DuPont™ Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation
Durable, High R-Value, Cavity Wall Insulation<br>U.S. HFC Regulation Compliant Formulation
DuPont™ Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation
Durable, High R-Value, Cavity Wall Insulation<br>U.S. HFC Regulation Compliant Formulation
<br><b>DuPont™ Styrofoam™ Brand Cavitymate™ Ultra Extruded Polystyrene (XPS) Insulation</b> is a moisture-resistant, durable and lightweight extruded polystyrene foam board specifically designed for use in wet cavity wall environments. Manufactured with a patented carbon black technology,<br><br><b>Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation</b> features an R-value of 5.6 per inch (RSI of 0.97 per 25 mm). Its closed cell structure provides advanced long-term thermal performance and moisture control.
Features & Benefits
Specifications
Standard Sizes
| Thickness | Width | Length | R-Value | Edge Treatment |
|---|---|---|---|---|
| 2.18 in. | 15.75 in. | 8 ft. | 12.2 | Square Edge |
| 2.18 in. | 16 in. | 8 ft. | 12.2 | Square Edge |
| 2.5 in. | 15.75 in. | 8 ft. | 14.0 | Square Edge |
| 2.5 in. | 16 in. | 8 ft. | 14.0 | Square Edge |
| 3 in. | 15.75 in. | 8 ft. | 16.8 | Square Edge |
| 3 in. | 16 in. | 8 ft. | 16.8 | Square Edge |
Note: Please be advised that additional sizes may be available. Availability of all sizes varies by region and is subject to change. For further information, please contact your local DuPont Sales Representative or call us at 1-866-338-7668.
Testing
<b>Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation</b> exhibits physical properties as indicated in the table below when tested as represented. Review all instructions and (Material) Safety Data Sheet ((M)SDS) before use. Please contact DuPont at 1-833-338-7668 when additional guidance is required for writing specifications that include this product.
| TEST METHOD | TEST TITLE | PROPERTY | RESULTS |
|---|---|---|---|
| FIRE | |||
| UL 723 | Test Method for Surface Burning Characteristics of Building Materials | Surface Burning Characteristics | Flame Spread ≤ 25 Smoke Developed ≤ 450 |
| THERMAL | |||
| ASTM C518 | Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus | Thermal Resistance per inch, @ 75°F mean temp.1 | 5.6 ft2 •h•°F/Btu, R-value, min. |
| ASTM D696 | Standard Test Method for Coefficient of Linear Thermal Expansion of Plastics Between −30°C and + 30°C with a Vitreous Silica Dilatometer | Coefficient of Linear Thermal Expansion | 3.5 x 10-5 in/in•°F |
| ASTM D2126 | Standard Test Method for Response of Rigid Cellular Plastics to Thermal and Humid Aging | Change in Dimensions | 2.0 % change, max. |
| STRENGTH | |||
| ASTM D1621 | Standard Test Method for Compressive Properties of Rigid Cellular Plastics | Compressive Strength2 | 25 psi, min. |
| ASTM C203 | Standard Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation | Flexural Strength | 50 psi, min. |
| WATER | |||
| ASTM C272 | Standard Test Method for Water Absorption of Core Materials for Sandwich Construction | Water Absorption | 0.1 % by volume, max. |
| ASTM E96 | Standard Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials | Water Vapor Permeance3 | 0.8 perm, max. |
1Values are consistent with the criteria of ASTM C578 and the requirements of the FTC R-value rule (16 CFR Part 460). R means resistance to heat flow. The higher the R-value, the greater the insulating power.
2Vertical compressive strength is measured at 10 percent deformation or at yield, whichever occurs first. Since Styrofoam™ Brand Extruded Polystyrene Foam Insulations are visco-elastic materials, adequate design safety factors should be used to prevent long-term creep and fatigue deformation.
3Based on 2.125” thickness.
FAQ
Is drywall necessary when installing DuPont™ Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation over steel studs in the Ultra Air Barrier Wall System?
No. In general, the use of gypsum drywall on the exterior side of the steel studs is not necessary for a successful application of Styrofoam™ Brand Ultra XPS Insulation in the Ultra Air Barrier Wall System.
However, there are some situations where this may not be true, especially where an hourly rated fire wall is required.
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
Why are the DuPont™ Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation boards adhered to the block wall in the 15 ¾ inch Ultra Air Barrier Wall System?
The DuPont™ Styrofoam™ Brand Cavitymate™ Ultra Extruded Polystyrene (XPS) Foam Insulation boards are adhered to the block wall with Great Stuff Pro™ Gaps & Cracks Insulating Foam Sealant to ensure that the assembly performs in the long term.
Insulation boards that are allowed to be loose in the cavity can be moved around by varying air pressure from wind gusts. Over time this movement might compromise the foam sealant between the boards resulting in a loss of the air barrier performance of the system. Adhering the insulation boards to the block wall prevents this from happening.
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
Does the gap in the DuPont™ Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation have to be completely filled with foam sealant in the Ultra Air Barrier Wall System?
No. But this depends on the thickness of the Cavitymate™ Ultra Insulation (which is 15 ¾ inches wide). If the insulation is just one inch thick, it would be hard NOT to fill the gap completely with Great Stuff Pro™ Polyurethane Foam Sealant. However, thicker insulationcan be well sealed with less than a full width of foam sealant in the insulation board joint gap. You only need enough Great Stuff Pro™ single component foam to bridge the gap.
In this example below, the gap is well sealed, but more foam sealant was used than necessary. Usually filling the gap 50% allows the Great Stuff Pro™ Gaps & Cracks Polyurethane Foam Sealant to expand and fill the rest of the gap without too much flash.
