Wife and I just got back from a week in Oregon working on the property. Oregon rental laws are a bit weird in that per our lease agreement we can only be on the property from 8am to 6pm Monday through Friday. Tenants have been great and would probably let us be there on the weekends but we would rather not intrude on their personal time as much as possible.
On our last trip we completely cleared out the shop, pulled out all the in-wall wiring and power washed the floor in preparation for a contractor to come in to install a new insulated overhead door, insulate the walls & ceiling, drywall and paint. He finished up a couple of weeks ago. What a difference.
Shop before.
After.
The photo above is after I did the crack repair and ground the floor in preparation for the penetrating sealer. There is no vapor barrier under the 40+ year old slab and during the winter moisture comes up through the slab. Unfortunately I did not take photos of the crack repair.
The crack repair was done with a urethane crack repair product called Emecole 555. It is a two part system that is very viscus and cures in about 15 minutes. The cracks were routed out with a v-groove diamond blade on an angle grinder to about a 1/4 inch depth. The crack is then wetted with the urethane and back filled with fine silica sand while wet. After back filling with the sand another coat of urethane is put on to saturate the sand. It is a hectic process with such a short working time but allowed me to to the grinding immediately afterward.
Repaired cracks after grinding.
For the moisture issue I found a product Called BoneDry that penetrates the concrete to create a moisture barrier within the concrete itself. Most sealers are not supposed to be used without a vapor barrier under the slab. In some cases the hydro-static pressure can rupture the concrete. As a construction consultant I do product specification and was skeptical of the manufacturers claims. They are also a company who aggressively markets to the DIY homeowner which is not always a good thing when looking for high performance products. Fortunately I was able to find a contractor who does remedial work for the Navy who has been using the product for over 10 years without out any adverse affects so I went forward with it. Time will tell.
Because of the age of the floor it was necessary to grind the entire surface to make sure it would accept the sealer. My wife took a photo of me blowing out the concrete dust after grinding the floor. This was after I swept it out twice!
After putting on the vapor barrier I installed storage platforms on both sides that are 8 feet off the floor to take advantage of the 12 foot ceiling. I won't really know the final equipment layout until I have the equipment there but figured with this configuration I could put in work benches and upper shelves/cabinets or full height storage in some of the 2 foot deep bays.
Me putting on the final surface sealer to protect the moisture barrier.
Despite the hectic week of working on the shop, cutting down a few dead trees and raking another 10 yards of pine needles we loved every second just being there.