Drain hole under windscreen moulding?? Or is water pooling somewhere?

[SwissEd]

Good day all,
I have recently had to replace my windscreen in my 100 series (2005) after driving to the arctic. One of the mouldings was ''butchered' on replacement and needs replacing (again) as the top 'rivet' holding it down has broken off and there is a small hole. Toyota claims the water drains away (as the moulding is on back order for several weeks) and the vehicle is outside getting drenched in rain here in the UK. I simply want to be certain any water ingress (in the below hole) drains and does not pool somewhere and rust. Is anyone familiar with if what Toyota claim is correct-- "no need to worry as it drains".

Many thanks as I want to preserve this wonderful HDJ100 forever!

 

[GerLC100]

Mine is sticking up even further and we had quite some rain in the past weeks. Nothing happened.
I took off the metal stripes under the roof rails permanently and under the mould there is a small corner open for water to flow through. As long as the moulding mounting holes are closed nothing should happen based on what I saw.

And based on what I read here quite some people have this topic and just leave it.

Let's see what other say, but I personally am under the impression all is good.

 

[SwissEd]

Mine is sticking up even further and we had quite some rain in the past weeks. Nothing happened.
I took off the metal stripes under the roof rails permanently and under the mould there is a small corner open for water to flow through. As long as the moulding mounting holes are closed nothing should happen based on what I saw.

And based on what I read here quite some people have this topic and just leave it.

Let's see what other say, but I personally am under the impression all is good.

Many thanks-- from what I am also hearing if water enters one of the missing pop rivets it drains and there is no plug at the base of the pillar (or so I hope as well...). I am also hearing that if the gasket under the roof rails starts to leak, then the screws holding the rail can rust and this may be an entry point for water. My gaskets under the roof rail are now 20 years old and starting to wonder if it would be prudent to replace?? A few years ago I had water entering in the rear cargo area and soaking part of the carpet. I could not for the life of me figure out where the water was entering and then it stopped.

 

[Mike NXP]

I agree that water draining under there will not enter the vehicle, unless you have any missing rivets/ exposed holes under there. If you are concerned while waiting for the part, the classy solution would be to throw a tarp over it for now.

 

[GerLC100]

Many thanks-- from what I am also hearing if water enters one of the missing pop rivets it drains and there is no plug at the base of the pillar (or so I hope as well...). I am also hearing that if the gasket under the roof rails starts to leak, then the screws holding the rail can rust and this may be an entry point for water. My gaskets under the roof rail are now 20 years old and starting to wonder if it would be prudent to replace?? A few years ago I had water entering in the rear cargo area and soaking part of the carpet. I could not for the life of me figure out where the water was entering and then it stopped.

I removed the rack to clean everything and found some bolts heavily corroded. I even had to drill one out. You can remove the plastic caps easily and see what;s going on. In my case water was standing in the tower...
And if all good just pop the covers back in.

 

[W03DY]

Good day all,
I have recently had to replace my windscreen in my 100 series (2005) after driving to the arctic. One of the mouldings was ''butchered' on replacement and needs replacing (again) as the top 'rivet' holding it down has broken off and there is a small hole. Toyota claims the water drains away (as the moulding is on back order for several weeks) and the vehicle is outside getting drenched in rain here in the UK. I simply want to be certain any water ingress (in the below hole) drains and does not pool somewhere and rust. Is anyone familiar with if what Toyota claim is correct-- "no need to worry as it drains".

Many thanks as I want to preserve this wonderful HDJ100 forever!

View attachment 3602702

View attachment 3602703

It is all good for the water to drain down in there. UNLESS the side moulds for your windscreen are held in by screws and not the OEM rubber coated rivets. The screws will let water in and cause rust in your A-pillars as well as drip water onto your relays

 

[Mike NXP]

It is all good for the water to drain down in there. UNLESS the side moulds for your windscreen are held in by screws and not the OEM rubber coated rivets. The screws will let water in and cause rust in your A-pillars as well as drip water onto your relays

Has this leak actually happened to you from using screws ? I'm curious because I don't believe using screws is a problem and this is just another forum myth that gets passed along. Spoke with plenty of experienced glass installers but what the heck do I know . Mine has screws and no leaks for idk 5+ years so just curious if anyone has actually related using screws to a leak

 

[2001LC]

I remove side molding and fill holes with 3M windshield butyl, until ready to repair and install. If I've concerns of water entry or rust. Factory Installed are never have issues.

