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Home My WebLink AboutMold Fungus Inspection Report 08.02.2014HealthSa f e HealthSafe Inspections Inc 1052 Vine St Aspen CO 81611 970-920-2100 Jim Baker, ACAC Board Certified CMRS, CSDS CDPHE Asbestos Building Inspector Certification #13437 MOLD -FUNGUS INSPECTION REPORT & REMEDIATION VERIFICATION DATE: 08/02/2014 CLIENT: Jack Wilkie Builder 0020 Sunset Drive, #3 Basalt CO 81621 PROPERTY ADDRESS OF PROJECT: RE: 200 Diamond Ranch A Drive, Carbondale, Colorado 81623 For orientation purposes, the front door of the house faces east and the overhead garage doors face north. CLIENT BACKGROUND & CONCERNS: The single family house with full basement and attached garage is undergoing a significant interior remodel. During that remodel, mold was discovered on the interior of wall cavities associated with the exterior wall assemblies. Jack Wilkie Builder hired HealthSafe Inspections, Inc. to consult with and determine how to remediate the mold. This report discusses the remediation protocols and post -remediation verification. INITIAL VISUAL INSPECTION & FINDINGS: The property was initially inspected during the morning of Monday, July 29, 2014 with Shawn Herein ()flack Wilkie Builder and Eli Evans from Mr Vac. Jim Baker of HealthSafe Inspections, Inc. was the consultant/inspector and the author of this report. At the time of inspection the entire exterior wall assembly was stripped of its drywall and fiberglass insulation. At the time of the initial inspection, the exterior walls and some roof sheathing had recently been cryo -blasted with dry ice pellets with the purpose of removing the mold from the oriented strand board (OSB) sheathing and some dimensional lumber framing. The inspection was in all areas of the house, including the upper floor area, the main floor area and the basement north end. Upon close examination it was apparent that some locations of the exterior sheathing the OSB was still intact without deep penetration of the mold -fungus into the bonded wafers; on these surfaces the bonding of the wafers was structurally good and the mold growth appeared to be superficial or on the surface rather than penetrations through several layers of the OSB. In these locations the mold removal was a success, and the areas were accepted as mold remediated, minus the applied industry -accepted anti -fungal sealant. These locations were the entire upper floor, the main level east end, south and north narrow areas and fireplace room. Upon close examination of the most contaminated areas there was deep penetration of the dry ice pellets and obvious deeper delamination and destruction of the OSB wafers due to the combination of the presence of long-term destructive moisture and fungal growth, The chips or wafers could easily be pulled away from the surface by hand. There was still mold visible below some of the wafers, A significant depth of contamination and delamination caused this inspector to require replacement of the OSB sheathing in these areas, which would also require the removal of the siding: 1. north of the main entry door 2. a significant portion of the main floor north wall, especially below the windows and in a former bathroom (NW corner) 3. A significant portion of the main floor south wall on the north end, what appears to have been a bathroom and former exterior doorway. These locations were not sealed with the white pigmented anti -fungal sealant, as were the rest of the walls. A few photos below indicate these areas which will require OSB sheathing replacement: 2 3 4 PREVENTION Consultation was given on the hypothesized cause of the moisture which caused the destruction and contamination in the first place. It is apparent that these locations of deep penetration were on shady sides during the winter months at the peaks of gabled ends of the house: north of the entry door outset causing a shady area, the north side of the house which gets not winter sun, especially below windows (cold air locations or trapped air in the gable areas above) and the bathroom where more moisture was produced in a colder northwest corner of the house. Also what was noticed is that the wall ends which butted with these exterior walls were where moisture and mold collected—an uninsulated box end or stacked lumber; these locations allowed cold surfaces to mix with the warmer humid air indoors and create dew point locations. These locations need better insulation and air leaks sealed to prevent this mix of warm humid air meeting these cold surface areas. With closed cell foam insulation application on the exterior it will raise the dew point and seal out cold air leaks. Additional fiberglass insulation will create a thermal barrier from the warm inside and the cold outside. Windows and doors should be sealed well, as these are locations of notorious air leaks, let alone these denser building materials not having a good thermal boundary. REMEDIATION CONCLUSION: The specified areas of original OSB which were cryo -blasted and sealed with the industry -accepted anti -fungal sealant are verified to be properly mold remediated by industry standards of mold remediation according to the following documents: IICRC S520 Standard & Reference Guide for Professional Mold Remediation, Fungal Contamination: A Manual for Investigation, Remediation and Control by Holly Bailey, AIHA Green Book: Recognition, Evaluation and Control of Indoor Mold. The remaining untreated locations of OSB sheathing will be replaced with new. Those framing members of dimensional Iumber were properly and thoroughly remediated with the cryo -blasting. When the siding and sheathing are removed, HealthSafe Inspections, Inc. recommends that the exterior sides of this framing lumber be inspected for mold contamination and be properly remediated and sealed as needed. Sincerely Submitted, Jim Baker DISCLAIMER: HealthSafe Inspections Inc is only reporting present conditions limited to the scope of work hired for. HealthSafe Inspections Inc is not responsible for hidden or inaccessible areas which were not accessible or inspected or part of the scope of this 5 project. HealthSafe Inspections Inc is not responsible for future conditions beyond the date of the final post -remediation verification inspection on Thursday afternoon, July 31, 2014 when the photos above were taken. It is important to keep in mind that mold spores are present everywhere, ubiquitous on earth, and therefore indoor conditions should reflect "normal indoor fungal ecology" rather than "zero" indoor fungal concentrations. Some mold is acceptable after a remediation, otherwise it would require the whole disassembly of the structure or burning it down. The remediation above reflects professionally and industry accepted methodologies. Current Certifications: Colorado Asbestos Building Inspector (#13437) http://www.cdphe.state.co.uslapiasbestos/index.html American Council for Accredited Certification Board Awarded Certifications: 1. Council -Certified Indoor Environmentalist (CIE), former 2005-2013, applying for CIEC 2. Council -Certified Microbial Investigator (CMI), former 2005-2013, applying for CMC 3. Council -Certified Mold Remediation Supervisor (CMRS) 4. Council -Certified Structural Drying Supervisor (CSDS) JAE LY•r.I 8F COg ""4111Z° " 4413222a46 1AW3 A, RAMA. 2014 \t QRS 4 fr7116.trAC NAT fI kw II Fav u.1,-Nv1 Indoor Environmental Standards Organization http://www.acac.org http:/lwww.aiga.org http://wwwaeso.org IICRC former Certifications: 1. Master Textile Cleaner 2. Master Water Restorer 6 IANESA .SR. GC'gly�µc+4 3. Master Fire & Odor Restorer 4. Applied Microbial Remediation Technician http://www.iicrc.org