Mon–Sat 8:30 AM–7 PMCall (310) 628-9399

Doors and cabinets

Window Leak Repair in Alhambra, CA

Short answer: Leaks at windows usually trace to old caulk, seals or clogged weeps.

A window that lets rain in usually needs a new seal, not a new window. We hose-test from outside to find the exact gap, cut out the failed caulk, clear the weep holes, and reseal the frame where it meets the stucco or siding.

Close-up of raindrops on a window with blurred background, conveying a moody, vibe
Stock photo · Pexels

What’s included

  • Leak testing with a garden hose
  • Old exterior sealant removed and replaced
  • Weep holes and tracks cleaned
  • Frame-to-stucco gaps sealed
  • Wood sills and trim reset and sealed
  • Wet drywall below the window checked

What we don’t do

  • New openings cut into a wall for a door or window.
  • Glass cutting and glazing; we send that to a glass shop.
  • Garage door openers, springs and cables.

In Alhambra homes

About 77 percent of Alhambra’s homes were built before 1980, according to a city housing report. Many have wood-framed windows from the original build or aluminum replacements set into old openings, and both depend on exterior caulk that the sun dries out. Once that seal splits, the first storm of the season finds it. The EPA recommends drying wet materials within 24 to 48 hours, so we check the wall below the window for soaked drywall too.

Get a quote in one text

Send photos of the window from outside and inside, plus any stain on the wall below. Our number for photos is (310) 628-9399, and the price comes back before any work is booked.

Caulk, Drywall, Cord coverCaulkDrywallCord cover

Wood windows in older houses

Original wood sashes leak at the sill joint and where the glazing putty has fallen out. Those are sealing and putty jobs, often done with <a href="/services/wood-rot-repair/">wood rot repair</a> where the sill has gone soft.

Aluminum replacement windows

These leak where the new frame meets the old opening, or when the weep holes at the bottom of the frame clog. Sticking and broken latches are covered on <a href="/services/sliding-window-repair/">sliding window repair</a>; drafts without water go under <a href="/services/window-caulking-and-draft-sealing/">window caulking and draft sealing</a>.

Window leak repair steps1Find where watergets in2Clear weep holes3Reseal the frame4Hose test it
How a leaking window gets sealed.

Not included

Replacing whole windows, enlarging openings or work on the wall structure behind the frame.

In older Alhambra houses this job often turns up next to window caulking and draft sealing, sliding window repair, wood rot repair and door leak repair, so mention those when you text and we can price them together.

Sources: City of Alhambra, housing needs report (age of housing stock); U.S. Environmental Protection Agency, A Brief Guide to Mold, Moisture and Your Home.

Window leak repair questions from Alhambra homeowners

Why does my window leak only in some storms?

Rain from one direction hits the side with the cracked seal. Calm rain may not reach it at all.

What are the little slots at the bottom of my window?

Weep holes. They drain water out of the frame and need to stay open.

Close-up of a window with raindrops creating a soothing and melancholic atmosphere
Stock photo · Pexels

Can you fix a leak without replacing the window?

Usually, yes. Most leaks are in the exterior sealant or blocked drains, not the glass.

Window with a concrete sill in a plain stucco wall
Photo: Robert A. Hicks, Historic American Buildings Survey, public domain, via Wikimedia Commons

Is condensation on the glass a leak?

No. The EPA links condensation to indoor humidity; drying the surface and venting the room help.

Window sill and frame edge with frosted glass
Photo: Emily May / Flickr, CC BY 2.0

How much does window leak repair cost?

It depends on the window. Text a photo for a free estimate.

Repair guides for this job

Looking for a handyman in Alhambra for more than one job? Send the whole list and we’ll price it together.

We serve Alhambra first, plus Monterey Park, San Gabriel and other nearby cities. Have a question? See the handyman FAQ.

  • Estimates are free
  • Based in the San Gabriel Valley
  • Heads-up text on the way
  • One-fix visits are fine
  • Open Mon–Sat 8:30 AM–7 PM
  • Merick speaks English, Mandarin and Cantonese · 中文

How a window leak repair visit works

  1. Send a pictureSnap the window leak repair on your phone and add your street.
  2. See the priceYour free estimate arrives by text, and nothing is scheduled until you say yes.
  3. DoneYou get a text when I leave, the repair gets finished, and the area is swept.

Texts usually answered within the hour; it can vary.

What you can count on

If it isn’t right, I return to fix it. Message me about any repair of mine that acts up and I’ll be back.

Drain, Bulb, DoorDrainBulbDoor

Nothing extra without your OK. The quote you agree to is what you pay unless you approve a change first.

“highly efficient, professional and friendly staff. will use their services again!”

Jess M., Alhambra, CA · Read reviews on Yelp

Request a window leak repair quote

Your phone’s messages app opens with these details; this site keeps nothing. Add the picture there. Texts usually answered within the hour; it can vary.

Reviews

Customers on Yelp

Quoted exactly as written on Yelp, where the business is listed as Szeto Plumbing and Handyman.

highly efficient, professional and friendly staff. will use their services again!
Jess M.Alhambra, CA · Yelp review · Dec 20, 2022
Rick was excellent! He arrived on time, quickly diagnosed the issue, and fixed it efficiently. Very professional, friendly, and reliable service. Highly recommend!
Stephanie Z.Azusa, CA · Yelp review · Oct 2, 2025

See all Szeto Plumbing and Handyman reviews on Yelp