Drainage holes below windows?

[sparr]

All of my side windows have what I would characterize as drainage holes built into their frame. In the track where the window slides open, on the bottom edge, there are a bunch of narrow slots. Those slots have an open air flow to outside the bus, where there are small triangular holes in the rubber sealant around the window, aligned with the holes. My guess is that this is so drinks spilled into the window channel don't gum it up, or possibly to allow outside air to de-fog the inside windows? Either way, I want to plug them, for insulation reasons. My naive approach is going to be to just squirt a little caulk into the holes in the rubber seal around the window. Should I instead remove the window and frame and patch the slots in the metal from the outer edge of the frame?

[buswarrior]

As long as the results from a driving rain has somewhere to go....

These are open all the way to the interior when the windows are closed?

happy coaching!
buswarrior

[DoubleEagle]

If the holes go all the way through, it might be to handle condensation that accumulates on the inside of the window. I doubt it would be adequate for spilled drinks. The big problem on seated coaches were spills and vomits getting into the heating/cooling ducts under the windows.

[Oonrahnjay]

As long as the results from a driving rain has somewhere to go....

These are open all the way to the interior when the windows are closed?

happy coaching!
buswarrior

     On my Peninsula windows, the drains are to release water that's collecting in the grooves.  They're "single slider" windows so the outer groove doesn't have anything sliding in it (that's the cavity that the fixed half sits in); the inner grove has the sliding window in it.  There are drain holes between the inner groove and the outer groove so that water that runs down the closed window can drain away and there is an outer groove drain so that all rain water that accumulates anywhere in the grooves can drain.
     They are not open to the inside of the bus.

[sparr]

As long as the results from a driving rain has somewhere to go....

I prefer driving rain to stay on the outside of the bus, where it belongs, along with cold/hot outside air. I don't WANT those things to have somewhere to go!

These are open all the way to the interior when the windows are closed?

Yes. If it helps to picture it... Press a quarter flat against the window. Drop it. It will slide down the window and rest in the slot in the window frame track (where the OTHER window would slide if it was opened all the way). Go outside and look at the triangular hole in the window seal below the frame and you will see the edge of the quarter resting in the slot.

[sparr]

     On my Peninsula windows, the drains are to release water that's collecting in the grooves.  They're "single slider" windows so the outer groove doesn't have anything sliding in it (that's the cavity that the fixed half sits in); the inner grove has the sliding window in it.  There are drain holes between the inner groove and the outer groove so that water that runs down the closed window can drain away and there is an outer groove drain so that all rain water that accumulates anywhere in the grooves can drain.
     They are not open to the inside of the bus.

My windows are "double slider", either side can slide open all the way, or both can be open halfway at the same time. Maybe this is just a design simplification? The outside groove needs slots, and they couldn't guarantee it would be installed in the correct direction, so they put slots on both grooves?

[Oonrahnjay]

Quote from: Oonrahnjay on March 26, 2016, 06:48:02 AM
     On my Peninsula windows, the drains are to release water that's collecting in the grooves.  They're "single slider" windows so the outer groove doesn't have anything sliding in it (that's the cavity that the fixed half sits in); the inner grove has the sliding window in it.  There are drain holes between the inner groove and the outer groove so that water that runs down the closed window can drain away and there is an outer groove drain so that all rain water that accumulates anywhere in the grooves can drain.
     They are not open to the inside of the bus.

My windows are "double slider", either side can slide open all the way, or both can be open halfway at the same time. Maybe this is just a design simplification? The outside groove needs slots, and they couldn't guarantee it would be installed in the correct direction, so they put slots on both grooves? 

    Maybe.  My Peninsula windows have a flange around the outside periphery -- they definitely can only be installed with one side out.  But being "double slider", your windows are of a completely different detail design than mine.

[bigred]

Haven't seen these on buses but my first two motor homes were Winnebago products and they both had these drain slots and in all the paper work we were told that under no circumstances were these holes to be plugged up.They had plastic covers with open bottoms  that snapped into the the slots.If you can find and old independent RV supply place ,they may still have these in stock .CW might have them ,but due to their Turn and earn philosophy ,I really doubt it !!

[bigred]

Haven't seen these on buses but my first two motor homes were Winnebago products and they both had these drain slots and in all the paper work we were told that under no circumstances were these holes to be plugged up.They had plastic covers with open bottoms  that snapped into the the slots.If you can find and old independent RV supply place ,they may still have these in stock .CW might have them ,but due to their Turn and earn philosophy ,I really doubt it !!

[lvmci]

Hi sparr, so what bus do you have , what model and year? Do you think these are factory windows, or replacement  windows, lvmci...

[Dave5Cs]

These are called "Weep Holes" and they are for rain that gets in the track and condensate on the inside of the tracks and it drain to the outside just like the windows on a house. When these get plugged up the water will fill the track and drain inside and over the top of the track on the outside. I would not caulk them shut.
Dave5Cs

[sparr]

Hi sparr, so what bus do you have , what model and year? Do you think these are factory windows, or replacement  windows, lvmci...

2003 Optima Opus LFB34. I expect that these windows are original factory equipment.

These are called "Weep Holes" and they are for rain that gets in the track and condensate on the inside of the tracks and it drain to the outside just like the windows on a house. When these get plugged up the water will fill the track and drain inside and over the top of the track on the outside. I would not caulk them shut.

Thanks! That search term gave me a lot of info. I guess what I want to get are some sort of cover or removable plug for them, instead of caulking them shut. Apparently weep hole covers are a normal thing for some standard sorts of windows; I shouldn't have trouble making custom ones for my windows.