[Rudy]

It should be a double pane window and those are near $500 each. Must be cleaned properly, new glass glued in place and sit for a minimum of 12 hours before driving…..

[Dorel]

Marius….

What Jeff siad is correct. However, owners of coaches have struggled for years with side windows next to the driver and in the entry door that have fogged and needed repair or replacement. Sometimes the replacement would have a very short life and need to be replaced again within a few years and the cost is not cheap.

So as an alternative some owners got creative to bring costs to a reasonable level. Obviously buying a new thermopane glass from Prevost was one consideration. But some owners found they could have a local glass shop make a thermopane to the exact size for less money than Prevost charged. Others opted to replace the thermopane with a single layer of automotive safety glass.

It sounds as if a previous owner of your coach did just that, and failed to properly seal the glass to the frame.

When you replace the broken glass just make sure the glass is installed correctly, with the right materials, and all surfaces are properly cleaned and free of grease or anything that will inhibit adhesion.

[Andy]

My side window is a little different than yours but I just took the window out myself and used it as a template for my glass company. They made a new thermal pane and I re-installed it. I think the cost was about $165 for the glass and 10 bucks for a tube of sealent. I just noticed my door window is starting to fog up also – I guess I’ll be doing that one next:). Just make sure they know it is for an automotive application so they use the appropriate glass.

[JIM]

The OEM installation caulk is Sikaflex 255FC (FC = fast cure). In June 2014 it was $11 a tube from Prevost Parts and they will send you two tubes. Be sure to mask off both sides of the joint between glass and frame to minimize clean up, otherwise cleanup will be the bigger part of the job.

You can search/see my post/discussion from 6/14.

[Frank]

After the window is installed and you are waiting for the adhesive to cure/dry the specified amount of time.

BE SURE TO HAVE A WINDOW IN THE COACH OPEN.

The open window is to ensure the glass will be glued exactly into the place it was originally placed.

If the bus is closed the pressure created by simply closing the door is sufficient to blow out the freshly glued glass.

JIM

[Dave]

I found out why it failed.

Apparently the previous owner had both sides of the coach changed from double pane to single.

Looked at the right side (door) and sure enough the bottom of the window is unglued…..but why ? Well….I think that whomever installed them screwed up….

The custom panels of glass, made for each side, had a 3/4″ band around the perimeter, painted black to probably hide the adhesive showing underneath…well …the technician must have flipped the sides and actually glued the glass on the painteed side on both sides…..That means that the Sikaflex actually stuck to paint instead of glass…I have black paint stuck to Sika all the way around on the pane that flew away while driving.

I have to take the door fixed glass panel off as well and re-do the whole thing on both sides.

A bit of clarification still needed for this process, please….

Does the frame of the window have to come off the bus to take out the double pane, moving window, on each side to get it rebuilt and cleaned inbetween the panes ? Both sides of the sliders are fogged and need to be cleaned. Is there a way to remove the slider on the XL without removing the frame ?

I understand that if I get a flexible utility knife I can cut out the fixed pane of glass out of the frame and reglue it after all the old Sika is removed. I will use the door fixed panel to model the driver side and order 3-4 tubes of Sika from Prevost. Will put a bead on inside and then after that is dry, a bead on the outside to hold that pane tight and fill the gaps in the frame nicely.

Do I have that right ?

Thanks

[Archived]

Can the double pane, the sliding portion, be removed to clear the fogging without taking the frame off the bus ?

If so, any suggestions on procedure ?

Thank you

[Marius]

Had Prevost Houston repair my drivers side sliding window ($1200) because of fogging about 2 years ago and noticed this past weekend a little fog again. Rats.

[Archived]

Sika also has an activator that should be used on the glass surface before using the sika to install the glass. Otherwise, you may not get good adhesion to the glass.

[Corey]

I went back with high E glass single pane and can’t tell any differance and there is no future hazying issue. The charts show almost no differance between 2 on efficiency. less than $150… Bob

[Roger]

Can the double pane, the sliding portion in either the driver side or door, be removed without taking the whole window off the bus ? On regular RVs the whole window comes out, they opne the frame, remove the double pane window, open it up, clean, rebuild, put back in the frame and then the window goes back on the motorhome.

Is there a way to get these sliders out of the frame without removing the frame ?

If so, any suggestions on procedure ?

Thank you

[Dick]

Yes. The process of removal just requires you cut around the perimeter Sikaflex and then the bond between the glass and frame where it seats in the frame.

When we get Prevost to deal with the more expensive and safety related stuff such as CAC hoses, shaking mirrors, etc. may if we are not completely worn out we can try to find out why they cannot get double pane windows that will not fog. It ain’t rocket science.

[Archived]

Jon, I understand how to take the fixed part out by cutting it out of the frame. and so on.

I want to know if the sliding portion can come out of the frame somehow…..

[Archived]

Same procedure, the frame does not come out, cut the glass out of the frame on the coach