BLACKIEMAY

Hi, can anyone advise what sealer I should use on rear hatch glass please.
Thanks
Dougie

Mrmerlin

Windshield sealant,
the stuff that comes out of a caulking tube,
It can be bought at the body shop supply store.

NOTE before doing anything read the WSM on glass installation,
found in the body section

BLACKIEMAY

Thanks, but standard Mastic/Caulk won't seal for very long, glass isn't tempered to suit modern primers, Must be Butyl or suitable alternative.
Cheers

Banacek

Butyl tape fitted from Porsche on rear hatch. Bonded front screen when fitted use a Sikaflex and primer activator to stop windscreen from being pushed out from inside .

BLACKIEMAY

Thank you, just what I was looking for. I knew standard mastic wouldn't do. Don't suppose there is an alternative to Butyl ??

Banacek

Standard Sikaflex/ Tiger seal adhesive sealant could be used on rear hatch as the chances of rear hatch being pushed out ?.have had rear hatch glass pushed out butyl tape when having hatch removed and placed on boxes on glass to work on hatch frame.

The Forgotten On

If you're worried just get the Porsche adhesive sealing strip 477898011A.

I had mine redone by a Porsche contracted glass guy using a 3M material that is butyl based IIRC. It's been 5 years since I had it done though...

Speedtoys

I might replace mine..the tint is ancient, pre-me, and I have no idea what defroster damage will be done to remove it.

Mrmerlin

if you have old tint then you will probably find the glue layer has become one with the defroster grid,
the only way to remove the tint is with a razor blade this takes off the grid as well,

I have removed 3 grids so far, not because i wanted too,the tint would not come off the glass any other way.
Its most comfortable to put a quilt down on the hatch floor, then get in ,and close the hatch then start scraping.
NOTE for the time that you might use the rear window defroster ,
you may never need it unless you use your car in the winter where it gets cold and moisture is present

dr bob

For many tint removal challenges, remember that almost all tint adhesive will come off with an ammonia/water solution. Easiest if the hatch is off the car, where you can flip it over, spray the tint with the solution, and then tape a plastic bag over the wet tint and leave the whole thing out in the sun for the afternoon. Tint all but peels itself off. You can do it in the car too, same deal but with a black plastic bag securely taped under the glass, hatch propped up level. The vapors do the work. Protect the car under the glass of course. Then summer afternoon sun and the ammonia/water vapors will slowly soften the glue on the tint. A plastic soft-bristle scrub brush is the weapon of choice for detailing along the heater wires, after sacrificial towels get the bulk of the adhesive off.