(858) 808-6055
Batts

Batt insulation, installed without gaps.

Batts work great when they are installed right and terrible when they are not. We cut to fit around wires, plumbing, and outlets — no compressing, no gapping, no fluff jobs. Fiberglass for cost and most assemblies. Mineral wool for fire, sound, or moisture-prone spots.

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Mineral wool batts neatly installed in open wall framing of a San Diego home

What's included in this service?

  • Fiberglass batts for walls, ceilings, and floors
  • Mineral wool batts for fire, sound, and exterior assemblies
  • Cut-to-fit around wires, boxes, and pipes (no compressing)
  • Friction-fit or stapled per assembly type
  • Vapor and air control layer per Title 24
  • Faced vs unfaced product per location

When do you need this service?

  • New construction or addition with open framing
  • Garage conversion to ADU
  • Sound-reducing interior walls (mineral wool)
  • Low-cost retrofit when walls are already open
  • Replacement of damaged or settled existing batts

What do homeowners ask about Batts?

Is mineral wool worth the extra cost?

For sound walls, fire-rated assemblies, and exterior cavities prone to moisture — yes. For typical interior walls and ceilings, fiberglass is fine and saves about a third per square foot. We will tell you where each one earns its keep.

How do you handle wires and outlets?

We split the batt around wires and slit it to fit behind outlet boxes. Compressing a batt around a wire kills its R-value at the spot you most need it (right next to a hole in the wall).

Faced or unfaced?

Faced batts (kraft paper or foil) provide a vapor retarder. We use them in cold-side assemblies and where Title 24 calls for them. Unfaced for everything else — easier and faster to install.

Service area

Where do we offer Batts in San Diego County?

We provide batts in every city and community in San Diego County. Pick your city for local climate notes and service specifics.

Central Batts in San Diego Central San Diego sits between coastal humidity and inland heat. San Diego attics typically hold 1980s or older insulation that has settled to R-15 or worse. Going to R-49 cellulose plus air-sealing is the standard upgrade and pays back in 3–5 years on cooling.
North Coastal Batts in Oceanside Oceanside sees marine influence and a wide age range of housing — 1970s beach stock to new HOA builds. Older homes need a full top-up to R-49 plus air-sealing; newer ones are usually code-compliant and may only need spot work.
North Coastal Batts in Carlsbad Carlsbad sees marine influence and a wide age range of housing — 1970s beach stock to new HOA builds. Older homes need a full top-up to R-49 plus air-sealing; newer ones are usually code-compliant and may only need spot work.
North County Inland Batts in Escondido Escondido hits triple-digit summer afternoons with low humidity. Attics over R-49 with proper air-sealing typically drop cooling load 15–25 percent on the hottest days. We push to R-49 minimum and air-seal the chase penetrations first.
East County Batts in El Cajon El Cajon attics hit 150–160°F in summer and most original tract-home insulation has settled to R-15 or worse. R-49 blown-in cellulose plus air-sealing is the standard scope and one of the highest-return home upgrades in the county.
South County Batts in Chula Vista Chula Vista sits in a mixed zone — coastal-influenced west, inland-influenced east. Older homes usually need attic top-ups to R-38 or R-49; newer EastLake and Otay Ranch builds are code-compliant and may only need spot work or air-sealing.
See batts in all 48 cities
Batts in AlpineBatts in BonitaBatts in BonsallBatts in Borrego SpringsBatts in BoulevardBatts in CampoBatts in CarlsbadBatts in Chula VistaBatts in CoronadoBatts in Del MarBatts in DescansoBatts in DulzuraBatts in El CajonBatts in EncinitasBatts in EscondidoBatts in FallbrookBatts in GuatayBatts in Imperial BeachBatts in JacumbaBatts in JamulBatts in JulianBatts in La MesaBatts in LakesideBatts in Lemon GroveBatts in Mount LagunaBatts in National CityBatts in OceansideBatts in Palomar MountainBatts in Pine ValleyBatts in PotreroBatts in PowayBatts in RamonaBatts in RanchitaBatts in Rancho BernardoBatts in Rancho PeñasquitosBatts in Rancho Santa FeBatts in San DiegoBatts in San MarcosBatts in San YsidroBatts in Santa YsabelBatts in SanteeBatts in Shelter ValleyBatts in Solana BeachBatts in Spring ValleyBatts in TecateBatts in Valley CenterBatts in VistaBatts in Warner Springs
Keep reading

What should you know about Batts?

Buying guides

Mineral wool vs. fiberglass batts: when each one wins

Honest side-by-side comparison of mineral wool and fiberglass batt insulation. R-value, fire rating, sound performance, cost, and where each one earns its keep.

Real feedback

Homeowners who hired us for this

We had R-13 batts from 1979 that had settled to nothing. Crew air-sealed top plates first, then blew cellulose to R-49. Upstairs bedrooms feel different now — the AC actually keeps up on hot afternoons.

Melissa R. Attic Insulation · Carlsbad

Got three quotes. Thermal Pro was the only one who recommended air-sealing before insulation and pushed for the radiant barrier given the East County heat. Bill dropped 18 percent in the first August. Worth every dollar.

David K. Attic + Radiant Barrier · El Cajon

Our vaulted ceiling was the hottest room in the house. Closed-cell foam at the roof deck completely changed the room. Crew masked everything carefully, came back to check the cure, walked us through the reoccupancy timeline. Professional all the way.

Priya S. Spray Foam Cathedral Ceiling · Encinitas
Serving San Diego County

Need batts in San Diego County?

Call for a free quote. Most work scheduled within the week.

(858) 808-6055 Request a quote