Attic Mold Removal in Salt Lake County

Attic mold is almost always a moisture problem from inside the house or from the roof, not from outside air. The usual causes:

• Roof leaks and ice dams. Water that gets under shingles or flashing soaks the decking and insulation from above. A roof leak is the most common cause we see.
• Exhaust fans that vent into the attic. Bathroom, kitchen, or dryer exhaust that dumps into the attic instead of outside carries moisture straight onto the sheathing. The EPA recommends venting bathrooms, clothes dryers, and other moisture-generating sources to the outside.
• Warm, humid air leaking up from the living space. Gaps around light fixtures, attic hatches, and plumbing chases let indoor air into the attic, where it condenses on cold sheathing in winter.
• Blocked or missing ventilation. Insulation pushed into the eaves, covered soffit vents, or too little exhaust ventilation traps moist air.

In Utah, we usually find attic mold in spring, when things start heating up: snow and ice on the roof thaw, roof leaks open up, and moisture gets into the attic.

Attic remediation follows the same principles as any mold job: contain it, capture what’s disturbed, remove what can’t be cleaned, and fix the moisture.

• Containment. The attic access is sealed off from the living space and the work area is kept under negative air pressure with HEPA filtration, so spores stirred up by the work aren’t pulled into the house.
• Removal and cleaning. Contaminated insulation that can’t be cleaned is bagged and removed. Sheathing and framing are cleaned, HEPA-vacuumed, and treated. Severe growth is removed with dry ice blasting; lighter growth is wire-brushed.
• Drying and verification of moisture. Wood is brought back to normal moisture levels and the readings are recorded.
• Fixing the cause. A misrouted fan duct, an air leak, or a ventilation problem has to be corrected or the mold returns. If roofing, insulation replacement, or other construction is needed, our sister company Keystone BuildWorks, a licensed and insured contractor, handles it as one coordinated job. For insulation replacement, Keystone BuildWorks hires an insulation company.

Everything is photographed and filmed before, during, and after.

Most mold jobs, attics included, take 1 to 3 days. After the work, the area airs out for an hour or two before anyone goes back in. Larger attics or jobs that need insulation removed and replaced can take longer, and any rebuild is scheduled after remediation. For typical price ranges, see the mold remediation cost guide.

• Don’t disturb it. Moving insulation or scrubbing sheathing spreads spores into the attic air and, through gaps, into the house.
• Look for roof leaks first. A roof leak is the most common attic mold cause we see. Note water stains on ceilings below, and any recent storm or ice-dam history.
• Check the bathroom and kitchen fans. If you can safely see where the fan ducts end, note whether they stop in the attic instead of running to a roof or wall vent.
• Keep the attic hatch closed and limit trips into the attic until it’s inspected.
• Take photos of what you can see from the hatch, with dates, for your records or a claim.

If you’re selling, attic mold often shows up on the buyer’s inspection report. Getting it remediated and the cause fixed, with photos and video of the work, gives you documentation to share. Buyers who want independent confirmation can hire their own tester.

Attic remediation is done by Keystone Restoration’s IICRC-certified team. Owner Seth Saxton (IICRC technician #70229519) holds the IICRC AMRT (Applied Microbial Remediation Technician) credential, the mold-specific certification, along with WRT, ASD, FSRT, and OCT. Keystone Restoration is an IICRC Certified Firm (#70266523), and the team has 15+ years of combined restoration experience.