Serving Kerrville, TX and surrounding areas. (830) 488-9157
Gaps you cannot see are pulling hot outside air into your home and sending your cooled air out. We find them with a blower door test and seal them - attic, crawl space, and everywhere in between.
Air sealing in Kerrville means finding and closing every gap in your home's outer shell - around pipes, wires, light fixtures, attic hatches, and wall joints - so outside air stays out and conditioned air stays in, with most jobs completed in one to two days. It is not the same as insulation, though the two work well together: insulation slows heat transfer, while air sealing stops air movement entirely.
In Kerrville's climate, where the air conditioner runs hard from late April through October, every gap in your home's shell is actively working against you. The U.S. Department of Energy estimates that the average home loses 25 to 40 percent of its heating and cooling energy through air leaks - most of which are hidden in the attic floor, around recessed lights, and at the rim joist where walls meet the foundation. Air sealing is often the highest-return improvement a homeowner can make before adding more insulation. If you are also considering filling your walls, our wall insulation service covers that in detail, and pairing the two is the most effective combination. For homes where the attic is the primary concern, our dedicated attic air sealing service addresses that space specifically.
A free assessment and blower door test is the right starting point. The test takes about an hour, causes no damage to your home, and gives you a clear picture of exactly how leaky your home is - before we spend a dollar on materials.
If your cooling costs jump dramatically from May through September and your system runs almost without stopping, air leaks are a likely contributor. Kerrville summers are long and intense, and an air conditioner working against a leaky envelope will run far more than it should. If your bills feel out of proportion to the size of your home, that is a signal worth investigating before you blame the HVAC unit.
If one bedroom is always warmer than the rest of the house, or certain rooms never quite reach the temperature on the thermostat, air leaks are often the cause. Conditioned air is escaping before it can do its job, and hot outside air is filling the gap. This is especially common in older Kerrville homes where attic insulation has settled or shifted over the years.
If you are dusting constantly and surfaces get dirty again within days, or you notice a faint musty smell you cannot trace to a specific source, air is likely moving through your attic or crawl space and carrying particles with it. In Kerrville's Hill Country setting, cedar pollen and outdoor dust are persistent - a leaky home pulls them in continuously through gaps you cannot see.
If outdoor smoke from Hill Country wildfires or brush fires noticeably affects the air inside your home - you can smell it, your eyes water, or you notice a slight haze - your home has significant air leaks. A well-sealed home keeps that smoke outside where it belongs. If you have noticed this during dry-season fire events in Kerr County, air sealing should be near the top of your list.
Every air sealing job we do starts with a blower door test - a large fan mounted in your front doorway that depressurizes the house and pinpoints exactly where air is moving. This baseline measurement guides the entire project and gives you a number to compare against when we run the test again after sealing is complete. We work primarily in the attic, crawl space, and around interior penetrations - the areas that account for the vast majority of air loss in most homes. Using two-component spray foam for larger gaps and caulk for joints between stationary surfaces, we seal around pipes, wires, recessed light cans, attic bypass openings, and the rim joist. For pier-and-beam homes - which are common in older Kerrville neighborhoods - the crawl space rim joist is a critical location that should not be skipped. Our dedicated attic air sealing service is available as a standalone project for homeowners who want to focus on that space specifically.
Air sealing and insulation work best together. Adding insulation on top of a leaky attic floor is like putting a blanket over a screen door - the insulation slows heat transfer, but air still moves freely through the gaps underneath. We recommend sealing first, then insulating. For homeowners who want to address both at once, we can combine air sealing with our basement insulation or attic insulation work in a single project. The Building Performance Institute sets the training and testing standards for blower door testing and air sealing work, and contractors with BPI-certified technicians have been trained to do this work the right way.
Before-and-after air leakage measurement using a calibrated fan that tells you exactly how leaky your home is and confirms the sealing work made a measurable difference.
Closes the gaps around every pipe, wire, recessed light, and framing penetration in the attic floor - the single highest-impact location in most homes.
Seals the framing where your walls meet the foundation - a major air pathway in both slab and pier-and-beam homes that is often overlooked.
For pier-and-beam homes, closes the gaps in the crawl space that allow hot, humid air to move up into your living area through the floor.
Seals around electrical boxes, plumbing chases, and ductwork where conditioned air escapes through interior walls and ceilings.
