Step 3. Loosen the carrier plate. Take your 10mm socket and remove all the 10mm bolts
except the two that are arrowed below. These two remaining bolts should be wound out
nearly all the way, allowing you good access to the rear of the carrier without completely removing it. You
could remove these last two bolts but your assistant would then have to hold the carrier while you fit the sealant strip - but you really need your assistant to hold the roll of sealant so leave the bolts in position...
Front door...
Rear door...
Now you need to break any seal between the door frame and the carrier. The best way to do this is with the large flat-head screwdriver you hopefully have ready, resting on a towel so you don't kill any paint...
Here's where my seals disintegrated, seem to be very common failure areas. Affected areas are between the arrows...
Front door...
Rear door...
Now the carrier is loosened, get to work on that seal and show SEAT how it should have been done in the first place! Start wherever you like and pull the old seal off slowly. I made an exception on the rear doors as I couldn't get as much clearance behind the carrier as I wanted and so left some of the seal in place. The next step will show what I left in place. It's adhesive backed but will come off cleanly if you are lucky. I wasn't, and was left with a few inches-worth of rotten seal on each door that had to be scraped off. I used my trusty T20 to get into the channel where the worst of the remaining rotten seal (and brown gunk) was hiding. You don't need to get the surfaces surgically clean but they do need to be dry and free of as much of the old seal and gunk as possible.
Step 4. Fitting the new seal. See the pics below. I started where I did on the front door (arrowed) due to the electric window wiring loom getting in the way. It seemed like a good starting point and worked well for me. Slowly feed the butyl sealant strip into where the old seal lived.
Front door...
As mentioned in step 3 I didn't replace the whole seal on the rear doors due to access. Here's what I
did replace...
Step 4. Put it all back together. Self explanatory really. Replace any trim retaining clips that broke. Here's where I used the wire cutters to grip and wiggle free any snapped clips or clips that came off the door cards and could be reused…
And after all that, only one bust clip per door. Not bad going!
Once you've done one side the other will be a piece of cake. I'd read all the guides but still wasn't sure how difficult it was really going to be. As it is, the job isn't difficult at all. All four doors can easily be done in an afternoon once you have everything prepared. One final note about the butyl sealant strip, it's pretty sticky stuff (even more so when warm) and it's much easier to handle when it's cold. For anybody reading this in the summer, stick your sealant in the fridge before you need it...
Cheers all, DubSteve