Building Envelope Systems FAQ
Whether you are a building professional or building owner, we hope you’ll find the information you need here. If you don’t see what you’re looking for, please contact us, using the link above.
What is a building envelope system?
A building envelope system is the physical separation between the interior and exterior of a building. Tyvek® weather barriers and related products, like sealants and flashing tape, are used to help create a building envelope system for homes and commercial buildings. Tyvek® can reduce air and water infiltration to help prevent drafts and water damage. But it is also vapor permeable, to allow water vapor to escape when it does get into walls. Advantages a building envelope can provide include protection against water damage, improved energy efficiency, increased comfort, and reduced building maintenance.
Is a weather barrier like Tyvek® WB still useful if I install insulation?
Yes. The installed R-value of insulation is only realized if the air within the wall cavity stays still and dry. An average 8-mph wind can easily penetrate cracks and crevices, even in new homes. You could be losing up to 30% of the performance of your insulation. DuPont™ Tyvek® weather barriers are designed to help block air from getting inside walls. Properly installed, they help keep drafts out and protect your insulation’s rated R-value.
In addition, Tyvek® weather barriers help keep bulk water out, to help protect insulation in walls of both residential and commercial buildings. At the same time, DuPont™ Tyvek® WB is made with unique material science, to allow moisture that does get into walls to escape as vapor. This combination can help prevent moisture-related problems, such as rot, corrosion, mold, and mildew.
Is DuPont™ Tyvek® a vapor barrier?
No, DuPont™ Tyvek® is not a vapor barrier. It is made with unique material science to keep air and bulk water out while allowing moisture vapor inside walls to escape.
Can I use a Tyvek® weather barrier in combination with a vapor barrier?
Using a Tyvek® weather barrier in combination with a vapor barrier depends on how the rest of the wall system is constructed, and the climate the building is in. If the majority of the year is spent heating the home, where the inside temperature is greater than the outside, it is generally good to use a vapor retarder behind the interior drywall. In hot, humid climates, vapor barriers should not be used.
Do Tyvek® weather barriers have an R-value?
No; however, properly installed Tyvek® weather barriers help protect against loss of R-value in insulation due to wind washing. Even at wind speeds of 5 mph, a wall without an air barrier retains less than 40% of its original installed R-values.
In addition, Tyvek® ThermaWrap™ and Tyvek® ThermaWrap™ R5.0 can actually help increase the R-value of insulation. ThermaWrapTM is a metallized, weather resistive, insulating, breathable membrane designed to reflect radiant heat back into the wall in winter, and back out in summer.
Can housewrap make a house too tight?
With more energy efficient construction, "build tight, ventilate right" is the best practice. Mechanical ventilation is more important with today’s sophisticated energy saving home features. However, blower door testing on homes wrapped with DuPont™ Tyvek® weather barrier show natural air exchange rates per hour that are well within acceptable guidelines per ASHRAE Standard 62.
How to Specify and Install Tyvek® Materials
Can DuPont™ Tyvek® WB be installed with foam insulation products?
Yes. DuPont™ Tyvek® is compatible, and can be installed with foam insulation products. For specific inquiries, please contact us.
Can you install Tyvek® WB with the lettering facing inwards or upside down?
Tyvek® HomeWrap®, Tyvek® StuccoWrap®, Tyvek® DrainWrap™ and Tyvek® CommercialWrap® are equally effective in both directions and the logo may be on the inside or outside. However, Tyvek® StuccoWrap® and Tyvek® DrainWrap™ have a specially engineered surface that should be placed with the grooves facing outwards in a vertical direction.
Can Tyvek® weather barrier be installed vertically, instead of horizontally (drop it down from the top)?
Although the vertical (drop it down from the top) installation method is not recommended, it is important to ensure that, if this method is used, the vertical seams overlap by at least 6 inches and are taped with DuPont™ Tyvek® Tape. This will provide the greatest level of air infiltration and bulk water holdout protection. Recommended installation instructions can be located on this website, or on the roll label affixed to the product.
Is there really an advantage to using DuPont™ Tyvek® Tape?