Handles both air sealing and insulation installation in one project so you get the full benefit of a tighter, better-insulated home without two separate mobilizations.
Kerrville sits in the Texas Hill Country on the Edwards Plateau, where summer temperatures regularly top 95 degrees and the air conditioning runs almost continuously from late spring through early fall. A significant portion of the city's residential neighborhoods have homes built in the 1960s through 1990s - a period when air sealing was not a standard part of construction practice. These homes were built to let houses breathe naturally, which in practice means they leak air freely through the attic, walls, and foundation. Homeowners in Welfare and Kendalia face the same older housing stock and climate pressures - air sealing is one of the most cost-effective upgrades available to homeowners across the Hill Country.
Two local factors make air sealing particularly valuable in this area. First, many older Kerrville homes sit on pier-and-beam foundations rather than concrete slabs - a common choice given the area's rocky limestone terrain. Pier-and-beam homes have a crawl space underneath, which is a major pathway for hot, humid air to move up into the living area through gaps in the floor. Sealing the rim joist and crawl space penetrations is essential and should not be skipped. Second, Kerr County experiences periodic wildfire smoke events during dry stretches in spring and fall. A home with significant air leaks pulls smoky outdoor air in through every gap in the structure. After air sealing, the air that enters comes through your HVAC filter rather than through unfiltered cracks in the attic or crawl space - which matters a great deal during Hill Country fire seasons. The U.S. Environmental Protection Agency notes that controlling where fresh air enters a home - rather than letting it drift in through unfiltered gaps - is one of the most effective ways to improve indoor air quality.
When you reach out, we ask a few basic questions - the age of your home, whether it is slab or pier-and-beam, and what is prompting you to call. We reply within one business day and schedule an initial visit. Knowing whether you have a crawl space helps us come prepared with the right equipment.
On the first visit, we walk through your home and run a blower door test - a large fan that fits in your front door and measures how much air your home leaks. This takes about an hour and causes no damage. The results tell us exactly where to focus and give you a baseline number so you can see the measurable improvement after the work is done.
The crew works primarily in the attic, crawl space, and around interior penetrations - not in your living areas. They seal gaps around pipes, wires, light fixtures, and framing using foam and caulk. You can stay home during the process. The attic work is the most time-intensive part, and the foam materials have a brief odor that clears within a few hours with ventilation.
Once sealing is complete, we run the blower door test a second time and show you the before-and-after results in writing. A good job shows measurable improvement in the numbers. Before we leave, we walk you through what was sealed and flag any ventilation concerns - areas where the home may need added airflow now that it is tighter.
Free blower door test and estimate - no pressure, no obligation. We measure the problem before recommending any work, and reply within one business day.
(830) 488-9157We run a blower door test at the start and again when the work is finished. You get written before-and-after numbers showing the measurable improvement. If the results do not show meaningful progress, we keep working until they do. That is the only honest way to know the job was actually done.
Most air loss in Kerrville homes comes from the attic floor, the rim joist, and interior penetrations - not from windows and doors. We focus where the leaks actually are: attic bypasses, recessed lights, plumbing chases, and the crawl space on pier-and-beam homes. A surface-level job around windows and doors is easy but rarely moves the needle on your energy bills.
A large share of older Kerrville homes are on pier-and-beam foundations, which means the crawl space is a major air pathway that cannot be ignored. We know how to access and seal these spaces properly, including the rim joist work that is often skipped by contractors less familiar with this type of home construction.
We stay current on what KPUB and Texas state programs offer Kerrville homeowners for energy efficiency improvements. Before you finalize a project, we can tell you whether any rebates or incentive programs apply to your situation - so you are not leaving money on the table.
Every air sealing job starts with measurement and ends with measurement. We do not ask you to take our word for it - the before-and-after blower door numbers do the talking, and we put them in writing before we leave your property.
Insulates the walls and ceiling of your basement or conditioned lower level so the space stays comfortable and does not pull heat into the floors above.
Learn MoreFocuses specifically on the attic floor - sealing every pipe, wire, and framing penetration before adding or replacing attic insulation for maximum effect.
Learn MoreKerrville summers are too expensive to let air leaks keep running up your bill - schedule your free blower door test and estimate today.
