Window Leak Repair & Waterproof Sealing

Water getting in around your windows causes structural damage, mold growth, and energy loss. We diagnose the source and fix it properly — not just re-caulk and hope for the best.

Rated 5.0 on Google
  • Fully Insured
  • 24/7 Emergency Service
  • Free Estimates
  • Serving DC · MD · VA

Leak Diagnosed

Source identified before any work begins

Structural Protection

Stop damage before it spreads

Fully Insured

Fully covered on every job

Written Guarantee

Repair guaranteed in writing

Residential double-hung windows

Find the Source. Fix It Right.

Window leaks rarely have one obvious cause. Water can enter through failed glazing compound, cracked caulk, damaged flashing, warped frames, or failed insulated glass seals — often in combination.

We conduct a thorough diagnostic before touching anything, identify every infiltration point, then provide a complete fix rather than a surface-level patch.

Water infiltration source diagnosis
Frame & sill resealing
Weatherstripping replacement
Mold prevention treatment

Window Leak Repair Services

Leak Diagnosis

Visual inspection plus water testing to identify all infiltration points before any repairs begin.

  • Visual inspection
  • Water test simulation
  • All infiltration points mapped
  • Written assessment

Caulk & Sealant Replacement

All old, cracked, or failed caulk removed and replaced with professional-grade silicone. Interior and exterior joints.

  • All joint types
  • Professional-grade silicone
  • Interior & exterior
  • Color-matched finishes

Weatherstripping Replacement

Worn or compressed weatherstripping replaced to stop air and water infiltration. All window and door types.

  • All window types
  • Draft elimination
  • Water seal restored
  • Energy efficiency improved

Frame & Sill Repair

Warped or damaged frames repaired or replaced. Sill damage rebuilt. Flashing re-secured or replaced.

  • Frame repair & replacement
  • Sill rebuilding
  • Flashing remediation
  • Structural waterproofing

What customers say

Rated 5.0★ on Google. Read them on Google

"
★★★★★

I had a great experience with this company for my window glass replacement. The team was professional, responsive, and efficient. They did an excellent job replacing the glass, and everything looks great. The work was completed neatly and on time, and the pricing was reasonable. I highly recommend them to anyone looking for reliable glass repair or window replacement services!

HH

Hamzh H.

Google review · Window glass replacement
"
★★★★★

Ayoub really knows his craft he was so helpful, he guided me thoughout replacing 3 of my glass windows, and the cost was much better than the others, the final results were stunning!

L

Lanchoun

Google review · Window glass replacement

Schedule a Window Leak Inspection

A leaking window gets worse over time. Our team diagnoses the source and delivers a lasting fix across DC, MD, and VA.