I have some huge tarps that I can run across in front of the cars to do that type of work if I have too, but generally only light stuff is done there. I moved most of the heavy stuff, engine hoist and stand down to the basement level as the floor there is concrete. the floor where the cars are stored is wood with 3.. 8x16 rubber mats, one for each bay to do small stuff that won't make too much of a mess. Since i don't really do painting on cars I not set up fo things like that, I would rather farm that work out to someone who knows what there doing. I moved my other "Z" down stairs so when I pull the engine and tranny and do sanding on it it won't hurt too mnay things since the floor can handle it. A friend brought his 70 LT1 over so I could weld his muffler pipe back on and I did that out in the drive way, don't want to ruin those mats with hot sparks. If it was winter I probably would have just taken one of the mats up . the modine works great so far, but it's only been in the mid 30's, so I'll have to wait until december/january time frame to really see how it functions. It runs about 10-12 min every hour to keep the garage at a constant 60 degrees. I,m going to try and hook a meter up to it so I can tell how often it runs in a 24 hour period to be able to calculate fuel cost