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Serving Santa Rosa, CA and surrounding areas. (707) 867-4942
Insulation slows heat, but it cannot stop air from moving through gaps. Attic air sealing fills those gaps around light fixtures, pipes, and wall tops before insulation goes in - and for Santa Rosa homeowners, it also meaningfully reduces wildfire smoke infiltration during nearby fire events.
Attic air sealing means finding and plugging the gaps, cracks, and holes in your attic floor that let conditioned air escape and outside air sneak in. Think of it like weatherstripping, but for the invisible spaces around light fixtures, plumbing pipes, and wall tops that you would never notice from the living room. A contractor uses foam, caulk, or special blocking to close those pathways before adding or upgrading insulation on top.
Insulation slows heat from moving through solid surfaces, but it cannot stop air from flowing through gaps - and moving air carries heat much faster than conduction through a wall. Sealing first, then insulating, is the sequence that actually works. Skipping the sealing step is one of the most common reasons homeowners do not feel a difference after an insulation upgrade.
For Santa Rosa homeowners who experienced the Tubbs Fire or Kincade Fire, there is a second benefit: attic air sealing significantly slows smoke infiltration during nearby fire events by closing the same pathways smoke uses to enter a home. This works best when combined with a full air sealing services assessment that covers the whole building envelope.
If your heating or cooling runs for long stretches but the house still feels stuffy in summer or drafty in winter, air leakage is often the culprit. In Santa Rosa's climate, where summer afternoons can be 30 degrees hotter than the morning, an unsealed attic acts like a heat pump running in the wrong direction - pushing warm air down into your living space no matter how hard your AC works.
Recessed lights, ceiling fans, and smoke detectors that pass through the attic floor are common air leak points. Dust rings forming around those fixtures on your ceiling, or a faint draft you can feel near them, means air is moving through gaps that should be sealed. This is especially common in Santa Rosa homes built in the 1960s and 70s, when recessed lighting was popular but air sealing was not.
If your energy bills have been rising year over year without changes in your habits, an unsealed attic is one of the first places to look. Santa Rosa's variable climate means your HVAC is working hard across multiple seasons, and every gap in the attic floor is a place where that work is being undone.
If your house took on a smoke odor during the Kincade Fire, the Glass Fire, or any of the other fire events that have affected Sonoma County, that is a direct sign that outside air - including smoke - is finding its way in through gaps in your building envelope. The attic is one of the most common entry points. Sealing those gaps significantly slows smoke infiltration during the next fire event.
We ask your home's age, whether you have had any energy work done before, and what is prompting the call. Most Santa Rosa contractors can schedule an initial visit within a few days to a week.
A technician inspects your attic, identifies visible gaps, and often runs a blower door test to measure how leaky the house is overall. You get a clear explanation of what was found and a written estimate before any work is scheduled.
The crew works through the attic systematically, sealing gaps around every pipe, wire, light fixture, and wall top using foam, caulk, or rigid blocking depending on the size of the gap. This typically takes one full day for a standard Santa Rosa home. It is not loud, and you can go about your normal routine.
Once sealing is complete, insulation is added or restored on top. Before we pack up, we walk you through the work - a good contractor will show you what was sealed and where before it gets covered. You receive a written summary useful for rebate applications.
Free on-site assessment. We walk you through the attic and show you what we found before recommending any work.
(707) 867-4942Free assessment, written estimate, no obligation. We respond within one business day.