Illinois Window Service | Joel De La Cruz | Phone: 847-344-8824 | Fax: 815-991-5512 | Email:
What is 'Seal Failure'?
Seal failure occurs when the sealant between the two lites of glass breaks, subjecting the airspace to the surrounding environment. Since the sealant acts as the moisture barrier, if the seal breaks, condensation can develop in the airspace of the insulating glass window. Typically, you can get replacement glass for free if it is under warranty.
Vinyl Damage !
This Patio Door sil would cause an inspection to fail.
Professional Window and Door  Service / Fully Insured
Windows and Door Services Available:

Houses and  Buildings Under Construction

If you are a contractor that is managing the construction of an assigned project, we know the importance of passing your inspections and meeting your quality standards. We offer scheduled quality inspections on a one time basis, or contact us to setup a series of inspections that will follow the progression of your inspections. Other issues that you might want to contact us for is cracked glass, damaged frames (vinyl damage often can be repaired), poorly operating windows, parts and pieces, seal failure, and other quality issues.

Warranty Work for Builders

If you are part of a Warranty / Customer Care Team, we can help you keep your homeowners 100 % satisfied. Our Service Techs have gone on thousands of service calls, and know proper protocol in regards to courteous behavior, showing up on time, and communicating to you, the Warranty Rep, how the problem was resolved, or any necessary followup. Furthermore, we encourage you to tell your homeowners that are past their '1 year warranty' that we are available to help them with questions or scheduled service.


If you are a homeowner that needs window service or repair, please contact us with details of your issue. Often the glass is warrantied but the installation is not. 'Seal Failure' is a commom problem where the seal breaks in thermal pane glass, and you see condensation between the panes, in many cases you can get replacement glass for free. If you have cracked glass, poorly operating windows, or need parts and pieces, call us, or send us a note, and we will see if we can help you out.
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Illinois Window Service | Joel De La Cruz | Phone: 847-344-8824 |  Email:
Commercial, and Residential Window and Door Repair, Installation, and Service
- Glass Inserts for Doors
- Side Lite Inserts
- Door Locks and Handles
Door Service
- Storm Doors, and Security Doors

- Exterior and Interior Wood and Steel Doors

- Residential and Commercial

- All Name Brand Doors and Locks

- Door Adjustments and Replacements
We offer competitive costs on GLASS REPLACEMENT !

'Warranty Work' available for Homeowners and Builders.
Windows Service and Repair: Alenco Windows, Andersen Windows, Crestline Windows, Eagle Windows, JELD-WEN Windows, Lincoln Windows, Marvin Windows, Republic Windows, Silverline Windows