For Homes
We sanitize attics in single-family homes across Littleton and the surrounding neighborhoods. Every job starts with an inspection and ends with a written report.
- Musty smell upstairs
- Mold after a roof leak
- Rodent waste in insulation
Attic Sanitization Littleton CO That Clears Mold, Odors and Allergens
Attic Sanitization Littleton CO is a full HEPA vacuum, antimicrobial fog and odor treatment that clears mold spores, rodent waste and musty air from your attic. We handle homes and commercial buildings across Arapahoe County, from first inspection to final air check. If you smell something sour upstairs or your allergies flare indoors, call (720) 953-3834.
Moisture readingsContainment setupPhoto documentation- Hatch sealedKeeps spores out of living space
- Air scrubbers runningFilters particles during the job
- Readings loggedBefore and after every visit
- Photos takenDocumented for your records
What Our Attic Sanitization Service Includes
Every job is scoped in writing after the inspection. The list below covers what standard attic sanitization includes. If your attic needs insulation replacement, roof leak repair or ductwork cleaning, those get added to the same scope so nothing falls through the cracks.
Full Attic Inspection
Moisture meter, hygrometer, thermal imaging camera and boroscope readings across the whole attic. We map wet wood, condensation zones and growth before quoting a single dollar.
Containment and Air Scrubbing
Sealed hatch, drop cloths, negative air machine and a HEPA air scrubber running for the entire job. This is what keeps spores out of your living space while we work.
HEPA Vacuuming
Every truss, sheathing board, top plate and duct surface gets vacuumed with HEPA filtration. This is the slow, unglamorous step that actually removes the contamination.
Antimicrobial Treatment
Fogged antimicrobial spray applied to all exposed wood surfaces. We choose between Concrobium, Benefect and RMR-86 based on what the inspection found and how the attic is ventilated.
Odor Neutralization
Source removal plus treatment clears musty smells at the root. We do not mask odors with fragrance. If the smell persists after sanitizing, we come back and find out why.
Written Report With Photos
Moisture readings, before-and-after photos and a summary of what was treated. Useful for insurance claims, real estate transactions and your own records.
Homes and businesses.
The approach is the same for a home and a business. What changes is the access, the schedule and who needs the paperwork.
For Businesses
We work with property managers, landlords and business owners on attics in offices, retail and multi-unit buildings. Scheduling is built around your tenants.
- Tenant odor complaints
- Pre-sale documentation
- Insurance claim support
What Attic Sanitization Littleton CO Actually Involves
A plain-language look at what Attic Sanitization involves and when it is needed.
See how it worksAttic Sanitization Littleton CO is the deep-clean step that follows mold removal: we HEPA vacuum every truss, sheathing board and insulation face, fog the whole cavity with an antimicrobial spray, then scrub the air until spore counts drop. It is not a spray-and-go job. We use a moisture meter and thermal imaging camera first, because sanitizing over an active roof leak just feeds the next bloom. A 1,200 sq ft attic usually takes four to six hours with a two-person crew.
Most Littleton homes we open up have the same story: a roof leak or poor attic ventilation let humidity build, condensation formed on the wood sheathing, and black mold followed. Add cellulose insulation that soaked up the moisture and you get musty odors pushing down through ductwork into bedrooms. That is when people start searching for attic sanitization in Littleton CO near me at 9 p.m. because nobody in the house slept well.
Sanitizing works when the attic is dry and the contaminated material is already gone.
- What it is
- A HEPA vacuum, antimicrobial fog and odor treatment applied to attic surfaces after debris removal.
- When you need it
- After a roof leak, rodent infestation, or when musty odors and allergy symptoms show up indoors.
- What to expect
- A 30 to 45 minute inspection, then a four to six hour job with containment and a written report.
Our Attic Sanitization Process, Step by Step
Every job follows the same five stages. You get a written scope before we start, a protected house while we work, and a walkthrough at the end so you can see exactly what changed.
-
Inspection
We start with a moisture meter, hygrometer and thermal imaging camera to map wet wood, condensation zones and hidden growth behind insulation. A boroscope lets us check inside wall cavities and around ductwork without cutting drywall. This takes 30 to 45 minutes and tells us whether you need sanitizing alone or full remediation first.
- Moisture check
- Thermal scan
- Boroscope look
-
Containment
We lay drop cloths, seal the attic hatch with plastic, and set up a negative air machine so spores and dust stay in the work zone. An air scrubber with HEPA filtration runs the whole time. Your furnace and AC stay off during the job so nothing gets pulled into the ductwork and pushed through the house.
- Hatch sealed
- Negative air
- Drop cloths
-
Debris Removal
Contaminated fiberglass insulation, cellulose insulation and rodent debris go into sealed bags and out through the hatch. We HEPA vacuum every exposed surface: trusses, roof sheathing, top plates and the decking around ductwork. This is the slow part, and it is the part that actually matters.
