough inspection.

Q: Can I just add more caulking myself?
A: Temporary fixes like surface caulking may help for a short time, but most leaks involve flashing or improper door installation. Our professional process ensures long-term results.

Q: Does waterproofing require removing the entire door?
A: Not always. In many cases, we can seal and waterproof the surrounding frame without full removal. If removal is necessary, we’ll walk you through all options first.

Q: How long does the service take?
A: Most patio door waterproofing jobs are completed in 1 day or less, depending on the damage and door type.
​
Q: Will this stop drafts or improve insulation?
A: Absolutely — effective waterproofing seals gaps that also let air through, improving indoor comfort and reducing energy costs.
Google Reviews for Ewell Construction

What Our Clients Say

Real reviews from our valued customers.

Google More on Google