BRS Pros helped Bill with his crawl space and radon and here are some steps we took… Mold Remediation – Phase I of this work consisted of cleaning the crawl space sub-floor of wood decaying fungi and organic growth. After cleaning, Phase 2 consisted of fogging the crawl space. Phase 2 will kill 99.9% of mold spores and will inhibit the growth of mold and mildew. Decay and organic growth will be treated and cleaned. Spray Foam – Class A fire rated polyurethane closed cell spray foam insulation was sprayed on the rim joists and sill plates. It prevents air infiltration (unlike fiberglass insulation) and will insulate the wood band plates (rim joists) above the masonry foundation wall. Closed cell foam insulation (moisture and air will not penetrate this product) will fill and seal cracks, cavities and joints. Fiberglass insulation will not perform to prevent air infiltration. This product application will reduce cold spots in the floor adjacent to the main level walls. Foundation Vents – Foundation vents were completely sealed with poly-foam insulation from the interior of the crawl space preventing exterior air and moisture from getting into the crawl space. Radon – The radon piping system installed below our 9 mil ground liner to a 4″ PVC suction pipe that was extended to the exterior of the home. This is where the radon fan was installed. The radon vent pipe was mounted to the exterior wall and terminate above the roofline to help expel the radon gas safely. The manometer gauge (homeowner radon fan monitoring vacuum gauge) was installed on the suction line of the system in the crawl space for easy viewing. Also added a Radon System Alarm – Radon System Alarms are now required on all newly installed residential radon systems. This unit is a vacuum monitoring device utilizing piezo resistive pressure sensor (PPS) technology. This alarm will provide an audible and visual indication to alert the homeowner when the radon system is not moving sufficient air in the event of a power loss to the system. Blanket Insulation – Installed fiberglass blanket insulation with our white 9 mil vapor barrier to the interior perimeter of the foundation walls. Insulation is 4″ thick which offers an R-13 insulation factor (code compliant for new construction). Insulation was hung approximately 6″ from the top of the interior masonry foundation wall to provide a termite inspection and will cover wall to approximately 4″ off the ground. Ground Liner 15 Mil – Installed our Premium (walk on, store on) 15-mil white 100% woven reinforced radon ready crawl space system. The liner was mechanically fastened with nails designed for foundation walls to provide a permanent fastening system. (Caulking or taping liner to foundation walls is a temporary system and will become a maintenance issue.) The premium ground liner was nailed/sealed approximately 6″ to 12″ above the earth in the crawl space to the foundation wall. 15-mil woven ground liner will control moisture vapor and dampness from the ground. Most crawl space liners are partially reinforced, our woven liner is 100% reinforced and tough unlike competitive brand liners that are only 10% reinforced. This product will not off gas (known on Google as “crawl space cat urine odor”, go ahead and check it out), we guarantee it!! Our woven ground and wall liners are antibacterial, meaning mold and other organic growth will not grow to the liner. Dehumidifier – Aprilaire has been the industry leader in residential humidification control since 1954. The Aprilaire Model E100 “Energy Star” rated dehumidifier delivers 23% annual energy savings above conventional products, a high-capacity solution designed for humidity control in crawl spaces and basements. The Model E100 potentially can remove up to 95 pints of moisture per day! Proudly made in the USA. Five year manufacturer’s parts warranty when installed by BRS Pros, an authorized installer for Aprilaire. Lastly, we preformed a post radon mitigation test that came back at 0.5 pCi/l! It was a pleasure helping Bill make his home happy, healthy, & safe!