- Insulation out
- HEPA vacuum
- Surface clean
-
Sanitizing
We apply an antimicrobial spray to all wood surfaces using a fogger for even coverage into corners and truss bays. Products we use include Concrobium, Benefect and RMR-86, chosen based on what we found. Cure time runs two to four hours depending on temperature and airflow, and we do not rush it.
- Antimicrobial fog
- Cure window
- Air scrub
-
Verification
Before we pack up, we re-check moisture levels with the meter and hygrometer, confirm the attic is dry, and take photos of every treated area. You get a written summary with readings and images. If we found a roof leak or a ventilation shortfall, that goes in the report too, with what to fix next.
- Readings logged
- Photos taken
- Report sent
Tools and Methods We Use
Move across a circle, or focus it and press Enter, for an illustrative thermal view of the photograph.
Thermal Imaging Camera
Finds temperature differences that reveal wet sheathing, hidden leaks and condensation zones behind insulation before we start work.
Moisture Meter and Hygrometer
Measures wood moisture content and relative humidity so we know whether the attic is actually dry before we sanitize.
HEPA Vacuum
Removes spores, dust and rodent debris from trusses, sheathing and top plates without pushing particles back into the air.
Air Scrubber and Negative Air Machine
Keeps the work zone under negative pressure and filters airborne particles so spores stay in the attic, not in your living room.
Fogger
Applies antimicrobial spray evenly into truss bays, corners and tight spaces where a spray bottle cannot reach.
Thermal views are illustrative, generated from the photographs.
Methods
Boroscope
Lets us look inside wall cavities and around ductwork without cutting drywall, so we find hidden growth before quoting.
Dri-Eaz and Phoenix Restoration Equipment
Professional drying and air movement gear used when the attic is still wet and needs to be dried before sanitizing.
IICRC S520 Mold Remediation Standard
The industry standard for assessing and remediating mold. We follow it for containment, removal, cleaning and clearance on every attic job in Littleton.
Negative Pressure Containment
We seal the attic hatch and run a negative air machine so air flows into the work zone, not out of it. This is what keeps spores out of bedrooms and kitchens during the job.
HEPA Vacuuming Before Treatment
Antimicrobial spray only works on clean surfaces. We vacuum every exposed surface first, then treat, which is why our sanitizing actually holds up over time.
EPA-Registered Antimicrobials
We use Concrobium, Benefect and RMR-86 depending on the surface and the growth. Each is EPA-registered and chosen for the specific conditions in your attic.
When to Call for Attic Sanitization
Post-leak cleanup
You just had a roof leak repaired and the attic still smells musty two months later.
We inspect for residual moisture with a meter and thermal camera, remove any wet insulation, HEPA vacuum the framing, and sanitize all exposed wood with antimicrobial spray.
Outcome: The smell is gone, the attic is dry, and you have documented readings showing the repair worked.
Pre-closing job
A home inspector flagged attic mold a week before your closing date.
We prioritize real estate timelines, inspect the same day when possible, and complete sanitization with a written report and photos the buyer's agent can review.
Outcome: The buyer gets documentation, the lender gets proof, and the closing stays on schedule.
Allergy relief
Your family has been dealing with allergies or asthma that get worse upstairs.
We test air quality, inspect the attic for mold and rodent waste, then run containment, HEPA vacuuming and antimicrobial treatment. Ductwork gets checked too.
Outcome: Spore counts drop, the attic stops feeding triggers into bedrooms, and most customers notice a difference within 48 hours.
Rodent cleanup
You found rodent droppings and torn insulation while storing holiday boxes.
We remove contaminated insulation, HEPA vacuum the entire attic, sanitize all surfaces, and install fresh insulation rated for Colorado temperatures.
Outcome: The attic is clean, odor-free and safe to store in, with new insulation doing its job again.
Rental turnover
You are selling a rental property and the tenant complained about musty air.
We inspect, decontaminate, sanitize, and hand you a written report with before-and-after photos you can show the buyer or keep for your records.
Outcome: The unit passes inspection, the tenant stops complaining, and you have documentation for the sale.
How Attic Sanitization Runs in Littleton
Littleton sits at the edge of the foothills, which means big temperature swings between day and night, and that drives condensation onto attic sheathing. Add hail season roof leaks and freeze-thaw cycles in winter, and you get the pattern we see over and over: a small leak, wet insulation, then black mold on the decking by the next summer.
Older homes near Historic Downtown Littleton and Sterne Park often have undersized soffit venting, while newer builds in Sterling Ranch and TrailMark sometimes have ventilation sized for the wrong roof pitch. We adjust our scope for each. If you are looking for attic sanitization for mold prevention Littleton CO, the real fix is moisture control first, sanitizing second.