Yes. Taping the seams with Tyvek® Tape provides the best Tyvek®-to-Tyvek® adhesion, helping to provide optimal protection against air and bulk water penetration, and extra durability protection during the building’s construction phase.
How long should Tyvek® WB be exposed before it is covered with siding?
Tyvek® HomeWrap® and Tyvek® StuccoWrap®, Tyvek® DrainWrap™ and Tyvek® ThermaWrap™ should be covered within 120 days (4 months). Tyvek® CommercialWrap® should be covered within 270 days (9 months).
Is it necessary to remove old building paper, or even old Tyvek®, before applying a new layer of Tyvek®?
No, it is not critical to remove building paper and/or Tyvek® prior to installing a Tyvek® weather barrier However, it is necessary to carefully inspect for damaged areas that may not be clearly visible under building paper. Since building paper does not have the same breathability characteristics of Tyvek®, the wall may lose some of its ability to dissipate moisture to the outside if the paper is left on the wall.
If you suspect previously installed Tyvek® has been compromised – and for all other specific inquiries – please contact us.
Should Tyvek® weather barrier be placed over or under building sheathing?
DuPont™ Tyvek® weather barriers can be used either over or under sheathing. When Tyvek® is used under sheathing, it functions only as an air barrier, and does not protect the sheathing as a secondary weather barrier. Tyvek® has been used directly over studs where there is no sheathing, although use of sheathing is a highly recommended building practice.
Is Tyvek® WB necessary over foam board?
DuPont™ Tyvek® weather barriers add considerable protection against leaky seams in foam board, similar to the protection provided over wood sheathing. Foam boards alone, even interlocking foam boards, do not adequately stop air leakage due to wall movement from settling and thermal expansion and contraction.
Can a Tyvek® weather barrier be used under any primary façade?
Yes, DuPont™ Tyvek® WB can be used under any façade, including brick, stucco, vinyl, cedar siding, metal, and stone. Proper installation under each façade is essential to ensure Tyvek® provides the maximum level of air infiltration resistance and bulk water holdout.
Can Tyvek® be used on roofs? Under floors? On the interior?
No, these uses are not recommended. All Tyvek® products in Canada and the U.S. have been tested and approved as products to be installed behind exterior walls. However DuPont™ RoofLiner provides a high-quality roof underlayment choice.
Can I use Tyvek® HomeWrap® under stucco?
Tyvek® StuccoWrap® is recommended under stucco because it has been specially designed to work with both traditional and synthetic stucco applications. The engineered surface, with special grooves, is designed to assist in drainage of incidental moisture that may penetrate the primary cladding in synthetic stucco systems.
Tyvek® HomeWrap® will also provide weather barrier characteristics in an EIFS wall system, but its drainage properties will differ. Therefore, in synthetic EIFS stucco systems, Tyvek® HomeWrap® can be used as the secondary weather barrier, but in conjunction with an additional drainage medium (either matte or grooved foam) to achieve the desired drainage characteristics.
Can Tyvek® StuccoWrap®, Tyvek® DrainWrap® or Tyvek CommercialWrap® D be used under brick?
Yes. It is perfectly acceptable to use Tyvek® StuccoWrap®, Tyvek® DrainWrap® or Tyvek® CommercialWrap® D under brick. Whether using Tyvek® HomeWrap®, Tyvek® CommercialWrap®, Tyvek® StuccoWrap®, or Tyvek® CommercialWrap® D under brick, it is important to follow the brick manufacturer’s guidelines regarding the use of an air space between the brick veneer and sheathing. Typically, this space is 1-2 inches, and will act as a drainage plane if incidental moisture penetrates the brick, in addition to ventilating behind the cladding, which aids in drying of the wall assembly.
Can a Tyvek® weather barrier be used as flashing?
Tyvek® weather resistive barriers have not been tested or approved as a flashing material. However, DuPont has introduced the DuPont™ Flashing System, which provides comprehensive protection from water leaks. It is designed to help direct water to the building exterior, instead of trapping it inside the wall system and causing water damage.
Can sheathing board seams be taped?
