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Attic Insulation, Rodent Proofing & Attic Cleaning in San Marcos, CA

San Marcos has a little bit of everything — older homes, new construction, canyons, and hillsides. From Discovery Hills and Twin Oaks Valley to San Elijo Hills and the neighborhoods around Cal State San Marcos, many homes still have original insulation, active rodent pathways, and leaky ducts that make rooms hot, drafty, and expensive to cool. Attic Shield helps San Marcos homeowners restore and upgrade their attics with attic cleaning, insulation removal, rodent proofing, rodent waste removal, attic sanitization, attic air sealing, insulation installation, and duct repair & replacement.

Attic Problems We See in San Marcos Homes

San Marcos gets hot inland sun during the day and cooler evenings at night. That temperature swing, combined with older construction and long duct runs to upstairs rooms, creates a specific set of attic problems. In San Marcos attics we commonly find:

• Old or builder-grade insulation that’s thin, patchy, or contaminated
• Rodent nests, droppings, and tunnels throughout insulation and along framing
• Unsealed wall tops, can lights, and mechanical chases leaking conditioned air
• Duct systems that are kinked, undersized, leaking, or poorly insulated
• Very hot attic temperatures pushing heat down into bedrooms, lofts, and offices

These issues lead to hot upstairs rooms, dusty attic odors, noisy HVAC cycles, and high SDG&E bills. Attic Shield focuses on the entire attic system — insulation, rodents, air leaks, and ducts — not just one piece.

Attic Shield Services for San Marcos Homeowners

Attic Cleaning & Light Debris Removal

If your San Marcos attic is mostly intact but dusty, cluttered, or lightly contaminated, Attic Shield can perform professional attic cleaning. We remove loose debris, accessible droppings, and surface dust so the space above your ceilings is cleaner and ready for rodent proofing, air sealing, and new insulation if needed.

Insulation Removal (Old, Damaged, or Contaminated Material)

Many San Marcos homes — especially older properties and early tract developments — still have batt or blown-in insulation from decades ago. It’s often flattened, dirty, or tunneled through by rodents. We remove old insulation using controlled, contained methods so dust and fibers don’t spread into your home, giving us a clean base for sanitization, air sealing, and new insulation installation.

Rodent Proofing for San Marcos Rooflines & Eaves

Trees, canyons, and fencing give rodents easy access to San Marcos rooflines. Once inside the attic, they tunnel through insulation, chew materials, and nest near ducts and wiring. We inspect eaves, vents, roof intersections, stucco gaps, and penetrations, then seal accessible entry points using rodent-resistant materials for long-term exclusion, not just a quick trap-and-go solution.

Rodent Waste Removal & Sanitization

Rodent droppings, urine, and nesting materials create strong odors and unhealthy attic conditions. Attic Shield removes heavily contaminated material and applies sanitizing products to exposed surfaces to help reduce odor and bacteria in the attic space above your living areas.

Full Attic Sanitization (Severe or Long-Term Activity)

When San Marcos attics have long-term or severe rodent infestations, we recommend full attic sanitization. This deeper treatment targets framing, sheathing, and other surfaces to help neutralize contamination before we rebuild the attic with air sealing and new insulation.

Attic Air Sealing (Stop Energy Loss & Hot Spots)

Gaps at the top of walls, around recessed lights, and at plumbing or wiring penetrations allow conditioned air to escape into the attic while pulling hot attic air back into the home. We seal these bypasses so your San Marcos home holds temperature better and your HVAC system doesn’t have to run as long or as hard, especially on hot afternoons.

New Attic Insulation Installation (R-38+ for San Marcos)

After cleaning, sanitization, rodent proofing, and air sealing, we install new insulation that meets or exceeds California Title 24 requirements. In San Marcos, we typically bring attics up to R-38 or higher to help bedrooms, hallways, and main living areas stay more comfortable during warm inland days and cooler nights.

Duct Repair & Replacement in San Marcos Attics

Many San Marcos homes have long duct runs to reach upstairs rooms, lofts, and bonus spaces. Any kink, leak, or poor insulation in those ducts can drastically reduce airflow. We repair or replace accessible duct runs, seal joints, and ensure ducts are properly insulated so more of your cooled or heated air reaches the rooms where you actually need it instead of being lost in the attic.

Our San Marcos Attic Restoration Process

Every project in San Marcos starts with a detailed attic inspection and full photo documentation. We show you exactly what we see — insulation levels, rodent evidence, air leaks, and duct issues — and then design a scope of work around your home and budget. A complete attic restoration usually follows this sequence:

1. Protect floors, stairs, and attic access with coverings.
2. Remove old, damaged, or contaminated insulation where necessary.
3. Perform rodent waste removal and apply sanitization products.
4. Seal rodent entry points along rooflines, eaves, vents, and penetrations.
5. Air seal major gaps between your living space and the attic.
6. Install new attic insulation to the proper R-value for the inland climate.
7. Repair or replace accessible ductwork if included in your scope.
8. Provide after-photos so you can see the finished condition of your attic.

Benefits of Upgrading Your San Marcos Attic with Attic Shield

• Cooler upstairs bedrooms, lofts, and home offices
• More even temperatures between rooms and floors
• Reduced strain on your air conditioner and furnace
• Less dust, odor, and contamination coming from the attic
• Long-term rodent prevention with real exclusion and sealing
• Insulation levels that match modern California energy standards

FAQ – Attic Services in San Marcos

Do you offer free attic inspections in San Marcos?

Yes. Attic Shield provides free attic inspections for San Marcos homeowners, including photos and a clear written estimate so you know exactly what’s happening before you approve any work.

How long does a San Marcos attic project usually take?

Most full projects — insulation removal, sanitization, rodent proofing, air sealing, and new insulation — are completed in about 1–2 days, depending on attic size, access, and whether duct work is included.

Will this help with hot rooms and high energy bills in San Marcos?

In many San Marcos homes, yes. Proper insulation, sealed air leaks, rodent exclusion, and duct repairs often make a noticeable difference in comfort and can help reduce wasted energy, especially during the hottest months.

Do you protect my home while working in the attic?

Absolutely. Our technicians protect floors, hallways, and access areas with coverings, keep debris contained, and clean up thoroughly when the job is finished. The goal is a dramatically improved attic with your home left as clean as we found it.

Schedule Your San Marcos Attic Inspection

If you live in San Marcos and are dealing with hot rooms, rodent activity, old insulation, or rising energy bills, Attic Shield is ready to help with a clean, step-by-step attic solution tailored to your home.