Arapahoe County homes built before 1978 also get EPA Lead-Safe handling if we disturb painted surfaces during the job.
- Ken Caryl: Two-story homes with vaulted ceilings often have attic spaces that are hard to ventilate, so condensation builds on the north-facing sheathing.
- Columbine: 1970s ranches with fiberglass insulation that traps moisture after roof leaks. We see sheathing mold here more than almost anywhere else.
- Sterling Ranch: Newer construction with tight building envelopes. Attic ventilation is sometimes undersized for the roof pitch, which traps humidity.
- Historic Downtown Littleton: Older homes with small attic hatches and limited venting. Access takes planning, and pre-1978 builds need EPA Lead-Safe practices.
- Roxborough Park: Foothills exposure means more wind-driven rain and hail damage. Roof leaks here often show up as sheathing mold months later.
- Freeze-thaw cycles in winter and spring: Condensation forms on cold sheathing overnight, then dries during the day. Repeated cycles feed slow mold growth that is easy to miss until it spreads.
We walk the attic and explain what we find We seal the hatch and set up containment We log final readings and hand you the report
From problem to finished result.
Ken Caryl Attic After a Roof Leak
Before: A roof leak two winters ago left wet fiberglass insulation and black mold across roughly 200 sq ft of roof sheathing. The attic smelled sour, and the upstairs bedrooms had a persistent musty odor that no amount of cleaning fixed.
After: We removed the wet insulation, HEPA vacuumed and treated the sheathing and trusses with antimicrobial spray, and installed new insulation. Moisture readings dropped from 24% to 11% on the affected decking. The odor cleared within 48 hours.
We recommended adding two soffit vents to improve airflow. The homeowner checks the attic once each spring after snowmelt and calls us if anything looks wet.
Columbine Ranch With Rodent Contamination
Before: Roughly 40% of the attic insulation was torn up and contaminated with rodent droppings. The homeowner found it while pulling down holiday boxes, and the smell was noticeable from the hallway below the attic hatch.
After: We removed all contaminated insulation, HEPA vacuumed every surface, sanitized the framing with Benefect, and installed fresh fiberglass insulation. The attic went from visibly soiled to clean and odor-free in one day.
We sealed two obvious entry points near the roof line and recommended a yearly attic check each fall before rodent season picks up.
Sterling Ranch Home With Allergy Complaints
Before: A family with two asthmatic kids had been dealing with worsening symptoms upstairs. Air testing showed elevated spore counts, and inspection found light mold growth on sheathing near an undersized ridge vent.
After: We sanitized all exposed wood surfaces, ran air scrubbing during the job, and re-tested afterward. Spore counts dropped by more than 70%. The family reported noticeably better sleep within the first week.
We upgraded the ridge venting to match the roof pitch. They schedule an air quality check every two years to confirm counts stay low.
Attic Problems We Solve for Littleton Homes
Most attic problems in Littleton trace back to moisture. Find the water source, remove what it ruined, sanitize the rest, and the problem stops repeating. Here is what we see most often.
- Musty odorsMusty odors drifting into upstairs bedroomsSleep suffers, guests notice, and the smell gets worse every humid month until the source is removed. We trace the odor to its source, usually microbial growth on sheathing or old rodent waste in the insulation. After removal, we sanitize all wood surfaces with an antimicrobial spray and verify with a hygrometer that the attic is dry.
- Sheathing moldBlack mold on roof sheathing after a leakSheathing mold spreads along the decking and can reach trusses within a season, turning a small repair into a structural problem. We repair the leak first, then HEPA vacuum the affected decking and treat it with antimicrobial. If the wood is still sound, we clean it rather than replace it, which keeps the repair cost down.
- Allergy flare-upsAllergy and asthma flare-ups indoorsSpores and rodent dander ride the HVAC ductwork into bedrooms, so the attic keeps feeding the problem no matter how much you clean downstairs. Attic sanitization for allergy relief Littleton focuses on containment, HEPA vacuuming and air scrubbing. We also check ductwork for mold so your HVAC is not redistributing what we just removed.
- Failed inspectionFailed home inspection over attic moldBuyers walk, lenders balk, and closings get pushed back weeks while everyone argues about who pays. We inspect, scope and sanitize fast, then hand you a written report with photos and moisture readings.
Why Littleton Homeowners Book Attic Sanitization
A dry, clean attic that stops feeding odors and allergens into your home.
Cleaner Indoor Air
Mold spores and rodent dander in the attic ride your HVAC ductwork straight into living space. After attic sanitization for allergy relief Littleton, most customers tell us the upstairs air smells neutral within 48 hours. We run an air scrubber with HEPA filtration during the entire job so we are not spreading spores into your house while we work.
Odors Gone at the Source
Musty attic smell is not a candle problem. It comes from microbial growth on wood sheathing and trusses, plus old rodent waste in the insulation. We remove the contaminated material, treat the framing with an antimicrobial spray, then verify with a hygrometer that the space is dry. Odor removal without sanitizing is just masking.