Taping sheathing board or fan-fold seams creates a continuous vapor barrier, so moisture vapor would have nowhere to escape. Adhesion of tape to foam and wood would also be temporary, due to thermal expansion and contraction of the wall assembly. A more effective and efficient means of providing air infiltration resistance and bulk water holdout is to properly install Tyvek® weather barrier, using our best practice guidelines. Since Tyvek® tape is flexible, it will continue to provide protection to the sheathing when undergoing thermal expansion and contraction.
What type of fasteners are recommended when installing Tyvek® weather barrier?
Tyvek® WB can be installed using a variety of fasteners, depending on the application. To attach Tyvek® to wood, insulated sheathing board or exterior gypsum board, use nails with plastic washer heads, such as Tyvek® Wrap Caps. Or you may choose to use wide staples with a minimum 1-inch crown. For steel frame construction, use Tyvek® Wrap Cap Screws.
What are the recommended sealants for use with Tyvek® weather barriers?
DuPont recommends DuPont™ Residential Sealant for residential installations. For specific inquiries, please contact us.
Can Tyvek® WB be used under cedar siding?
Yes, Tyvek® DrainWrap™ can be used under cedar siding. It is recommended that the cedar siding be installed per manufacturer’s guidelines and recommendations by wood siding associations, such as the Western Red Cedar Lumber Association. This requires priming all surfaces, including the back and ends, before installing. Additionally, the use of furring strips will help promote drainage of any incidental water that may penetrate the cedar cladding.
How many rolls of Tyvek® WB are required for a typical two-story house?
For a typical two-story, 2500-square-foot house, the general rule of thumb is that two rolls of Tyvek® size 9’ x 150’ should be adequate to wrap the house. However, this estimate may vary slightly, depending on the house elevation.
Why Choose DuPont™ Tyvek® Weatherization Products?
What is the difference between a DuPont™ Tyvek® weather barrier and black paper?
Black paper, or building paper, cannot match the unique material science of DuPont™ Tyvek® WB. Unlike Tyvek®, building paper is not designed to block air flow, and can absorb water. Building paper tears more easily than Tyvek®, and can degrade over time when under continual exposure to water. Building papers are less permeable to moisture vapor transfer than Tyvek®, increasing the potential that moisture vapor trapped inside the wall could cause mold, mildew and rot.
What is the difference between DuPont™ Tyvek® weather barriers and other weather barriers?
Many other wraps are perforated, which means that in order for them to breathe, the manufacturer has punched holes in them, resulting in a reduction of air and water holdout effectiveness. DuPont™ Tyvek® WB is a non-perforated, nonwoven product with microscopic pores that are so small, air and bulk water have a difficult time passing through. But since Tyvek® is breathable, moisture vapor can easily escape from the wall.
Will duct tape work as well as Tyvek® Tape?
No. Duct tape is not designed to be used with Tyvek® sheet. Tyvek® Tape has been specifically designed to work with Tyvek® products, and should be used in all situations when sealing of the Tyvek® seams is necessary.
Does using a DuPont™ Tyvek® weather barrier help make buildings more energy efficient?
Tyvek® weather barriers can have a positive impact on energy efficiency by helping to control air and water intrusion in walls. Properly installed Tyvek® weather barriers help protect against loss of R-value in insulation due to wind washing. Even at wind speeds of 5 mph, a wall without an air barrier retains less than 40% of its original installed R-values.
In addition, Tyvek® weather barriers help keep bulk water out, to help protect insulation in walls of both residential and commercial buildings.
Can using a DuPont™ Tyvek® weather barrier help improve indoor air quality?
Tyvek® WB can improve indoor air quality by helping to reduce uncontrolled air leakage, which helps the HVAC system maintain comfortable temperatures; helping reduce the formation of mold by preventing bulk water intrusion into the wall system and allowing water vapor from inside the wall system to evaporate ; helping prevent external contaminants from entering the building.
What is the impact of the building envelope system on energy efficiency?
A 2005 National Institute of Standards and Technology study* indicates that a weather barrier, such as Tyvek® CommercialWrap®, can reduce building air leakage by as much as 85%, realizing up to a 40% savings in natural gas and up to a 25% savings in electricity, annually.
Overall, what makes DuPont™ Tyvek® weather barriers different from other products?
