Tech Support & Tips - (800) 714-7171

The information to follow is intended as a service to our customers. It is made available as general assistance for technicians in the installation of motorhome windshields. Because of the variety of factors involved in each individual windshield installation, Coach Glass cannot accept responsibility for any application or misapplication of this information; it is intended only to provide general assistance. Additional technical assistance is available by contacting us at (800) 714-7171 between the hours of 8:00 a.m. and 5:00 p.m. PST.

General Installation Issues

To follow are some general installation issues that have been identified by Coach Glass:

  • Stress Cracks: Stress cracks are most often the result of increased flexibility in older coaches brought on by normal wear and tear. The body flexes more around the windshield, which pinches or binds the glass. This is a common problem as a coach ages. Replacing a stress-cracked windshield is fixing the results of a problem, not the problem itself. For this reason, we do not recommend warranting installations that are necessitated by stress cracks.

  • All glue-in fiberglass cap models: In the original engineering process, windshields are installed at the factory in the cap, before the cap is attached to the body. The cap with the installed windshield is then attached to the body. In some cases, the installation requires the cap with the windshields to be either stretched or compressed to fit the body. In these cases, replacement windshields installed after manufacture, including OE windshields, may not fit as well as they should. Other than wet-sanding the edge of the windshields, no remedy has yet been identified for this problem.

  • Front Cap Sag: On many two-piece windshield installations, when both windshields are removed at the same time, the top of the front cap will sag. To avoid this problem, we recommend replacing the windshields one at a time. For additional technical assistance about this issue, contact us at (800) 714-7171.

  • Gasket Replacement: We recommend replacing only damaged windshield gaskets. Replacing a gasket in good condition unnecessarily adds to the risk of breaking a windshield during the removal and re-installation process.

RV Windshield Installation Tips

Basic tips for quoting, inspecting, handling, and installing RV windshields are provided below.

Providing a quote to your RV customer:

  • Inspect the coach and look for anything unusual before quoting the customer.
  • Determine your assumption of risk before warranting the glass.
  • Remember: every coach is hand-built, which may cause inconsistencies in its manufacture.

Receiving a quote from Coach Glass:

  • For quickest quote response please have the following information:
    • Year, make & model
    • All numbers on glass
    • Glass color

Inspecting for damage:

  • Check to see if the windshield opening in the cap is square.
  • Check if the gasket or molding is attached securely to the fiberglass.
  • Ask the owner if the coach has ever been in a collision or if it has a history of windshield breakage.

Accepting freight delivery:

  • Unpack and inspect the windshield immediately; properly inspecting the glass is the installation shop’s responsibility.
  • Check the glass for chips, clams, or cracks.
  • If damage is found, refuse the shipment. Note on delivery receipt “Refused due to damage”. Call Coach Glass immediately to report refusal.

Storing or transporting:

  • Store the glass in a safe location where it will not be bumped or nicked, as glass is vulnerable to cracks, chips, and scratches.
  • Transport the glass in a vehicle equipped to handle its vulnerability if the windshield must be moved after unpacking.

Preparing for installation:

  • Inspect the coach’s windshield area thoroughly.
  • Document any abnormalities and explain these liabilities to the customer. If customizing the windshield is necessary to fit the coach, or if it looks as though it might be difficult to install, it is particularly important to detail these liabilities to the customer.

Installing the windshield:

  • Evaluate the opening and placement of the glass.
  • Inspect the rubber, fiberglass, and urethane. Old urethane should be scraped down to a thin, uniform layer to prevent the windshield from sitting unevenly against the pinch-weld.

Gasket replacement:

  • Test fit any provided gasket to the new windshield before removing old windshields to confirm correct fit.

Determining stress cracks:

  • Occasionally windshields develop stress cracks after installation. (Stress cracks are not chips, clams or cracks that are visible prior to installation. Our warranty uses the following definition of a stress crack: “Glass breakage that originates from one of the outside edges of the windshield, and is not a result of impact from debris, stress from flexing of the coach’s cap, or improper installation.”)
  • If a stress crack develops, or if you have questions regarding our warranty, please contact us. We evaluate stress-crack claims on a case-by-case basis, depending on the origin and severity of the crack.