The Original RhinoRoof® U20


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RhinoRoof U20

Air, water and vapor barrier for use under Asphalt Shingles, Synthetic Shingles, Residential Metal Roofing and Cedar Shakes

Air, water and vapor barrier for use under Asphalt Shingles, Synthetic Shingles, Residential Metal Roofing and Cedar Shakes

break free from felt

U20 Features & Benefits

  • Meets ASTM D4869 & D226 Types I & II
  • Fiber grip slip-resistant walking surface
  • Enhanced UV - 60 days exposure
  • 12 x stronger than #30 felt
  • 8 squares more per roll compared to #30 felt
  • 17% more coverage per lap (42” width as compared to 36” for felt)
  • Ease of installation – wider, lighter, more coverage per lap
  • Synthetic construction inert to mold growth
  • Lays flat and does not absorb water and wrinkle
  • No oil leaching - no hazardous material content
  • Class A Fire - ASTM E108 (as part of a system)
  • Contributes to LEED® points
  • Texas Department of Insurance
  • Advanced backside non-slip coating
  • Low temperature flexibility
  • Dual logo custom printing available

More reasons to choose RhinoRoof U20


Say goodbye to traditional asphalt saturated felt paper - Break free from felt™ with RhinoRoof® U20 synthetic roofing underlayment!

RhinoRoof U20 is a highly engineered, mechanically attached, coated woven synthetic roofing underlayment for sloped roofs. RhinoRoof's durable and high strength design along with its fiber grip walking surface provides a considerable improvement over asphalt saturated felt. The fiber grip textured walking surface can also be chalked just like felt.

Gain an edge in productivity and profits; RhinoRoof’s light weight, 42” width and 286 ft run length allows for fewer laps, cuts, and easier roll handling compared to felt. This means you can do more jobs in less time, use less labor, and inventory fewer rolls.

Gone are the days of blow-offs and call backs! RhinoRoof U20 is 12 times stronger than #30 felt and therefore offers superior wind resistance and durability through heavy roof traffic and adverse weather conditions. Stay on track, take on more jobs and sleep assured your U20 projects will remain intact and dried-in. RhinoRoof U20 will save you time and money with less material damage and fewer post-install repairs.

Unlike traditional asphalt saturated felts, RhinoRoof U20 can be used in extremely low temperatures without becoming stiff and difficult to unroll. It also does not dry out, crack, or leach oils in the heat like felt. RhinoRoof U20 is 100% synthetic and will not absorb water and wrinkle like felt. It lays flat and will remain 100% impervious to mold.

RhinoRoof U20 can also be used in conjunction with RhinoRoof RSA or Titanium® PSU30 self-adhered underlayments for ice damming protection along the eaves and in the valley areas.

RhinoRoof U20 will continue to protect your long life primary roofing long after felt has turned to dust! Unlike felt, RhinoRoof U20 is also backed by a 20 year manufacturer’s limited warranty.

Break free from felt, choose RhinoRoof U20 synthetic roofing underlayment from InterWrap. end

Roofing Contractor Customer Loyalty Program


Get rewarded with a $100 gift card for every 90 rolls of RhinoRoof® underlayment purchased up to a maximum value of $3000! Terms & Conditions apply. Click here for details

Dual Logo Printing Available!

 dual logo

Turn your next roofing project into a massive billboard with a custom RhinoRoof dual logo print from InterWrap!
Click here for details

Installation Instructions

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RhinoRoof U20 is an air, water and vapor barrier and therefore must be installed above a properly ventilated space(s). Follow ALL building codes applicable to your geographical region and structure type as it is considered a vapor barrier.

DECK PREP: Protrusions from the deck area must be removed and decks shall have no voids, damaged or unsupported areas. Deck surface should be free of debris, dry and moisture free.

USE: RhinoRoof U20 must be covered by primary roofing within 60 days of application. U20 is designed for use under; asphalt or synthetic shingles, metal in residential applications, and cedar shakes that have been primed.