Four properties are critical to optimal weather barrier performance for increased energy efficiency: durability, air resistance, water resistance, and vapor permeability. Most products rate high in just one or two properties. Only Tyvek® products deliver performance across all four properties, to help create sustainable buildings that cost less to operate, are easier to maintain, and provide better comfort, year-round.
Tyvek® ThermaWrap™ R5.0 Questions
Why should I use Tyvek® ThermaWrap™ R5.0?
Because it is the only exterior insulation and weather resistant barrier (WRB) solution that is breathable and, as a result, will help reduce water accumulation in the wall that can lead to mold and water damage. In addition, it installs in a familiar and similar way as DuPont™ Tyvek® HomeWrap®.
What is Tyvek® ThermaWrap™ R5.0 made of?
The top sheet is DuPont™ Tyvek® HomeWrap® and the insulation blanket is comprised of a proprietary blend of polyester fibers and a minimum of 20% pre-consumer recycled polyolefin.
Is Tyvek® ThermaWrap™R5.0 job site waste recyclable?
Yes. Tyvek® ThermaWrap™ R5.0 is classified as Plastic Recycling Symbol 7 - miscellaneous. Examples of other materials that are Plastic Code 7 are DVDs, sunglasses, iPod cases, baking bags and ketchup bottles. Check with your local recycler for more information.
How is Tyvek® ThermaWrap™ R5.0 different from the current Tyvek® ThermaWrap™ product?
The top sheet is not the low emissivity reflective product currently known as Tyvek® ThermaWrap™. The current Tyvek® ThermaWrap™ name will be changed to Tyvek® ThermaWrap™ LE, where LE stands for low emissivity.
Why is DuPont rebranding the current Tyvek® ThermaWrap™ product?
This rebranding is intended to place emphasis on the low emissivity benefits of the product. Tyvek® ThermaWrap™ is now the DuPont umbrella brand for a portfolio of breathable building wraps that offer air and water protection, and thermal insulating benefit. The portfolio currently includes Tyvek® ThermaWrap™ R5.0 and Tyvek® ThermaWrap™ LE.
Is Tyvek® ThermaWrap™ R5.0 made in America?
When will Tyvek® ThermaWrap™ R5.0 be available?
Tyvek® ThermaWrap™ R5.0 is currently available east of the Mississippi in the United States. It will be available east of the Rockies in 1Q2014, in the rest of the United States by midsummer 2014, and in Canada late in 2014.
Where can I (or where will I be able to) buy Tyvek® ThermaWrap™ R5.0?
If you are a dealer, from your authorized distributor for Tyvek® weatherization products If you are a builder or contractor, from your local professional dealers where Tyvek® HomeWrap® is available today i.e. lumber dealer, building material dealer, specialty dealer, or roofing/siding dealer. Contact your local DuPont™ Tyvek® Specialist or visit the ThermaWrap™ R5.0 page for more information.
What are the dimensions of the product?
Tyvek® ThermaWrap™ R5.0 is 1 1/2" thick, 4' wide and 40' long. These dimensions do not include the 6” un-insulated flap at the start and bottom of each roll.
Does the product cause itching like other types of insulation?
No, it does not. The top sheet is DuPont™ Tyvek® HomeWrap® and the insulation blanket is comprised of polyester and polyolefin fibers.
Is there any special Personal Protective Apparel (PPE) needed to handle or install?
No, but DuPont recommends the use of gloves, safety glasses, safety shoes, and hard hats on any construction site. You should be sure to comply with OSHA requirements.
Are there any acoustical benefits of Tyvek® ThermaWrap™ R5.0?
Yes, Tyvek® ThermaWrap™ R5.0 has sound absorption benefits. Tyvek® ThermaWrap™ R5.0 has a Sound Transmission Class (STC) rating of 32, an Outdoor-Indoor Transmission Class (OITC) rating of 25, a Noise Reduction Coefficient (NRC) rating of 0.70, and a Sound Absorption Average (SAA) of 0.73 (based on ASTM E90 Sound Transmission Loss testing and ASTM C423 Sound Absorption Testing).
Can I store the product outside?
DuPont does not recommend the long-term storage of the product outside.
