Roof Leaks

[MatthewWBailey]

"Fully Gone Thru by our shop" Means that the roof leaks when it snows. . After getting a few eyewashes while driving, I pulled the turret cover off. Seems it was sealed with some kind of hard sealant like latex caulk. So it was glued on there. Pretty piss poor job IMO. See pics.

In the EMS viewer there are 2 different seals, one for the "Hatch" and one for the "Machine gun Mounting kit". I bought the 12418327 from Memphis since that looks rather robust. I guess the machine gun hole is bigger than the roof hatch hole.

 

[Ronmar]

Mine had a strip of tape sealant applied around the circle. Except the bright light that put that strip in, left a gap between the two ends of the tape where they overlapped instead of running them into contact with each other… took longer to take the cover off than it did to fix it…

 

[GeneralDisorder]

That's not stock - someone tried. Stock it is just foam tape and sikaflex around the perimeter so it's easy to peel it off for a weapons system.

My HIMARS hatch is sealed VERY well since it's designed for the cab to be pressurized above atmospheric. It uses two rows of foam tape and then an inner and outer bead of sikaflex and then around the perimeter and the bolts. It took me 10 hours to remove it from the HIMARS cab due to glue. I had to use a bottle jack and a 4x4 to push the hatch up while hacking away at the sealant. Bent the floor of the cab quite a bit doing the deed.

 

[MatthewWBailey]

That's not stock - someone tried. Stock it is just foam tape and sikaflex around the perimeter so it's easy to peel it off for a weapons system.

My HIMARS hatch is sealed VERY well since it's designed for the cab to be pressurized above atmospheric. It uses two rows of foam tape and then an inner and outer bead of sikaflex and then around the perimeter and the bolts. It took me 10 hours to remove it from the HIMARS cab due to glue. I had to use a bottle jack and a 4x4 to push the hatch up while hacking away at the sealant. Bent the floor of the cab quite a bit doing the deed.

The sealant on this hardened from the heat. Once I got a screwdriver under the lip it came apart quickly. No sealing at all. I was literally in a shower after this last wet snowstorm.

I'm hoping the machine gun kit gasket will work.

Now I'm getting ideas of having a sun-roof made out of 1-1/4" polycarbonate. No harm in having some Armour

 

[Skyhawk13205]

My hatched leaked, I used 2 layers of butyl tape, and on the outside I used a paintable urethane sealant. I used a rubbing alcohol with a silicone fillet tool to get the sealant to flow well. I never painted over it so the the sealant is starting to weather but it still does not leak after 3 years. Anchorage Alaska’s weather is pretty dry compared to down south tho.

 

[serpico760]

"Fully Gone Thru by our shop" Means that the roof leaks when it snows. . After getting a few eyewashes while driving, I pulled the turret cover off. Seems it was sealed with some kind of hard sealant like latex caulk. So it was glued on there. Pretty piss poor job IMO. See pics.

In the EMS viewer there are 2 different seals, one for the "Hatch" and one for the "Machine gun Mounting kit". I bought the 12418327 from Memphis since that looks rather robust. I guess the machine gun hole is bigger than the roof hatch hole.

View attachment 945146View attachment 945147View attachment 945148View attachment 945149View attachment 945150View attachment 945151

Looks like a pretty pathetic attempt at roof sealant they did previously they did previously

 

[serpico760]

The sealant on this hardened from the heat. Once I got a screwdriver under the lip it came apart quickly. No sealing at all. I was literally in a shower after this last wet snowstorm.

I'm hoping the machine gun kit gasket will work.

Now I'm getting ideas of having a sun-roof made out of 1-1/4" polycarbonate. No harm in having some Armour

View attachment 945173View attachment 945174

I like the sunroof idea I was almost going to do the same.

 

[aw113sgte]

"Fully Gone Thru by our shop" Means that the roof leaks when it snows. . After getting a few eyewashes while driving, I pulled the turret cover off. Seems it was sealed with some kind of hard sealant like latex caulk. So it was glued on there. Pretty piss poor job IMO. See pics.

In the EMS viewer there are 2 different seals, one for the "Hatch" and one for the "Machine gun Mounting kit". I bought the 12418327 from Memphis since that looks rather robust. I guess the machine gun hole is bigger than the roof hatch hole.

View attachment 945146View attachment 945147View attachment 945148View attachment 945149View attachment 945150View attachment 945151

Less than surprised...mine from the same people leaks as well.

 

[MatthewWBailey]

Less than surprised...mine from the same people leaks as well.

Merry Men of Elysium. It must be a blissful thought to use Home Depot Window and Door caulk on a military truck's roof hatch. Using the same mentality, I'm going to deploy paper straws as rebar in my next concrete pour.

 

[MatthewWBailey]

I like the sunroof idea I was almost going to do the same.

I'm going to explore some quotes on a clear polycarbonate disc for the cover. I could easily apply window tint etc for heat reduction. Price may be prohibitive but worth a look.

Edit: first quotation is $2800 for a 1-1/4" thick by 49" diameter Polycarb disc that's transparent. So not sure it's worth the benefit.

 

[Third From Texas]

I'm going to explore some quotes on a clear polycarbonate disc for the cover. I could easily apply window tint etc for heat reduction. Price may be prohibitive but worth a look.

Somebody around here has a clear cover. I don't think I saved any pics.

edit: found this my cab interiors folder. I forget who's it is....

 

[Ronmar]

Somebody around here has a clear cover. I don't think I saved any pics.

edit: found this my cab interiors folder. I forget who's it is....

View attachment 945196

I seem to recall seeing at least 2 different versions of "moon roof" hatch covers... This one is operable, the first one I recall was fixed...

 

[Third From Texas]

Yep, I don't have a pic of the one that was bolted up.

I debated the idea but even with a sun shade on the inside, it would just add to the "greenhouse" effect that is no bueno down here in S.TX

They sure look cool, though (but it would just add to the hot for me).

 

[Ronmar]

Yea I am putting a fairing/box up there, so it would be like a sunroof in the basement

 

[MatthewWBailey]

Somebody around here has a clear cover. I don't think I saved any pics.

edit: found this my cab interiors folder. I forget who's it is....

View attachment 945196

That looks like the hatch opening, smaller than the MG turret opening

 

[Third From Texas]

That looks like the hatch opening, smaller than the MG turret opening

It's a custom build, obviously. Hard to tell exactly how much smaller it really is due to the fish-eye effect of the camera, but iirc it's not that much smaller. If I could find his build thread there's a lot of pics of it, but it may have been on FB.

 

[Reworked LMTV]

Somebody around here has a clear cover. I don't think I saved any pics.

edit: found this my cab interiors folder. I forget who's it is....

View attachment 945196

Just needs a brass pole.

 

[Third From Texas]

Just needs a brass pole.

Actually, the guy who bought my first LMTV uses it to pull his big flatbed down here for Spring Break.

The trailer has a DJ booth and a stripper pole...