Stopping underseal being scraped off when jacked up?

[xr2racer]

Is there some technique I can use when jacking to stop it? I've had it up quite a lot recently and its worrying me how much seems to be scraped off. :dapprove:

 

[Tom@JMS]

Rubber footed Jack would probably help, but I honestly wouldn't worry mate - if your car has as much underseal on it as mine you'd need more than a bit of jacking to risk corrosion

 

[rob72]

if you hav to scrape the underseal just re-paint it ...