Can I stack cartons of Tyvek® ThermaWrap™ R5.0?
Yes, the palletized boxes of Tyvek® ThermaWrap™ R5.0 can be stacked up to three high on a flat surface.
Can Tyvek® ThermaWrap™ R5.0 get muddy or dirty?
DuPont recommends that the insulation blanket be kept clear of mud, dirt, and job site debris.
How long does Tyvek® ThermaWrap™ R5.0 take to recover its thickness once unrolled?
The product is compressed during shipment, but will return to its original thickness in 2-3 minutes.
What type of fastener should I use to attach the Tyvek® ThermaWrap™ R5.0 to the sheathing?
DuPont recommends DuPont™ Tyvek® Wrap Cap Staples or cap nails (minimum ¾" long).
Can I install over wet sheathing?
It is always preferable to have dry sheathing before installing the exterior cladding. Because Tyvek® ThermaWrap™ R5.0 is moisture vapor permeable and will allow the wall to dry to the outside, it is more forgiving than other exterior insulation products when covering wet or moist sheathing cannot be avoided.
Will insects or rodents nest in and/or damage the insulation blanket?
As is the case with any exterior insulation, proper installation will prevent infiltration/nesting and reduce the chances of damage and loss of R value. Care must be taken during installation to mitigate this risk. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
Will installers need to pad or bump out windows and doors when installing Tyvek® ThermaWrap™ R5.0?
Yes. By using 2x4 wood buck bump outs so the window or door is on the same plane as the Tyvek® ThermaWrap™ R5.0. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
How do I terminate Tyvek® ThermaWrap™ R5.0 at the bottom of the wall or at roof-wall interfaces?
Three options are available – two options use traditional job site materials and a third option uses an accessory product called StarterVent™. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
What is StarterVent™?
It is a rigid termination strip that can be used to terminate Tyvek® ThermaWrap™ R5.0 at the sill plate or at roof-wall interfaces. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
Where can I buy StarterVent™?
It is available for purchase at professional dealers where Tyvek® ThermaWrap™ R5.0 is available.
How much does StarterVent™ cost?
Pricing will vary across the country. Consult your local building materials dealer for pricing.
Will Tyvek® ThermaWrap™ R5.0 blow off the wall if I don’t put my cladding over it right away?
No, when installed properly using recommended fasteners, fastening pattern and tape; the product should not blow- off the wall under normal weather conditions. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
Will Tyvek® ThermaWrap™ R5.0 fall off the wall when wet?
No, when installed properly using recommended fasteners, fastening pattern and tape, any added weight from moisture will not result in the product falling off the wall. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
What happens to Tyvek® ThermaWrap™ R5.0 when it gets wet?
The materials that make up Tyvek® ThermaWrap™ R5.0 are hydrophobic and do not retain water. When it gets wet, it dries quickly and returns to its original thickness and R-value.
What are the recommended tools for cutting Tyvek® ThermaWrap™ R5.0?
We have identified five different tools that cut Tyvek® ThermaWrap™ R5.0 well: (1) A utility knife for cuts <6", (2) a standard carpet knife, (3) the FISKARS® 60mm Titanium Rotary Cutter, (4) the OLFA 60mm Deluxe Rotary Cutter, (5) Kai 7280 11" Professional Shears, and (6) the pneumatic high speed rotary cutter Maimin WrapShear™. If you are going to be installing large quantities of Tyvek® ThermaWrap™ R5.0, DuPont recommends the use of the Maimin WrapShear™. Otherwise, the Kai shears and carpet knife will suffice.
Other than the utility knife, where can I purchase these cutting tools?
A variety of standard carpet knives are available at building material retail stores. The FISKARS® 60mm Titanium and the OLFA 60mm Deluxe Rotary Cutter can be found at many fabric and craft stores – more information is available at www.fiskars.com or www.olfa.com. Kai 7280 11” Professional Shears can be found at many fabric and craft stores – more information is available at www.kaiscissors.com or by calling 1-800-481-4943.
The pneumatic high speed rotary cutter Maimin WrapShear™, manufactured specifically for cutting Tyvek® ThermaWrap™ R5.0, is available directly from Maiman by calling 1-800-243-4645.
