01
Old insulation removal
Compressed, wet or rodent-contaminated insulation is vacuumed out and hauled away.
San Marcos, TX attic insulation
Attic insulation in San Marcos, TX.
San Marcos has historic homes, rentals near Texas State University and new neighborhoods across town. We remove old insulation and install new insulation to keep them all comfortable.
Owens Corning Certified Energy Expert®
7,000+ customers served
Free attic inspection
Insulation for San Marcos homes
Why San Marcos attics need attention.
As the Hays County seat and home of Texas State University, San Marcos has older homes near downtown, many rental properties and fast-growing new neighborhoods. Older homes and rentals often have insulation that has been neglected for years.
We inspect the attic, measure the insulation and check for air leaks, pests and contamination. Then we give you a written quote, whether you are a homeowner or managing a rental property.
- Free inspection with photos of your attic
- Clear written quote before any work starts
- Average attic customer saves 20% on energy bills
Warning signs
Signs your San Marcos home needs new attic insulation.
Hot upstairs rooms
Bedrooms and bonus rooms stay warm even with the AC running.
High summer bills
Your cooling costs keep climbing while the house never feels quite cool.
Visible joists
You can see the tops of the ceiling joists through the insulation.
Flat or uneven insulation
Insulation that is compressed, patchy or pushed aside no longer does its job.
Rodents or droppings
Tunnels, nests and droppings mean the insulation should be removed and replaced.
Water stains or odors
Wet or musty insulation loses its value and should be checked right away.
Attic insulation services in San Marcos
The full job, done in the right order.
02
Attic cleaning & sanitizing
Debris, droppings and dust are cleared and the attic is sanitized.
03
Air sealing
Gaps around top plates, pipes, wiring and fixtures are sealed.
04
New insulation installation
Blown-in insulation is installed to an even depth across the attic.
How it works
A clear process, from inspection to walkthrough.
Free attic inspection
We check insulation depth, damage, pests and air leaks, and show you photos of what we find.
Clear written quote
You get a quote that lists exactly what will be done, so you can decide with no pressure.
Removal, cleaning & sealing
Old insulation comes out, the attic is cleaned and sanitized, and air leaks are sealed.
New insulation & walkthrough
New insulation is installed evenly, and we walk you through the finished attic.
Google reviews
What our customers say.
Local energy facts
Insulation levels, rebates and tax credits in San Marcos.
Recommended R-value
Hays County is in IECC climate zone 2A. For zones 2 and 3, ENERGY STAR recommends R-49 for an uninsulated attic and R-38 when you already have 3 to 4 inches. We measure your current depth during the free visit.
Utility rebates
Rebates depend on your electric provider. The provider name is on your bill; check its efficiency page before you start, since programs and funding change during the year.
Federal tax credit
The federal Energy Efficient Home Improvement Credit (25C) does not apply to insulation placed in service after December 31, 2025, so don’t plan your budget around it.
Checked October 2026. Sources: ENERGY STAR R-value guide · IRS 25C FAQ
Questions
Attic insulation in San Marcos: FAQ
Do you work on rental properties?
Yes. We work with homeowners and landlords and can coordinate access with tenants.
Do you serve the areas around the San Marcos River?
Yes. We serve homes throughout San Marcos and the surrounding Hays County area.
Is the attic inspection really free?
Yes. We inspect the attic, show you photos of what we find and give you a written quote. There is no obligation to book.
Do you always remove the old insulation?
No. When the old insulation is contaminated, wet or badly compressed, we remove it, clean and sanitize the attic and seal air leaks first. If it is in good shape, we will tell you whether adding new insulation on top is enough.
Nearby areas
Attic insulation near San Marcos.
We also serve homes across the Austin area. See all service areas →
Free attic inspection in San Marcos
Find out what your attic needs.
Send the form or call us. We will set up a free inspection, show you photos of your attic and give you a clear written quote.
- No-obligation inspection and quote
- Owens Corning Certified Energy Expert®
- Serving San Marcos and the Austin area