Mr-Glass Window Replacement Nationwide | Sightline Windows & Doors Lighthouse Point

Mr-Glass Window Replacement: The Lighthouse Point Owner’s Guide

Mr-Glass window replacement in Lighthouse Point typically runs $340-$780 per opening installed, depending on series, size, and whether the frame is salvageable. We stock Mr-Glass-compatible sashes, balances, and glazing bead for same-day replacement on most common series. Homeowners usually discover the failure when a window won’t stay open, fogs between panes, or the sash drops suddenly - often after a storm season or when the salt air has worked on the hardware for a few years.

Call (754) 600-8907

Which Mr-Glass Models This Applies To

Mr-Glass produces three residential window lines we see regularly in Lighthouse Point: the MG-200 single-hung series, the MG-400 horizontal roller, and the MG-600 impact-rated line. The MG-200 and MG-400 use a 5/8-inch glazing bead profile that is proprietary to Mr-Glass; the MG-600 impact line uses a heavier 7/8-inch bead with a dual-durometer seal that cannot be substituted from generic stock. To identify your series, check the etched mark in the lower right corner of the insulated glass unit - it reads “MRG-[series]” followed by a date code. The balance assembly on MG-200 single-hung units carries a stamped part number on the metal channel; if that stamp is corroded (common within eight years on canal-front properties), we measure the channel length and sash weight to spec the replacement.

Sightline Windows & Doors Lighthouse Point is an independent service provider, not affiliated with Mr-Glass. We source OEM Mr-Glass parts through verified distribution, and where OEM lead times exceed two weeks, we stock quality aftermarket equivalents that match the original sightline and U-factor. The aftermarket balance assemblies we carry are rated for Florida’s salt-air exposure and carry the same one-year part warranty as OEM.

Signs Your Mr-Glass Window Replacement Is Failing

• Sash drops or won’t stay raised. The coil balance assembly has lost tension or the pivot shoe has cracked. On MG-200 units, this often starts after 6-8 years in Lighthouse Point’s coastal climate; the salt accelerates corrosion on the balance drum.
• Fogging or moisture between glass panes. The insulated glass unit (IGU) seal has failed. This is not repairable - the IGU must be replaced as a sealed assembly. We see this most on south- and west-facing windows where thermal cycling is highest.
• Difficulty locking or visible frame sag. The sash frame has warped or the keepers have worn. On MG-400 rollers, debris in the track compounds the problem; the sash drags, stressing the lock mechanism.
• Draft or visible daylight around the sash. The weatherstrip has compressed or the glazing bead has pulled away. Mr-Glass uses a snap-in bead that can loosen after repeated pressure-washing - a common maintenance habit in Lighthouse Point.
• Cracked or chipped glass with intact frame. Impact debris or thermal stress has damaged the lite but the sash and hardware are sound. This is a glass-only replacement, assuming the frame dimensions haven’t shifted.

Before

After

Replacement Cost & What’s Included

These ranges cover parts, labor, and disposal in Lighthouse Point. What moves the price: frame condition (rot or misalignment requires additional work), access difficulty (second-story and impact-rated openings take longer), and whether the original part is still in production. We measure every opening on the first visit, write the scope and price on the same document, and that number does not change once work starts - Haven Clause 1. The 365-Day Done Right Promise covers all Mr-Glass replacement work; if the balance fails or the seal breaks inside a year, we return and correct it at no charge.

DIY or Call Us?

An owner can safely check the etched series mark, clear debris from the track, and confirm whether the sash moves freely in the frame. What we do not recommend: removing a sash with a failed balance, cutting glazing bead, or handling an impact-rated IGU. The MG-600 impact line uses laminated glass that weighs 4-6 pounds per square foot; a dropped sash can cause serious injury and property damage. The balance assembly on MG-200 units is under spring tension and requires specific tools to release safely.

We carry Mr-Glass-compatible balances, bead, and IGU specs on our trucks for Lighthouse Point calls. If you are unsure of your series or the part number is unreadable, we will identify it in person and write the price before any work begins. Call (754) 600-8907 to schedule your free estimate.

FAQs