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Energy-efficient, sealed & square

Windows & Doors

Energy-efficient window and door replacement — installed sealed, square and flashed perfectly. The single biggest comfort-and-noise upgrade a Valley home can get.

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Windows & Doors by The J Hammer Inc in the Los Angeles area

Comfort, quiet and curb appeal in one upgrade

Thousands of Valley homes still run on original single-pane aluminum windows that bake west-facing rooms, let in every passing car, and fight you to open. The J Hammer replaces windows and doors with modern dual-pane, low-E units — installed the right way, which matters more than the brand on the sticker.

What we install

  • Retrofit and new-construction windows — dual-pane, low-E glass that cuts solar heat and outside noise.
  • Entry doors — new door and frame, hardware, weatherproofing and finish.
  • Sliding and French patio doors — the upgrade that changes how a backyard gets used.
  • Interior doors and hardware — as part of a remodel or on their own.

Retrofit vs. new-construction install

Retrofit (insert) windows fit inside the existing frame — faster, cleaner, no stucco surgery, and the right call when frames are sound. New-construction installs remove everything to the studs and re-flash — necessary when frames are rotted or you are changing sizes. Most LA replacements are retrofits; a good installer tells you honestly when yours should not be.

Why installation is half the product

A premium window installed out of square, unsealed or badly flashed performs worse than a mid-grade window installed correctly. Square and plumb, foam-sealed perimeters, and correct flashing integration with the stucco — that is what you are hiring. It is also why window jobs pair naturally with exterior painting: the patch and paint happen once and the whole face of the house upgrades together.

Planning your budget?See typical windows & doors price ranges
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Licensed & insured · LIC #1045849Get a free estimate for your windows & doors project
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Real projects across SoCal.

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Windows & Doors FAQs

How much do replacement windows cost?
Vinyl retrofit windows typically run $700–$1,500 each installed — about $10,000–$25,000 for a whole house of 10–15 windows. Entry and patio doors run $2,500–$7,000. See our pricing guide.
Retrofit or new-construction windows — which do I need?
Retrofit inserts are right when the existing frames are sound (most homes). New-construction installs are for rotted frames or size changes. We will tell you honestly which yours need.
Will new windows really cut noise and heat?
Yes — dual-pane low-E glass is the single biggest quieting and solar-heat upgrade a home can get, especially on west-facing rooms.
Do you handle Title 24 and rebates?
Yes — California’s energy code steers replacements toward low-E dual-pane, and we flag any active utility rebates when we quote.
Ready when you are

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your windows & doors project.

(310) 228-8284
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