Colorado Crawl Space Before & After Photos

During a real estate transaction - an inspection turns up what needs to be fixed with a property. This crawlspace was affected by a flood caused by a drywall screw in the pumbing in the bathroom above. The existing Radon System was not properly inslalled - the fan was in the crawlsapce (potential for radon to leak from the fan), the liner was sealed over the drywall and studs (trapping moisture and creating conditions conducive to microbial growth/structural damage), and the exteriror Radon vent pipe was only terminated 2' above the ground next to a window (potential for back drafting Radon into the home). We removed the moldy drywall firewall & insulation, cleaned and dried the wooden structural elements, installed a proper Radon/moisture mitigation system - replacing the liner and sealing it to the concrete, moving the fan to the exteriror of the structure, and running the vent stack to terminate above the roof. We replaced the fire wall with 5/8" drywall, closed the vent and air sealed the perimeter rim assembly, and reinsulated the subfloor. We also installed a SmartDrain with a WaterWatch alarm to notify the future homowners of a plumbing leak. We were able to solve all these issues, which allowed the buyer and seller to close on the propery. 

This crawlspace had a sewer back up onto an existing liner. After a hot water extraction & application of a botanical disinfectant we were able to salvage the existing liner and only had to replace a section of liner around the lift station. 

Rodents had made a pretty comfortable home in this crawlspace. We cleaned up the nests and debris to lay down our dimpled drainage matting and 20 mil thick CleanSpace liner, which we fastened and sealed around the perimeter. Then we reinsulated and sealed up the air gaps around the rim joists & sill plates with closed cell spray foam to help prevent any critters from entering in the future. 

This crawlspace was used for storage of building maintenace items, but was getting lost to the dust and debris. We removed the debris and existing loose layed liner. After installing the CleanSpace Encapsulation System we were able to shut down the dust and create a "Clean Space" to store the salvaged building maintenance items.

This crawlspace needed rodent infested insulation removed & replaced. While we were there we air sealed the perimeter rim assembly to shut down the air & pest infiltration. Copper wire mesh is stuffed into any cracks or crevaces 1/4" or greater before we apply closed cell spray foam 2" to 3" to the whole face of the rim joist,  overlapping the sill plate, & onto the top of the concrete foundation wall. This prevents rodents from chewing through the spray foam. We also bagged and disposed old building materials and clutter. Then we installed an isulation barrier to help keep the air clean and free of fiberglass particles - especially with the wine cellar's air conditioning unit pulling air from the crawlspace. Lastly we HEPA vaccumed the horizonal surfaces creating a clean storage room for the new owners.