APPLICATION: For slopes from 2:12 and higher RhinoRoof U20 is to be laid out horizontally (parallel) to the eave with the printed side up. Horizontal laps should be 4“ and Vertical laps should be 6”and anchored approximately 1” in from the edge. For low slope applications it is recommended to overlap 50% plus 1”, for complete definition of low slope and guidelines consult authorities having jurisdiction. U20 product is not recommended for slopes less than 2:12. The use of roofing hammer, pneumatic air or gas driven fastener tools is acceptable. The use of straight edge cutting knives is recommended.

FASTENERS: For same day coverage with primary roofing RhinoRoof U20 can be anchored with corrosive resistant 3/8” head x 1“ leg roofing nails (ring shank preferred, smooth leg acceptable). The use of every other anchoring location printed on the product is also acceptable. If U20 will be left exposed for up to 60 days the product must be anchored with 1" plastic or metal cap smooth or ring shank roofing nails and anchored in all locations printed on the facer. DO NOT USE STAPLES: the use of staples to penetrate RhinoRoof U20 will void warranty.

ANCHORING: All anchoring nails must be flush, 90 degrees to the roof deck, and tight with the underlayment surface and the structural roof deck. Where seams and joints require sealant or adhesive use a low solvent plastic roofing cement meeting ASTM D-4586 Type 1, or Federal Spec SS-153 Type 1 such as Karnak, Henry, DAP, MB, Geocel or equivalent. Acceptable alternatives are butyl rubber, urethane, and EDPM based caulk or tape sealant.

EXTENDED EXPOSURE: If RhinoRoof U20 product will be exposed longer than 24 hours and up to 60 days then product must be attached to the structural roof deck using a minimum 1” diameter plastic or metal cap roofing nails (ring shank preferred but smooth leg acceptable). Miami Dade approved tin tags/metal caps are also acceptable, and it is recommended for best performance to use with the rough edge facing up. For extended exposure it is always recommended to anchor on every printed position on the facer. RhinoRoof U20 is not designed for indefinite outdoor exposure.

For extended exposure conditions where driving rain or strong winds are expected it is recommended to take additional precautions such as doubling the lap widths. Alternately or in addition to a compatible sealant could be used between the laps or a peel and stick tape could be applied to the overlaps.

Good safety practices should be followed on steep slope roofs, such as use of tie-offs, toe boards, ladders and/or safety ropes and personal body harnesses. Follow OSHA guidelines. Slip resistance may vary with surface conditions from debris that accumulates, weather, footwear and roof pitch. Failure to use proper safety gear can result in serious injury. Depending on roof pitch and surface conditions, blocking may be required to support materials on the roof and is good safety practice. Remember to seal the nail holes after removing blocking.

Instrucciones de instalación

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RhinoRoof® U20 es una barrera contra el aire, el agua y el vapor, por lo que debe instalarse sobre espacios con una ventilación adecuada. Siga TODAS las normas de construcción de su región geográfica para su tipo de estructura, puesto que se le considera una barrera contra el vapor.

PREPARACIÓN DE LA PLATAFORMA: Deben eliminarse las zonas salientes de la estructura del techo y esta no debe tener espacios vacíos ni áreas dañadas o sin apoyo. La superficie del techo debe estar seca y sin residuos ni humedad.

USO: RhinoRoof U20 debe cubrirse con el techado principal dentro de los 60 días posteriores a la aplicación. U20 está diseñado para utilizarse bajo tejas sintéticas o de asfalto, techados residenciales de metal y tejados de cedro.

