Installation Guide
Product Data Sheet
FOAMULAR
®
250
Extruded Polystyrene (XPS) Rigid Foam Insulation
Energy-Saving
1
, Moisture
Resistant XPS Insulation
ASTM C578 Type IV, 25 psi
minimum
Description
Owens Corning
™
FOAMULAR
®
250 Extruded Polystyrene
(XPS) Rigid Foam Insulation is
a closed cell, moisture-resistant
rigid foam board well suited
to meet the needs for a wide
variety of building applications.
FOAMULAR
®
250 Extruded
Polystyrene (XPS) Rigid Foam
Insulation is great for many
residential and commercial
construction applications such
as wall furring, perimeter/
foundation, cavity wall, pre-
cast concrete, under slab, crawl
spaces, sheathing and other
applications.
2
FOAMULAR
®
250
Extruded Polystyrene (XPS) Rigid
Foam Insulation is classied as
a Type IV product when tested
in accordance with ASTM C578
and provides a long-term thermal
performance of R-5 per inch.
Like all FOAMULAR
®
XPS
Insulation products, FOAMULAR
®
1 Savings vary. Find out why in the seller’s fact sheet
on R-values. Higher R-values mean greater insulating
power.
2 Not for use in roong. For roong applications,
use FOAMULAR
®
THERMAPINK
®
Extruded
Polystyrene (XPS) Rigid Foam Insulation.
250 Extruded Polystyrene (XPS)
Rigid Foam Insulation is made with
Owens Corning’s patented
Hydrovac
®
process technology
under strict quality control
measures, which makes it highly
resistant to moisture and permits
the product to retain its high
R-value year after year even after
exposure to moisture and freeze/
thaw cycling.
Key Features
• Excellent long-term stable
insulating performance at R-5
per inch
3
• Exceptional moisture resistance,
long-term durability
• Limited lifetime warranty
4
—
maintains 90% of R-value
and covers all ASTM C578
properties
• The only XPS foam to have
achieved GREENGUARD Gold
Certication
• The only XPS foam with
certied recycled content—
certied by SCS Global Services
to contain a minimum 20%
recycled content
• Will not corrode, rot or
support mold growth
• Zero ozone depletion potential
with 70% less global warming
potential than our previous
formula
• Reusable
• Lightweight, durable rigid foam
panels are easy to handle and
install
• Easy to saw, cut or score
3 R means the resistance to heat ow; the higher the
R-value, the greater the insulating power.
4 See actual warranty for complete details, limitations
and requirements.
• Versatile applications: sheathing,
foundation walls, masonry
cavity walls
1
• Not for use in roong. For
roong applications, use
FOAMULAR
®
THERMAPINK
®
Extruded Polystyrene (XPS)
Insulation.
Product type
• Minimum compressive strength
of 25 psi
• Wide selection of sizes and
thicknesses
• Available in straight, tongue and
groove, or scored square edge
• Compliant with building codes
and standards
Product Applications
High-performance FOAMULAR
®
250 Extruded Polystyrene (XPS)
Rigid Foam Insulation:
• Retards the transmission of
water vapor and moisture in
masonry walls
• Provides continuous insulation
over steel stud framing, in
insulated concrete sandwich
panel walls, in masonry unit
cavity walls, or when used
with non-penetrating, surface
mounted furring systems over
masonry or concrete walls
• Insulates and retains its
properties in below grade
perimeter and foundation
applications, or directly
beneath the concrete slab to
complement the insulating
sheathing envelope around the
building framing
• FOAMULAR
®
250 Extruded
Polystyrene (XPS) Rigid Foam
Insulation is great for below
grade applications. Extruded