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STR lower windshield sealiing fascia backside insulation
I have this piece out because everything came out for the under the SC hose failure. It may have been out before when my windshield was replaced.
There was precious little left of it so now it's all been removed.
Has anyone com up with a replacement material?
What was in there reminded me of the old housing insulation that was made from shredded paper.
This is what I used to replace the degraded padding under the screen base.
Check on line locally for a 1m x 1.5m roll. and the material spec.
Cut to a template and glue on with spray glue.
foam installed It covers the right hand side to about 60% on UK RHD cars, You can cut out the holes and cut aways in the foam with a hot iron.
Last edited by bydand; Aug 6, 2023 at 02:40 PM.
Reason: Photos and comments added.
"It covers the right hand side to about 60% on UK RHD cars,"
Yes, The original was complete and in tatters, and I replaced it in closed cell foam. You may still see the plastic weld stubs in the plastic cover where your original was stuck on.
Since most of mine was already gone I'm not really sure was there. Did the original only go half way across?
Check my photos on my previous post. You do need to cover the whole bottom length of the plastic sill finisher. The suitable material I used for that area that was wide enough to cover the whole width so I did not have to join two pieces, your choice.
Also as per my previous post make sure you replace the foam around the air cabin filter while you're in that are, unless you want to breath in oil, engine and road fumes and have hot air entering the cabin..
Since we have moved on from sound insulation on the lower screen fascia, and moved into cabin air duct sealing please see below.
The original Jaguar sound insulation pad is as per the photos in the above posts. This originally Covers about 60% of the lower screen fascia and is 1/4" 6mm thick mostly, on the RHS. (UK RHD Car)
The Cabin air duct inlet (LHS on a UK RHD Car) has a Rubber seal, and smaller edge Left & right side foam type weather seal approx. 25mm wide which seals to the underside of the bare plastic lower screen fascia.
Red line showing the rubber sealing strip LHS of car. With cabin filter in place.
Note:
One is an originally weak sound insulation, while the other air duct type rubber seal. Is a seal to encourage outside air to enter the cabin air duct.
By the rubber seal atop of the cabin Air duct sealing, compressing against the bare plastic of the screen fascia.
Foam weather seal 25mm wide on the edges L&R. Which also seal to the bare plastic of the Screen fascia, on the RHS anyway or on the engine bay inner wing structure.
The edge foam weather seal type seal in the lower cabin air box. LHS of car and the box and lower body shell in engine bay.
The RHS of the air box looking onto the screen. Replace with 25mm wide foam weather strip.
I would say the sound insulation pad is not that critical, and may be more to do with reducing wiper motor noise and in most cars now will be completely destroyed.
Closed cell foam, would be a good and long lasting replacement for this.
The (edge) air sealing for the cabin air inlet duct, would be best served with a narrow 25mm band of weather strip type foam, which being a better material and designed for a range of temperatures and compression cycles. Would be a better fit and likely why Jaguar choose this sealing and material option. i.e direct to the bare plastic screen fascia.
Various domestic weather strip material is easily available in various grade at most DIY stores.
Next time you have you lower screen Fascia off to replace the cabin air filter check it out.
The large rubber seal on the leading edge of the air duct,
and the L&R weather seal foam edge sealing, for slight leakage on each side of the air duct housing.
If you do cover the whole screen fascia with closed cell foam, and the air duct with weather seal strip what is the real advantage apart from having two different materials in contact, Foam and rubber of varying thicknesses and under excessive compression.
One would suggest poorer contact sealing and wear between the foam sound insulation/weather seal strip and the rubber seal.
Which would be better sealed by being in contact with the bare plastic underside of the screen fascia.
Further, The rear bonnet Rubber seal, seals against the Bonnet (Hood?) and the lower screen Fascial acting as another seal barrier to the cabin air duct inlet.
I can assure you that the 'windscreen finisher' insulation on my RHD (Australian delivered) S Type R covered the whole width of the plastic 'windscreen finisher'.
This material under the finisher is the same insulation material that Jaguar used underneath the rear parcel shelf of my STR and was heat spot pressed on to the plastic finisher.
This factory insulation material is able to be compressed to probably around 2mm.
Despite what is shown on the Jaguar/Land Rover classic site the insulation was a one piece strip on my car.
The air box top rubber seal pressed against this insulation.
The engine bay brace also did so.
Not sure Bydand why yours seemed to only cover 60% or so of the finisher? Maybe a change somewhere in the production run.
I did mention a while ago that I ran the car for several days without any windscreen finisher (or air box in fact) at all. There was a substantial amount of noise and at idle I could see 'heat waves' wafting up out of the bonnet as well! Without the airbox the heat coming into the cabin was amazing and the smell was 'not the best'..
Yes, you would need to be aware that if you do use a material under the finisher that will not compress well (unlike the original) it may not form an effective seal above the rubber strip on the air box; so a 'strip' may need to be cut out here. The same would apply to the engine bay brace; as I mentioned I would cut this part out of any retrofitted material (even the original insulation material if you can still get it) to avoid rusting the engine bay brace as this area is a moisture trap.
Please note that the air box foam does extend towards the rear of the air box, sealing the airbox against the firewall as well. Refer to my original post: https://www.jaguarforums.com/forum/s...ehicle-240559/
Same material found under the rear parcel shelf. I was able to compress it to probably around 2mm or even less. This photo shows evidence of a heat spot weld, which is how the material was secured on. My X202 STR had this material across the whole of the windscreen finisher. Was also in one piece.
On Both/ All My Uk RHD Lower screen fascia, 2005/06 S Type 3.0 Ltr Diesel Spares car, Ex 4.2 N/A 2006 and on the 2007 STR. Have the sound insulation pad only covered 60%. and had the same plastic welded stud type connection as those in you photo.
Come to think of it the 2000 3.0ltr S type, completely different Lower screen fascia, and better insulation material, had a full length insulation pad, in good condition.
So suggest both/all fall into Vin N14411 till the end. Pt Number XR 852162.
The OP being a STR 05.
Would not recommend fitting 6mm Closed cell foam across the full Fascia, as not going to compress easily to 2mm and for the reasons stated.
The material is water proof, heat resistant and good in all other aspects.
We live and learn.
Last edited by bydand; Aug 10, 2023 at 09:41 AM.
Reason: added info
Today I will be seeing my car again at the mechanics shop. The SC is out and presumably serviced. He's awaiting the Fuel injectors o-ring seals. i'm delivering 4 5 gallon gas cans so that he can offload the 4 YO gas from the tanks which is about 3/4 full.
He thinks he'll have the operable on Monday. I think he's planning on working over the weekend or at least Saturday.
I'm going to take the opportunity to see how this windshield finisher fits with what's underneath it. I suspect that the OEM insulation has to conform to a somewhat irregular surface and so must be soft and compressible?
The oem insulation parts are still available from the UK but I don't know yet about locally in NJ. In any event this goes on dead last so if it isn't quite finished the car can still operate even if it is a bit noisy. The other piece of duct work will have to have some sealing tape though. That doesn't look like anything super special. About 1/2-3/4 " wide and 1/8" thick with a self stick back. Closed cell and maybe silicone?
So I've decided to order the OEM insulating pieces though they may arrive after car has been reassembled. This finisher piece is near the end of assembly and I think the car can at least be driven and tested WO it on the car????
Somehow the intercooler manifold hoses didn't get ordered and those should arrive today. So we are getting close.
STR lower windshield sealiing fascia backside insulation