APLICACIÓN: El RhinoRoof U20 debe instalarse de forma horizontal (paralela) al alero en techos con pendientes de 2:12 ó más, con el lado impreso hacia arriba. Los superposiciones horizontales deben ser de 4 pulg. (10.2 cm) y las verticales deben ser de 6 pulg. (15.2 cm) y deben estar ancladas a aproximadamente a 1 pulg. (2.5 cm) del borde. Con respecto a la aplicación en pendientes bajas, se recomienda sobreponer el 50% más 1 pulg. (2.5 cm); para conocer la definición de una pendiente baja y las directrices correspondientes, por favor consulte con las autoridades de su jurisdicción. El producto U20 no se recomienda en pendientes menores a 2:12. Pueden utilizarse martillos para techo, martillos tipo hacha y herramientas neumáticas de fijación de aire o gas. Se recomienda el uso de cortadores de borde recto.

FIJACIONES: Para cubrir el mismo día con techado primario, el U20 puede sujetarse con clavos para techo con cabeza de 3/8 de pulg. (9.5 mm) y 1 pulg. (2.5 cm) de largo que sean resistentes a la corrosión (es preferible usar clavos de cuerpo anillado, aunque los de vástago liso son aceptables). También es aceptable utilizar cualquier otro sitio para el anclaje que esté impreso en el producto. NO UTILIZAR GRAPAS: el uso de grapas para penetrar el U20 anulará la garantía.

ANCLAJE: Todos los clavos de anclaje deben estar al ras, a 90 grados con respecto a la plataforma del techo y ajustados a la superficie de recubrimiento y la estructura de la plataforma del techo. En los casos en que las uniones y juntas requieran de material sellador o adhesivo, se debe utilizar cemento plástico para techos con bajo contenido de solvente y que cumpla con las normas ASTM D-4586 Tipo 1 ó la Especificación Federal SS-153 Tipo 1, por ejemplo Karnak, Henry, DAP, MB, Geocel o equivalente. Otras alternativas aceptables son los selladores en forma de cinta o masilla con base de caucho butílico, uretano o EDPM.

EXPOSICIÓN PROLONGADA: Si el producto RhinoRoof U20 va a estar expuesto por más de 24 horas y por un máximo de 60 días, el producto debe fijarse en la estructura del techo utilizando clavos para techo con cabeza de metal o plástico de un mínimo de 1 pulg. (2.5 cm) de diámetro (se prefieren los clavos de cuerpo anillado, aunque los de vástago liso son aceptables). También es aceptable utilizar placas de estaño o topes metal que estén aprobados en Miami Dade; se recomienda instalarlos con el borde rugoso hacia arriba para un mejor rendimiento. Para una exposición extendida, se recomienda anclar todas las posiciones marcadas en el revestimiento. RhinoRoof U20 no está diseñado para estar expuesto indefinidamente a la intemperie. En condiciones de exposición prolongada, donde se espera lluvia impulsada por el viento o ventarrones, se recomienda tomar precauciones adicionales como doblar el ancho de las superposiciones. De forma alternativa o adicional, podría utilizarse un sellador compatible entre las superposiciones, o bien, utilizar cinta adhesiva en las superposiciones.

ADVERTENCIA – LEA LAS SIGUIENTES BUENAS PRÁCTICAS DE SEGURIDAD : En techos muy inclinados, se deben seguir las buenas prácticas de seguridad, como el uso de amarres, topes para apoyar los pies, escaleras y/o cuerdas de seguridad y arneses personales para el cuerpo. Siga las directrices de la OSHA. La resistencia al deslizamiento puede variar según las condiciones de la superficie, los residuos que se acumulen, el clima, el tipo de calzado, y la inclinación del techo. La falta de uso de equipos de seguridad adecuados puede dar lugar a lesiones graves. Según la inclinación y las condiciones de la superficie del techo, es posible que deba utilizarse algún mecanismo de bloqueo para apoyar los materiales sobre el techo, lo que constituye también una buena medida de seguridad. Recuerde que se deben sellar los orificios de los clavos después de quitar el mecanismo de bloqueo.

Consignes d'installation

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RhinoRoof MD U20 est une barrière contre l’air, l’eau et la vapeur et elle doit donc être installée au-dessus d’espaces bien ventilés. Respectez TOUS les codes du bâtiment applicables à la région et au type de structure, car elle est considérée comme un pare-vapeur.

