Residential · Keep Homes Warm And Dry Since 1954
Insulation from the roof line to the foundation.
Protecting your home from the elements requires high-performance products and systems. This page is for builders, dealers, wholesalers, and everyone else with an interest in building right.
above-grade walls · under-slab · full basement
Where to insulate:
Four places in a house where Styrofoam™ Brand Insulation does what nothing else can do. Click on a house to learn more.
01 · Above-grade walls
Continuous Exterior Insulation — Above Grade
Styrofoam on the outside of your framing is called “Continuous Insulation”. It covers the stud framing of your exterior walls on the outside preventing heat loss through the framing — known as “Thermal Shorts”. In certain circumstances, exterior Continuous Insulation can also constitute a fully sealed Weather Resistive Barrier!
02 · Under-slab
Beneath the concrete
Insulation under a slab has to do its insulating while carrying the slab, whatever sits on the slab, and the loads that rolled over it during construction. That is why compressive strength matters here.
- 3-part spec Styrofoam Under Slab — 3-part specification
- Install & details Styrofoam XPS — Installation guidance
03 · Basement walls
Buried, but still a critical component
On a basement wall, rigid insulation does two jobs: it insulates, and it protects against moisture infiltration. Cover the foundation wall with insulation that will survive the elements, keep water out, and keep your concrete warm in the winter.
- 3-part spec Styrofoam Below Grade Walls — 3-part specification
- Install & details Styrofoam XPS — Installation guidance
04 · Crawlspace
Insulate The walls, not the floors
A vented crawlspace is a hole in the thermal envelope, and insulating the floor above it mostly relocates the problem. Closing the crawlspace can keep your floors warm and can help prevent moisture infiltration under your home.
Long Story Short(er)
XPS vs EPS, below grade
Not all insulation is created equal — here are some facts about how different rigid insulation products perform differently — and why.
Two product families:
Extruded Polystyrene · DuPont’s
Styrofoam XPS
Extruded Polystyrene (XPS). An all-in-one solution for foundations, slabs, above grade exterior walls. One material family with sizes and edge treatments purpose-suited to your needs.
Styrofoam residential documents →Spray foam · DuPont
Froth-Pak
Two-component spray foam insulation kits for rim joists, penetrations, framing junctions, air-sealing, insulating, and more. The places where a crawlspace or an attic floor leak. Sized from small hand-held cans to larger refillable kits.
Froth-Pak documents →Start with these
Our most recently requested documents for residential construction
Styrofoam Residential Sheathing — Product data
3-part specStyrofoam Below Grade Walls — 3-part specification
3-part specStyrofoam Under Slab — 3-part specification
Install & detailsStyrofoam XPS — Installation guidance
TDSFroth-Pak Foam Insulation — Product data
Install & detailsFroth-Pak Kits — Installation guidance
TDSFroth-Pak Foam System — Product data
SDSStyrofoam XPS — Safety data sheet
Quick-reference guides
At a glance — physical properties of our frequently-purchased residential products
Most of the questions our customers get asked are answered within these data sheets. These include information on packaging sizes, thicknesses, compressive strengths, applications, restrictions, etc.. If it’s not answered in the data sheets, we’re easily available here.
Questions
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