Rigid Foam
Rigid foam board insulation, installed right.
Rigid foam handles thermal bridging, the heat that bleeds through studs and rafters. The crews we send install EPS, XPS, or polyiso continuous insulation on exterior walls, under flat or low-slope roofs, on the underside of slabs, and as a thermal break under siding. Detail work matters more than the boards.
What's included in this service?
- EPS, XPS, and polyiso board installation
- Continuous exterior insulation under siding
- Under-slab and slab-edge rigid foam
- Roof deck insulation for unvented assemblies
- Tape and seal seams for vapor and air control
- Furring strip layout for siding restoration
- Coordinate with siding, roofing, and concrete trades
When do you need this service?
- Siding redo, add continuous insulation in the same scope
- Low-slope roof rebuild
- Cold floors over slab in inland or East County homes
- Conditioned attic conversion with unvented roof deck
- Title 24 alteration that requires continuous insulation
What do homeowners ask about Rigid Foam?
EPS, XPS, or polyiso, which board?
EPS is cheapest and vapor-permeable; good for exterior walls and below grade. XPS has higher R per inch and resists moisture; common on roofs and under slabs. Polyiso has the highest R per inch but loses some R in cold weather, fine in San Diego where it rarely gets that cold. We pick based on assembly and budget.
Will adding rigid foam mess up my windows and doors?
It pushes the wall plane out. We extend window and door jambs with proper trim, flash to drainage planes, and detail water management. This is normal exterior-insulation work and we plan for it on the quote.
Can rigid foam go under my floor?
Yes. The crews we send install rigid foam on the underside of subfloor over crawl, or on top of slabs before a new finish floor. R-5 to R-10 under a slab makes a noticeable comfort difference inland.
Service area
Where do we offer Rigid Foam in San Diego County?
We provide rigid foam in every city and community in San Diego County. Pick your city for local climate notes and service specifics.
Central Rigid Foam in San Diego City of San Diego insulation work runs the full range of housing stock, from pre-1920 craftsman in South Park and Old Town to post-2010 builds in Pacific Highlands Ranch. Most older central neighborhoods have settled R-11 or R-19 attics and zero wall insulation, with inland heat in Sorrento Valley and Carmel Valley pushing the upgrade ROI hard.
North Coastal Rigid Foam in Oceanside Oceanside spans the full coastal-to-inland gradient, Fire Mountain hillside parcels, South O beach cottages, Rancho Del Oro master-plan tracts, and Ocean Hills retirement community all have different scope. Median home age around 45 years means most older stock is on settled underperforming insulation, and military family rental turnover drives steady landlord-driven work between tenants.
North Coastal Rigid Foam in Carlsbad Carlsbad spans coastal Village to inland La Costa and Bressi Ranch master-plan. Older Village beach bungalows have settled underperforming insulation, La Costa and Aviara HOA tracts mostly need ductwork and air-sealing work, and the affluent demographic supports premium spray foam and energy-modeling-driven scope on remodels.
North County Inland Rigid Foam in Escondido Escondido is the hottest city in the county outside Borrego Springs, 100-110 degree summer afternoons, winter freezes, and median home age around 40 years drive the strongest attic-upgrade ROI math in North County. SDG&E fire-zone designation across most of the hillside requires ember-resistant ventilation on every project.
East County Rigid Foam in El Cajon El Cajon is the heat capital of East County, 100-115 degree summer afternoons, original tract attics pushing 160 degrees, and median home age around 50 years drive the strongest attic-upgrade ROI math in the county. Hard water and working-class budget sensitivity make rebate paperwork and financing options critical on most projects.
South County Rigid Foam in Chula Vista Chula Vista is San Diego County's second-largest city, split sharply between older west-side stock (55-plus years old, original underperforming insulation) and newer east-side master-plan developments (Otay Ranch, EastLake, Rancho del Rey from 1995-2015). Different scope on each side, full upgrade west, ductwork and air-sealing tightening east.
Coastal Rigid Foam in La Jolla La Jolla coastal microclimate runs cool and damp year-round, with marine humidity that pushes through any open chase or top plate. Air-sealing matters more than raw R-value here, and premium spray foam is the working default on cliff-side estates.
Central Rigid Foam in Scripps Ranch Scripps Ranch older master-plan attics are reaching the point where SDG&E rate pressure plus rising summer temperatures make the R-19-to-R-49 upgrade pay back in three to five years. Class A fire-rated assemblies and ember-resistant venting are now standard after the 2003 Cedar Fire.
See rigid foam in all 67 cities
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Serving San Diego County
Need rigid foam in San Diego County?
Call for a free quote. Most work scheduled within the week.