PRÉPARATION DE LA PLATEFORME : Les saillies de la surface de la plateforme doivent être enlevées et la plateforme ne doit pas avoir d’espaces ni d’endroits endommagés ou non supportés. La surface de la plateforme doit être exempte de débris, sèche et à l’abri de l’humidité.

UTILISATION : RhinoRoof U20 doit être couvert par la couverture principale dans les 60 jours suivant sa pose. U20 est conçu pour être utilisé sous les bardeaux d’asphalte, les bardeaux synthétiques, les couvertures métalliques et les bardeaux de cèdre.

APPLICATION : Pour les pentes fortes de 2 h 12 ou plus, RhinoRoof U20 doit être disposé horizontalement (parallèlement) par rapport à l’avant-toit, la face imprimée vers le haut. Les chevauchements horizontaux doivent être de 4 po et les chevauchements verticaux doivent être de 6 po et ancrés à environ 1 po du bord. Pour les pentes douces, il est recommandé de faire chevaucher de 50 % plus 1 po; pour voir une définition complète du terme « pente douce » et les lignes directrices à cet égard, consulter les autorités compétentes de votre région. Le produit U20 n’est pas recommandé sur les pentes de moins de 2:12. L’emploi de marteaux à toiture ou de cloueuses pneumatiques ou à gaz est acceptable. On conseille d’utiliser des couteaux à lame droite.

FIXATIONS : Pour le revêtement le même jour avec la couverture principale, RhinoRoof U20 peut être fixé avec des clous à toiture de 1 po (tête de 3/8 po) résistants à la corrosion (l’utilisation de clous à tige annelée est à privilégier, mais l’emploi de clous à toiture à tige lisse est acceptable). L’utilisation de tout autre dispositif d’ancrage imprimé sur le produit est aussi acceptable. NE PAS UTILISER D’AGRAFES : l’utilisation d’agrafes pour installer RhinoRoof U20 annulera la garantie.

ANCRAGE : Tous les dispositifs d’ancrage doivent être affleurants, enfoncés à 90 degrés dans les panneaux de toit, et ne pas présenter de jeu avec la sous-couverture et les panneaux de structure du toit. Lorsque les joints requièrent un produit d’étanchéité ou un adhésif, utilisez de la colle plastique pour toitures à faible teneur en solvant et conforme à ASTM D-4586 Type 1, spécification fédérale SS-153 Type 1 comme Karnak, Henry, DAP, MB, Geocel ou l’équivalent. Des solutions de rechange acceptables comprennent : caoutchouc de butyle, uréthane et calfeutrant ou scellant en ruban à base d’EDPM.

EXPOSITION PROLONGÉE : Si le produit RhinoRoof U20 est exposé plus longtemps que 24 heures et jusqu’à 60 jours, le produit doit alors être fixé aux panneaux de structure du toit à l’aide de clous à toiture à capuchon en plastique ou en métal d’un diamètre minimal d’un pouce (l’utilisation de clous à tige annelée est à privilégier, mais l’emploi de clous à toiture à tige lisse est acceptable). Les pastilles métalliques approuvées par Miami Dade sont aussi acceptables, le bord rugueux face vers le haut pour des résultats optimaux. Dans le cas d’une exposition prolongée, il est toujours conseillé d’ancrer sur chaque position imprimée de la surface. RhinoRoof U20 n’est pas conçu pour une exposition extérieure prolongée. Dans le cas d’une exposition prolongée ou de la pluie battante ou des vents violents pourraient survenir, il est conseillé de prendre des précautions additionnelles, comme doubler la largeur des chevauchements. Comme solution de rechange ou comme précaution additionnelle, vous pouvez utiliser un produit d’étanchéité compatible entre les chevauchements ou les recouvrir de ruban adhésif.

