Walls

Wall insulation that works in real homes.

Wall insulation depends on whether the framing is open. Open studs get batts, mineral wool, or sprayed foam. Closed walls get drilled and dense-packed with cellulose, or injected with low-pressure foam. We pick the method that fits your stucco, drywall, and budget.

(858) 808-6055 Request a quote

Worker installing fiberglass batts into open wall studs of a San Diego home

What's included in this service?

Inspect wall assembly: stud size, sheathing, finish material
Recommend method: batt, dense-pack, or sprayed foam
Drill and dense-pack from interior or exterior on closed walls
Install batts or mineral wool in open framing
Vapor and air control layers per assembly type
Patch, texture, and paint-prep drill holes
Coordinate with stucco or drywall trades for restoration

When do you need this service?

Pre-1980 home with little or no wall insulation
Stucco re-do that exposes wall sheathing
New addition with open framing
Sound issues between rooms or shared walls
Cold or hot exterior wall surfaces

What do homeowners ask about Walls?

Can you insulate a wall without removing drywall?

Yes. Dense-pack cellulose or injection foam goes through small drilled holes — usually two per stud bay from the interior or exterior. We patch the holes and leave the wall paint-ready.

Does it really make a difference if my house is already drywalled?

In a 1960s home with empty walls, going to dense-pack R-13 cuts wall heat loss roughly in half. The bigger payoff in San Diego is usually attic + air-seal first, then walls. We will tell you the order that gives you the most return per dollar.

What about the corners and headers — are they covered?

Dense-pack reaches them. Our crew uses fill tubes long enough to push into the bottom of each cavity and pulls back as the bay fills. We monitor density at the hose. Headers over windows get separate fills.

Service area

Where do we offer Walls in San Diego County?

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

Central Walls 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 Walls 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 Walls 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 Walls 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 Walls 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 Walls 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 walls in all 48 cities

Walls in Alpine Walls in Bonita Walls in Bonsall Walls in Borrego Springs Walls in Boulevard Walls in Campo Walls in Carlsbad Walls in Chula Vista Walls in Coronado Walls in Del Mar Walls in Descanso Walls in Dulzura Walls in El Cajon Walls in Encinitas Walls in Escondido Walls in Fallbrook Walls in Guatay Walls in Imperial Beach Walls in Jacumba Walls in Jamul Walls in Julian Walls in La Mesa Walls in Lakeside Walls in Lemon Grove Walls in Mount Laguna Walls in National City Walls in Oceanside Walls in Palomar Mountain Walls in Pine Valley Walls in Potrero Walls in Poway Walls in Ramona Walls in Ranchita Walls in Rancho Bernardo Walls in Rancho Peñasquitos Walls in Rancho Santa Fe Walls in San Diego Walls in San Marcos Walls in San Ysidro Walls in Santa Ysabel Walls in Santee Walls in Shelter Valley Walls in Solana Beach Walls in Spring Valley Walls in Tecate Walls in Valley Center Walls in Vista Walls in Warner Springs

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 walls in San Diego County?

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