Stops Mold From Returning
Sanitizing kills surface growth, but the fix is moisture control. We check attic ventilation fans, soffit and ridge venting, and ductwork for leaks. If your intake is undersized for a 2,000 sq ft Littleton ranch, we tell you before we leave. That is the difference between a one-time cleanup and a recurring bill.
Protects Resale Value
Buyers and inspectors flag attic mold fast. A documented sanitization with before-and-after photos and moisture readings gives you paperwork to hand over during a real estate transaction. We have walked plenty of Littleton sellers through this the week before closing, and it keeps the deal moving.
What a written scope covers.
What a written scope covers and what shapes it. Prices are set by the business after the first look.
Included
- Full attic inspection
- Hatch sealing and containment
- HEPA vacuuming of surfaces
- Antimicrobial spray treatment
- Odor source removal
- Written report with photos
Depends on
- Attic square footage
- Amount of insulation removed
- Extent of mold growth
- Access and roof pitch
- Ductwork condition
- Ventilation adequacy
What you receive
Clear records you can keep and share.
Job report
Summary of work performed
Photo log
Before and after images
Moisture log
Readings from start to finish
Scope sheet
What was treated and where
Sanitizing vs. decontamination: what your attic actually needs
Sanitizing treats surfaces. Decontamination removes the source. Most Littleton attics with visible growth need both.
Light growth
Surface mold on dry wood with no wet insulation
- Dry wood confirmed
- No rodent waste
- Sanitize only
Moderate growth
Mold on sheathing with some wet insulation
- Partial insulation out
- HEPA vacuum needed
- Sanitize after removal
Heavy growth
Widespread mold, rodent waste, wet framing
- Full decontamination
- Remediation first
- Sanitize as final step
Surfaces and materials we treat
- Trusses
- Sheathing
- Top plates
- Ductwork
- Fiberglass
- Cellulose
- Vent fans
- Hatch frames
Service ZIP codes.
A list like this tells people straight away whether you cover their street. Not listed? Call and ask: it only takes a minute.
- 80128
- 80122
- 80123
- 80120
- 80160
- 80165
- 80166
Towns we serve.
Based in Littleton and covering the places around it. Pick one for local details.
- Downtown Littleton
- Historic Downtown Littleton
- Sterne Park
- Ketring Park
- Heritage
- Southbridge
- Meadowbrook
- SouthPark
- Littleton Village
- Littleton Commons
- TrailMark
- Coventry
What Littleton Customers Say
Frequently Asked Questions About Attic Sanitization
Price depends on square footage, how much contaminated insulation has to come out, and whether we find active mold that needs remediation first. We give you a flat written price after the inspection, so you are not guessing.
Sanitization treats surfaces with an antimicrobial spray after the attic is cleaned. Decontamination is the broader job: removing contaminated insulation, HEPA vacuuming every surface, running air scrubbers, and then sanitizing. Most Littleton attics with visible mold or rodent waste need decontamination, not just a spray-down. We tell you which one your attic actually needs after the inspection.
Most homes go five to seven years between sanitization jobs, or after any roof leak, hail event or rodent infestation. Littleton's freeze-thaw cycles and summer humidity swings push condensation onto sheathing, so if your attic has had a leak, treat it once the repair is done. Homes with chronic ventilation problems may need it every three to four years.
Yes. We use EPA-registered antimicrobials like Concrobium and Benefect, seal the attic hatch, and run negative air so nothing migrates into living space. Kids and pets stay out of the attic for the cure window, usually two to four hours. Once the space is dry and ventilated, it is back to normal use.
Related Attic Services
Other services from the same team.
- Attic Air Quality TestingWe pull air samples before and after remediation to confirm spore counts dropped. This is useful for allergy or asthma concerns and for real estate closings. Lab results come back in two to three business days.
- Attic Leak Detection and RepairA slow roof leak can feed mold for months before you see a stain. We use a moisture meter and thermal imaging camera to find the entry point, then repair flashing, boots or shingles. Fixing the leak first is non-negotiable.
- Attic Ductwork Mold RemovalMoldy ductwork pushes spores into every room. We HEPA vacuum the exterior, seal and replace affected flex runs, then sanitize. This is common in Littleton homes where a bath fan or dryer vent dumps into the attic.
Book Attic Sanitization Littleton CO This Week
Call (720) 953-3834 and we will schedule an inspection, walk your attic, and give you a flat written price before any work starts.
Contact PeakShield Attic Solutions
Call (720) 953-3834 or email us and we will schedule an attic inspection, usually within a day or two. We work Monday through Friday, 8am to 6pm, and we answer the phone ourselves. If you have a leak or storm damage, tell us and we will prioritize the call.