The back or top ends of side molding. Sticking up or having a gap between them and Roof Rack Caps. Are due to:

1. Being glued down, in rain cannel. There should not be any glue anywhere on side molding. Roof ends, should be double sided taped.
2. Wrong length. Not a big deal to have a gap, but not best either.
3. Molding metal core is sprung (bent). This often result in metal core damaging body paint (rust point)
4. Combination of above.

We may not be able to buy all lengths, these days. IDK! By using VIN # when searching parts #'s, you can find-out. The benefit of longer, is they'll tuck under or on RR caps. Which helps reduce debris from getting under molding, and may reduce wind noise. Water running under the side molding is fine, and is part of intended design. Which we need to take cannel not blocked.

The side molding is parts of rain cannel (gutter), both on top and the underside. We do not want any blockage under side molding, such as glue (black ploy) or debris.

4 aluminum plastic coated rivets, are used to secure each side molding. The 4 holes in the bodies "A" pillar, that rivets are secure in, are factory painted. We must to take care, not damage paint and expose body metal. If damaged, we must repair (paint). Even a microscopic nick, under windshield molding. Will result in rust! The molding will hold in moisture, so even nicks become very bad rust area, that grows and grows.

Nicks in the paint happen due to improper technique, tools, parts or carelessness. Like drilling out old rivets nicking paint, cutting old black poly nicking paint, metal tools nicking paint, screws cutting into paint all are beginning of rust issue.

If I find it is best to remove side molding, if I find any issue or have concerns. Like:

• Gap or looseness between side molding and A pillar.
• Alignment of molding incorrect which may indicate new holes drilled.
• Any signs of damage to A pillar along seam where side molding butts to.
• Any missing rivets or if screws used.
• Signs of new holes drilled.

Tip:
There is a skinny strip of rubber molding, covering the 4 rivets. These needs to be in place, also. I pull it out of side molding, to inspect rivets.

Bye Bye to The King: Windshield rust repair ++

Well I can't believe I sold The King (2001LC Thunder Cloud NO NAV ), He's be with me near 14 years and has been the most reliable vehicle I've ever had the pleasure of owning & driving. When I bought it, I ask at the Toyota parts counter; "what part or parts are you seeing purchased the most...

forum.ih8mud.com

100 series Windshield Replacement Question: OEM vs. After Market Glass

^^foam/soapy water/shaving cream around the outside perimeter and then light blasts of compressed air from the inside. Pure genius. So simple but so smart. Thx

forum.ih8mud.com

 

[W03DY]

Has this leak actually happened to you from using screws ? I'm curious because I don't believe using screws is a problem and this is just another forum myth that gets passed along. Spoke with plenty of experienced glass installers but what the heck do I know . Mine has screws and no leaks for idk 5+ years so just curious if anyone has actually related using screws to a leak

I recently had the windscreen replaced and had the rust above it cut out. The screw holes definitely contributed to the leaking water they had started rusting too. I’d say a lot of glass installers will say screws don’t cause any issues because it’s not their car and they don’t care. If the screws haven’t made the holes too big get the genuine rubber coated rivets or get the holes welded shut. I welded the holes shut and used 3M tape to hold the side mouldings on

 

[Mike NXP]

I recently had the windscreen replaced and had the rust above it cut out. The screw holes definitely contributed to the leaking water they had started rusting too. I’d say a lot of glass installers will say screws don’t cause any issues because it’s not their car and they don’t care. If the screws haven’t made the holes too big get the genuine rubber coated rivets or get the holes welded shut. I welded the holes shut and used 3M tape to hold the side mouldings on

Hmmm bummer. Well hopefully this doesn't come back to screw me . So far so good I guess, but yeah I see how it may not be a good idea.