1999 Boxster soft top re-furb?
Discussion
Applying a good water repellant product can have great results. I have used Raggtopp and more recently the BMW MINI product. You don't need to do this to maintain the waterproofness as that is taken care of via the rubber layer in the sandwich but the cosmetic appeal of water beading on a recently treated top is well worth the effort IMO.
The marks that you see might be "wear marks" where the fabric has worn aginst itself when the top is in the stowed position. There isn't much you can do to improve that but you could get out your old Remmington Fuzz-away (tm)...
You can clean the rear window with specialist products but you need to be something of a contortionist to do the inside. Perhaps a bit extreme but you could disconnect/unbolt the whole top and really give it a good seeing to...
A new top is the only real way to really restore the look to as-new condition and there are quiet a few options out there including used OEM tops from a younger car.
I put a used '04 top (and frame) on my '02 for about £1k. You can get aftermarket glass window tops for the eariler frames from aroundvhalf that but they look slightly compromised IMO.
A brand new top and frame from Porsche is available to order but the price is around EUR7k!
The marks that you see might be "wear marks" where the fabric has worn aginst itself when the top is in the stowed position. There isn't much you can do to improve that but you could get out your old Remmington Fuzz-away (tm)...
You can clean the rear window with specialist products but you need to be something of a contortionist to do the inside. Perhaps a bit extreme but you could disconnect/unbolt the whole top and really give it a good seeing to...
A new top is the only real way to really restore the look to as-new condition and there are quiet a few options out there including used OEM tops from a younger car.
I put a used '04 top (and frame) on my '02 for about £1k. You can get aftermarket glass window tops for the eariler frames from aroundvhalf that but they look slightly compromised IMO.
A brand new top and frame from Porsche is available to order but the price is around EUR7k!
Edited by MogulBoy on Thursday 23 February 22:28
Next attempt, procure the following:
Stage 2: slather with shampoo
Stage 3: every single inch scrubbed with nail brush at least twice
Stage 4: rinse, scrub again, rinse again, repeat until it no longer bubbles
Stage 5: allow to dry
Stage 6: paint on the nikwax, wiping off drips onto the metalwork (this is quite important, as oddly enough its waterproof)
Stage 7 : go "ooh"
ETA: Forgot to say, you will not get rid of the stretch mark on the first pic, sorry.
- nailbrush
- Johnsons Baby Shampoo
- 1/2" paintbrush
- great big bottle of brush-on Nikwax or similar waterproofing for tents
Stage 2: slather with shampoo
Stage 3: every single inch scrubbed with nail brush at least twice
Stage 4: rinse, scrub again, rinse again, repeat until it no longer bubbles
Stage 5: allow to dry
Stage 6: paint on the nikwax, wiping off drips onto the metalwork (this is quite important, as oddly enough its waterproof)
Stage 7 : go "ooh"
ETA: Forgot to say, you will not get rid of the stretch mark on the first pic, sorry.
randlemarcus said:
Next attempt, procure the following:
Stage 2: slather with shampoo
Stage 3: every single inch scrubbed with nail brush at least twice
Stage 4: rinse, scrub again, rinse again, repeat until it no longer bubbles
Stage 5: allow to dry
Stage 6: paint on the nikwax, wiping off drips onto the metalwork (this is quite important, as oddly enough its waterproof)
Stage 7 : go "ooh"
Where were you earlier today - nailbrush
- Johnsons Baby Shampoo
- 1/2" paintbrush
- great big bottle of brush-on Nikwax or similar waterproofing for tents
Stage 2: slather with shampoo
Stage 3: every single inch scrubbed with nail brush at least twice
Stage 4: rinse, scrub again, rinse again, repeat until it no longer bubbles
Stage 5: allow to dry
Stage 6: paint on the nikwax, wiping off drips onto the metalwork (this is quite important, as oddly enough its waterproof)
Stage 7 : go "ooh"

randlemarcus said:
RESSE said:
Where were you earlier today 
Remembering how fricking long this takes to do. I think it took me about three hours of overcast weather for my Dad's 911 before sale. Do not try in full sun (ask me how I know)
Thanks for you input/info.
RESSE said:
Attempting it indoors (emphasis on attempting)!
Thanks for you input/info.
Up to the drying bit, get it outside. You will not get the shampoo out with a damp cloth. A decent flow of water really helps.Thanks for you input/info.
Has sir considered boiled linseed oil for the plastics? N.B. read the bottle, and do not leave the used cloths in amongst the fuel cans. Much more fun than boring Halfords products

randlemarcus said:
RESSE said:
Attempting it indoors (emphasis on attempting)!
Thanks for you input/info.
Up to the drying bit, get it outside. You will not get the shampoo out with a damp cloth. A decent flow of water really helps.Thanks for you input/info.
Has sir considered boiled linseed oil for the plastics? N.B. read the bottle, and do not leave the used cloths in amongst the fuel cans. Much more fun than boring Halfords products

PS Read the bottle - my wife would find that hilarious that I read the instructions................
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