A wind-mitigation inspection is the report a Florida homeowner's insurer uses to decide which storm-resistance credits a house earns. One section is about roof shape and attachment. The one we care about is opening protection: every window, door, sliding door, garage door and skylight in the house, and what protects each one.
What the inspector is trying to prove
The inspector has to document that each glazed opening is protected by either an impact-rated product or an approved shutter, and they have to show evidence. On a window that evidence is the permanent manufacturer label on the frame, the product approval number on it, and, when they can get it, the closed permit on file with the building department. If they cannot find the label, the window is recorded as unknown, which usually means no credit for it.
Why one opening matters
The opening-protection rating is generally driven by the weakest opening. A house with impact windows everywhere and one unprotected glass door is typically rated on that door. Before an inspection, walk the house and list every opening, including the garage door and any skylights.
What to have ready in Fort Lauderdale
- Closed permits from the City of Fort Lauderdale Development Services Department for every window and door replacement.
- The product approval numbers (Miami-Dade NOA or Florida Product Approval) for each product.
- Photos of the frame labels, so the inspector is not hunting with a flashlight.
Fort Lauderdale is canal-front homes with wide sliding glass doors to the dock, older ranch houses inland, and a downtown of storefronts and offices. Older openings in Fort Lauderdale without labels or permits are the ones that most often cost a credit.
Free on-site measure
Every window job in Fort Lauderdale starts with a free visit. We measure the actual opening, answer your questions on the spot, and you hear back within 24 hours of asking. No obligation.
Where we fit
Every impact window and door we install carries its permanent label, and we give you the permit and the product approvals when the job closes. If you already have impact glass and cannot find the paperwork, send us a photo of the frame label and we will tell you what you have. Impact openings may qualify for credits; your insurer makes the final call.
Castilla Glass is a State Certified Glass & Glazing Contractor (FL Cert. SCC131154602) with 35+ years of industry experience, family-owned since 1991, installing factory-direct V&V Windows & Doors products with our own crews.

