Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
CWS Window Replacement: The Lighthouse Point Owner’s Guide
CWS window replacement in Lighthouse Point typically runs $340-$780 per opening for stock sizes, installed, with most jobs scheduled within 48 hours of survey. We stock CWS-compatible sashes, balances, and hardware for the A120, A320, and impact-rated StormStrong series on our trucks, and we carry PGT and CGI equivalents when cross-compatibility makes sense. Most Lighthouse Point owners discover the problem when a sash won’t stay open, a balance cable snaps with a loud pop, or they feel salt-air draft around a frame that used to seal tight.
Which CWS Models This Applies To
CWS window replacement parts break down into three series families we see regularly in Lighthouse Point. The A120 single-hung and horizontal roller lines use a 5/8-inch spiral balance with a #6 or #8 foot depending on sash weight; the A320 double-hung carries a block-and-tackle balance system rated at 12 to 28 pounds. The StormStrong impact series, required for HVHZ compliance in Broward County, uses reinforced interlocking meeting rails and laminated glass packages that cannot be swapped with standard A-series sashes. The model label lives on the top right corner of the operable sash or inside the head jamb; if it’s faded from salt air, we measure the visible glass, frame depth, and balance tube length in the field.
OEM CWS parts ship from their Doral distribution center in 5-10 business days. We stock quality aftermarket balances from AmesburyTruth and truth-equivalent sash locks that match CWS keeper spacing on our trucks, which cuts most Lighthouse Point jobs from two weeks to same-week completion. The aftermarket decision depends on whether your window is still under CWS’s original 10-year glass and 20-year frame warranty; if it is, OEM preserves that coverage. If the warranty has aged out, the aftermarket hardware we install carries Sightline’s 365-Day Done Right Promise under Haven Clause 5.
Signs Your CWS Window Replacement Is Failing

- The sash slams shut or won’t stay open. This is the spiral balance losing tension, usually from corrosion at the foot bracket where Lighthouse Point salt air accelerates rust. We measure the balance tube length and weight rating; a 24-inch #8 spiral balance for a 30-pound sash is the most common replacement we write up on canal-front homes near the Lighthouse Point Marina.
- You hear a loud pop and the sash drops freely. The balance cable has snapped, often on block-and-tackle systems in the A320 series. The cable is not field-repairable; the entire balance cartridge must be extracted through the jamb pocket and replaced with a matched-weight unit.
- Visible moisture between glass panes. The insulated glass unit (IGU) seal has failed. CWS IGUs use a dual-seal warm-edge spacer; in South Florida’s UV exposure, we typically see seal failure at 8-12 years, sooner on west-facing elevations. The glass pack gets measured, ordered, and reglazed into the existing sash frame.
- Frame corner separation or vinyl cracking at the weld. Heat buildup in dark-colored frames causes thermal expansion stress at the corner joints. CWS frames with welded corners can sometimes be regapped and reinforced; cracked sashes require full replacement.
- Draft or water intrusion during easterly storms. The weatherstrip has compressed or the sill track drainage weeps are clogged with debris. We check weep hole clearance with a 1/16-inch probe; if the track drains freely, the pile weatherstrip gets replaced with matching fin-seal dimensions.
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AfterReplacement Cost & What’s Included
| Component | Price Range (Installed) | Notes |
|---|---|---|
| Spiral balance replacement (single sash) | $180-$280 | Includes removal, weight-matched balance, lubrication, operation test |
| Block-and-tackle balance (double-hung) | $240-$360 | Both sashes if paired; jamb liner repair if damaged |
| IGU replacement (standard size) | $340-$520 | Measured, ordered, reglazed; 10-year glass warranty |
| Sash replacement (non-impact) | $480-$680 | New sash into existing main frame; color-matched |
| Full window replacement (impact-rated) | $780-$1,400 | StormStrong or equivalent; permits and inspection included |
What drives the range: sash size, whether the frame is salvageable, and whether the opening requires HVHZ-rated product for Lighthouse Point’s location in Broward County. Every quote starts with a measured survey you keep; the written scope and the final invoice are the same document. Haven Clause 1 means no change orders, no surprises. The 365-Day Done Right Promise covers all workmanship; manufacturer parts carry their own warranty terms, which we document in your photo record.
DIY or Call Us?

There’s a short list of checks that won’t void anything or put you at risk. Verify the model label location. Open the sash fully and look for visible cable fraying or balance tube corrosion. Run a finger along the interior frame to feel for corner separation. Clear weep holes with a pipe cleaner if you can see debris.
What goes wrong fast: spiral balances store significant torque; releasing a tensioned balance without a winding tool can snap the tube and lacerate a hand. Block-and-tackle systems require jamb liner removal that, done incorrectly, damages the frame pocket and turns a $280 balance job into a $680 sash replacement. IGU replacement demands clean-room reglazing technique; dust under the spacer causes immediate re-fog. We are an independent service provider, not affiliated with CWS, and we carry the tools and stock to complete the job without two trips. Measure twice, write it down, then we talk price. Call (754) 600-8907 to schedule your free estimate.
FAQs
How long do CWS window parts last in Lighthouse Point?
Spiral and block-and-tackle balances typically last 10-15 years in Lighthouse Point’s salt-air environment, though canal-front properties with sustained easterly exposure see closer to 8-12 years. IGU seals fail at 8-12 years on south and west elevations. Call (754) 600-8907 for an exact quote - estimates are free.
Can the part be repaired instead of replaced?
Balance cables and failed IGUs are not field-repairable; the component must be replaced. Corner-separation on vinyl frames can sometimes be reinforced if caught early. We document what we find with photos and write the scope in plain numbers before any work starts. Call (754) 600-8907 for an exact quote - estimates are free.
How long does the replacement take?
Balance replacements take 45-90 minutes per opening. IGU replacement requires two visits: measure and order, then install in 30-45 minutes once the glass arrives. Full window replacement is a full-day job with permits pulled and inspection scheduled. Call (754) 600-8907 for an exact quote - estimates are free.
Do you stock CWS parts on your truck?
We stock AmesburyTruth spiral balances, block-and-tackle cartridges, and sash hardware that matches CWS keeper spacing and tube dimensions on every truck. OEM CWS-branded components are ordered from Doral with your approval; we do not markup manufacturer parts. Call (754) 600-8907 for an exact quote - estimates are free.
Written by Sonia Raman, Owner, Sightline Windows & Doors Lighthouse Point at Sightline Windows & Doors Lighthouse Point, serving Lighthouse Point and nearby areas.










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