Other than the utility knife, what do these cutting tools cost?
Pricing will vary across the country. Consult your local dealer/retailer for pricing.
Can I install Tyvek® ThermaWrap™ R5.0 around windows and doors?
Yes. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
Can I use DuPont™ Flashing Systems products with Tyvek® ThermaWrap™ R5.0?
Yes, all DuPont self-adhered flashing products and Tyvek® seam tape can be used in a familiar and similar fashion as with any Tyvek® WRB.
How do I repair damage to the Tyvek® ThermaWrap™ R5.0 top sheet?
In a similar and familiar way that you repair Tyvek® HomeWrap®. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
How do I repair damage to the Tyvek® ThermaWrap™ R5.0 insulation blanket?
DuPont has developed methods to repair damage to the insulation blanket. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
Once installed, how long can I leave Tyvek® ThermaWrap™ R5.0 exposed?
Product should be covered within 120-days of installation, the same as Tyvek® HomeWrap®.
What claddings can be installed over Tyvek® ThermaWrap™ R5.0?
Tyvek® ThermaWrap™ R5.0 can be installed behind most common claddings used in residential construction, except for cedar shakes/shingles and EIFS. However, stucco, manufactured stone veneer, wood lap siding, and fiber cement will require the installation of the DuPont™ Insulated Batten.
Won’t Tyvek ThermaWrap R5.0 compress when I install cladding over it, resulting in a loss of R-value?
When installed according to the installation instructions, there is a minimum amount of compression and when it is compressed, the effective R-value of the wall is still at least 5.0. Vinyl is installed using longer fasteners so that it can be hung and not compress the Tyvek ThermaWrap R5.0. For brick and natural stone, brick ties are fastened directly over Tyvek ThermaWrap R5.0 – although compressed where attached, the overall effective R-value of the wall will still be at least 5.0. For fiber cement and wood lap siding, the use of the DuPont Insulated Batten will insure that an R-value of 5.0 is attained.
What is a DuPont™ Insulated Batten?
The DuPont™ Insulated Batten is an accessory product that allows stucco, manufactured stone veneer, wood lap siding, and fiber cement claddings to be installed over the Tyvek® ThermaWrap™ R5.0 The primary purpose of the product is to maintain a consistent R5.0 continuous exterior insulation, offsetting any R value loss as the material is compressed under these specific cladding types.
When and where will DuPont™ Insulated Battens be available?
The DuPont™ Insulated Batten will be available in early 2014. It will be available for purchase at professional dealers where Tyvek® ThermaWrap™ R5.0 is available.
Can I use Tyvek® ThermaWrap™ R5.0 in commercial or multi-family construction?
At this time, DuPont will only support the use of Tyvek® ThermaWrap™ R5.0 in single family new residential construction. It is our intention to develop the technical details and support the use of Tyvek® ThermaWrap™ R5.0 in construction types other than single family new residential over the next 12 months. DuPont will announce when this work is completed and the product can be used in and supported by DuPont in other construction types.
What air and water performance levels are Tyvek® ThermaWrap™ R5.0 designed to meet?
The current Tyvek® ThermaWrap™ R5.0 installation guidelines are designed to meet performance requirements up to ASTM E1677 – 65 mph equivalent structural load and 15 mph equivalent wind-driven rain water infiltration. This is consistent with Tyvek® HomeWrap® performance levels.
Does Tyvek® ThermaWrap™ R5.0 lose R-value when it is compressed?
Yes, like all compressible insulation materials, Tyvek® ThermaWrap™ R5.0 loses R-value as it is compressed. When compressed completely to 0.25", its R-value is approximately 1.5. Care must be taken during installation to mitigate compression. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
How do I install electrical, plumbing, and HVAC details through Tyvek® ThermaWrap™ R5.0?
DuPont has created installation details specifically for penetrations. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
Can I install Tyvek® ThermaWrap™ R5.0 if I construct using open stud or advanced framing?
At this time, DuPont does not have installation instructions and has not conducted any testing for open stud framing.
Can I get my company’s logo printed on Tyvek® ThermaWrap™ R5.0?