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
How long does it take before the DuPont™ Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation is fully adhered to the block wall in the Ultra Air Barrier Wall System?
Great Stuff Pro™ Polyurethane Foam Sealant does not have good initial tack so it does not immediately hold the 15¾ inch wide Cavitymate™ Ultra Insulation boards to the wall. The friction fit of the board between the wall ties does hold the board against the wall while the Great Stuff Pro™ single component foam cures. The curing of the Great Stuff Pro™ single component foam used as the adhesive for the insulation boards typically takes between 30 minutes and 90 minutes to achieve essentially full strength. This time period is determined by the ambient temperature and relative humidity.
When fully cured the insulation boards are very firmly held in place by the adhesive.
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
What is the Ultra Air Barrier Wall System?
The Ultra Air Barrier Wall System is a method to install 15¾ inches wide DuPont™ Styrofoam™ Brand Cavitymate™ Ultra Extruded Polystyrene XPS Insulation boards OR 48 inch wide DuPont™ Styrofoam™ Brand Cavitymate™ Plus Extruded Polystyrene XPS Insulation boards in a manner that achieves both water and air barrier properties in addition to thermal insulation. These barrier properties are achieved by sealing the insulation board joints with either Great Stuff Pro™ single component insulating foam sealant or DuPont™ LiquidArmor™ Flashing and Sealant. The result is an inexpensive yet effective system that provides air, thermal, and water barrier properties to rain screen cavity wall systems.
There are two versions of the Ultra Air Barrier Wall System:
1) The standard Ultra Air Barrier Wall System using 15¾' DuPont™ Styrofoam™ Brand Cavitymate™ Ultra Extruded Polystyrene (XPS) Foam Insulation with joints sealed with Great Stuff Pro™ single component insulating foam sealant.
2) The 4'x8'DuPont™ Styrofoam™ Brand Ultra SL Extruded Polystyrene (XPS) Foam Insulation solution with joints sealed with DuPont™ LiquidArmor™ Flashing and Sealant.
Click for: Ultra Air Barrier Wall System
2) The 4'x8'DuPont™ Styrofoam™ Brand Ultra SL Extruded Polystyrene (XPS) Foam Insulation solution with joints sealed with DuPont™ LiquidArmor™ Flashing and Sealant.
Click for: Ultra Air Barrier Wall System
Why is the DuPont™ Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation used in the Ultra Air Barrier Wall System only 15 ¾ inch wide?
The 15¾ inch wide version of theDuPont™ Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation is used only in brick and block wall systems with eye and pintle brick ties. For this reason, the insulation board width is sized to fit in the 16-inch gap between the wall ties.
This isn't new, 16-inch wide products have been available for this application for decades. However, in the Ultra Air Barrier Wall System there needed to be a ¼ inch gap to hold the Great Stuff Pro™ single component foam that is applied after the boards are mounted to the wall. This foam sealant provides the air and water barrier properties for the assembly. This is why the insulation boards are only 15¾ inch wide.
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
This isn't new, 16-inch wide products have been available for this application for decades. However, in the Ultra Air Barrier Wall System there needed to be a ¼ inch gap to hold the Great Stuff Pro™ single component foam that is applied after the boards are mounted to the wall. This foam sealant provides the air and water barrier properties for the assembly. This is why the insulation boards are only 15¾ inch wide.
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
What are the ASTM C578 classifications for DuPont™ Styrofoam™ Brand Extruded Polystyrene (XPS) Insulation products? (FAQ-FLX-115)
The ASTM C578 classifications for DuPont™ Styrofoam™ Brand Extruded Polystyrene (XPS) Insulation products are as shown below:
| ASTM C578 Types | DuPont Products |
| Type X | Styrofoam™ Brand Residential Sheathing Styrofoam™ Brand Cavitymate™ Insulation Styrofoam™ Brand Panel Core 20 |
| Type IV | Styrofoam™ Brand Tongue and Groove Insulation Styrofoam™ Brand Square Edge XPS Insulation Styrofoam™ Brand Scoreboard XPS Insulation Styrofoam™ Brand Deckmate™ Plus XPS Insulation Styrofoam™ Brand Deckmate™ Plus FA XPS Insulation Styrofoam™ Brand Cavitymate™ Plus XPS Insulation Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation Styrofoam™ Brand Panel Core 30 Freezermate™ XPSInsulation Styrofoam™ Brand Ag BoardXPS Insulation |
| Type VI | Styrofoam™ Brand Highload 40 XPS Insulation Styrofoam™ Brand Panel Core 40 XPS Insulation Styrofoam™ Brand Roofmate™ XPS Insulation |
| Type VII | Styrofoam™ Brand Highload 60 XPS Insulation Styrofoam™ Brand Plazamate™ XPS Insulation |
| Type V | Styrofoam™ Brand Highload 100 XPS Insulation |
In what sizes does DuPont™ Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation come for the Ultra Air Barrier Wall System?
For 15.75 inch wide DuPont™ Styrofoam™ Brand Cavitymate™ Ultra XPS Insulation board:
For 48 inch wide Styrofoam™ Ultra SL insulation board:
For more information on the Ultra Air Barrier Wall System see:
Ultra Air Barrier Wall System
| Nominal Board Thickness (in) | R-Value |
| 1.75 | 10.0 |
| 2.18 | 12.0 |
| 2.5 | 14.0 |
| 3.0 | 16.8 |
| Nominal Board Thickness (in) | R-Value |
| 1.75 | 10.0 |
| 2.125 | 12.0 |
| 2.5 | 14.0 |
| 3.0 | 16.8 |