No, not at this time.
Has Tyvek® ThermaWrap™ R5.0 been installed on any homes?
Yes, it has been installed on a number of homes in the United States in a variety of climates, multiple construction methods and under various claddings.
How much does Tyvek® ThermaWrap™ R5.0 cost?
Roll prices will vary across the country. Consult your local building materials dealer for pricing.
How much does Tyvek® ThermaWrap™ R5.0 cost to install?
Installation costs will vary across the country. Consult your local contractor for pricing.
How much does Tyvek® ThermaWrap™ R5.0 cost relative to other continuous exterior insulation materials?
The total installed cost of Tyvek® ThermaWrap™ R5.0 (material and labor) is approximately 15-20% higher than the total installed cost of a premium house wrap and 1" extruded polystyrene rigid foam board insulation (materials and labor). However, Tyvek® ThermaWrap™ R5.0 delivers a higher return on investment for the premium. Tyvek® ThermaWrap™ R5.0 offers builders a breathable continuous exterior insulation choice that can help reduce the risk of mold and water damage. Pricing will vary across the country. Consult your local building materials dealer for pricing.
Is Tyvek® ThermaWrap™ R5.0 covered by a warranty?
Yes, the warranty for Tyvek® ThermaWrap™ R5.0 is similar to the warranty for Tyvek® HomeWrap®.
Is Tyvek® ThermaWrap™ R5.0 combustible?
Yes, Tyvek® ThermaWrap™ R5.0 is combustible. Tyvek® ThermaWrap™ R5.0 is a Class A building material with a Flame Spread Index ≤ 25 and Smoke-Developed Index ≤ 450 (based upon ASTM E-84 Surface Burning Characteristics). Unlike some rigid foam products, Tyvek® ThermaWrap™ R5.0 achieves this performance without added fire retardant chemicals.
What else should I take into consideration when installing Tyvek® ThermaWrap™ R5.0?
Because you are adding thickness to the wall, before you begin construction, consider what changes you need to your foundation, brick ledge, window/door jamb extensions, and gable/eve extensions. Refer to the Tyvek® ThermaWrap™ R5.0 installation guide for more details.
Can I use Tyvek® ThermaWrap™ R5.0 in any other applications?
DuPont does not support or warranty Tyvek® ThermaWrap™ R5.0 in any application other than as described in installation guide.
Is Tyvek® ThermaWrap™ R5.0 part of Contractor Rewards?
Yes. Each roll is worth 130 points.
Has a code evaluation report been issued for Tyvek® ThermaWrap™ R5.0?
The code evaluation report for Tyvek® ThermaWrap™ R5.0 is pending. A final code evaluation report and number is anticipated in the first quarter of 2014.
Who do I contact with questions?
Contact your local DuPont™ Tyvek® Specialist or call 1-800-44-TYVEK.
Does Tyvek® ThermaWrap™ R5.0 product meet the continuous exterior insulation requirements?
Yes, Tyvek® ThermaWrap™ R5.0 meets the IBC, IRC and IECC requirements for exterior insulation. Tyvek® ThermaWrap™ R5.0 can be used to help you meet or exceed building codes and/or standards for continuous exterior insulation. For more information consult our Dealer Fact Sheet, K-27287.
What are the benefits of using Tyvek® ThermaWrap™ R5.0 versus rigid foam?
Tyvek® ThermaWrap™ R5.0 is the better continuous exterior insulation choice for a number of reasons, including (1) it will allow the wall to dry to the outside in case of a wetting event, (2) it allows for better water and air management details, (3) it is an integrated WRB and continuous exterior insulation on a roll, (4) it is a Class A material without the addition of any fire retardant chemicals, and (5) it is supported by the DuPont™ Tyvek® Specialist Network and the DuPont™ Building Knowledge Center.
Can I use Tyvek® ThermaWrap™ R5.0 when residing a building?
Not at this time. Tyvek® ThermaWrap™ R5.0 has only been tested in single family new construction. We expect to have testing and installation instructions for residing applications in 2014.
*NISTIR 7238 U.S. Department of Energy, June 2005, by S.J. Emmerich, T. McDowell, and W. Ains.