MISE EN GARDE — LIRE LES CONSIGNES DE SÉCURITÉ CI-DESSOUS On doit adopter de bonnes pratiques de sécurité sur les toits à pente raide, par exemple se servir de cordes de fixation, de planches cale-pied, d’échelles ou de cordes de sécurité et de harnais de sécurité individuels. Suivre les lignes directrices de l’OSHA La résistance au glissement peut varier selon l’état de la surface, les débris qui y sont accumulés, les conditions atmosphériques, les chaussures utilisées et la pente du toit. Le défaut d’utiliser un équipement de sécurité approprié pourrait entraîner des blessures graves. Selon la pente de toit et l’état de la surface, un calage pourrait être requis pour soutenir les matériaux sur le toit, ce qui est une bonne pratique de sécurité. N’oubliez pas de sceller les trous des clous avant d’enlever le calage.

RhinoRoof U20 Technical Data

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RhinoRoof U20 Roll/Pallet Specs
LENGTH PER ROLL: 286’ / 87 m
WIDTH PER ROLL: 42” / 1.1 m
WEIGHT PER ROLL: 23.5 lbs / 10.6 kg
ROLL SIZE: 10 sq / 93 m²
PALLET WEIGHT: 1,626 lbs / 738 kg

This product is manufactured in accordance with national standards which allow for non-critical variances in weights and measures. Values are typical data and not limiting specifications. All values ± 10%

Test & Standard RhinoRoof U20 Typical Value #15 Felt Typical Value
Permeability ASTM E96 0.05 perms 5 perms
Water Transmission ASTM D4869 Pass Pass
Tear Strength ASTM D4533 MD 33 lbs (15 kg) | CD 24 lbs (11 kg) MD 2.2 lbs (1 kg) | CD 4 lbs (0.4 kg)
Tensile Strength ASTM D751 MD 88 lbs (40 kg) | CD 70 lbs (32 kg) MD 54 lbs (24.5 kg) |CD 29 lbs (13.2 kg)
Burst Strength ASTM D751 158 psi (1089 kPa) 35 psi (242 kPa)
Elongation ASTM D751 MD 20 % CD 20 % MD 3% CD 4%
Weight per Square ASTM D5261 2.25 lbs (1.02 kg) 11.2 lbs (5 kgs)
Thickness ASTM D1777 7 mils (0.18 mm) 21 mils (0.525 mm)
Service Range  -40°F to 240°F (-40°C to 115°C)

MD = Machine Direction CD = Cross Direction
Test data is based on an average taken over several production runs and should not be considered or interpreted as minimum or maximum values. Values are typical data and not limiting specifications. All values ± 10%.

RhinoRoof U20 Building Codes

  • Meets ASTM D4869 & D226 Types I & II
  • Class A Fire - ASTM E108 (as part of a system)
  • Contributes to LEED® points
  • Texas Department of Insurance
  • Florida Building Code Approved FL15216
  • Warnock Hersey
  • CAN/CSA A123.3

RhinoRoof U20 Limited Warranty

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InterWrap Corp (the “Seller”) warrants to the purchaser of these goods (the “Buyer”), the product RhinoRoof U20 synthetic roofing underlayment (hereinafter called “product”) it manufactures, if installed strictly pursuant to Seller’s application instructions. Warranty covers the products ability to shed water and not degrade, except as noted below, for a period of twenty (20) years from the sales invoice date or the product manufactured date printed on the product. (This is defined as the “Warranty Period”). The above warranty does not apply if: 1. any part of the product is exposed to UV after the primary roofing material has been installed; and 2. the product has been installed and left uncovered without the primary roof material for more than 60 days. 3. the product is installed with non-specified fasteners such as staples. 4. product is used for an application outside of the recommended slope as defined in the application instructions.
Buyer MUST give Seller written notice of any defects within 30 days from the date that the defect was discovered, along with field samples illustrating production codes, application details, and digital pictures. Seller reserves the right to reserve warranty claim judgment pending full field sample evaluation. Such notice shall be sent to The InterWrap Technical Service department located at 7163 Beatty Drive Mission, BC V2V 6C4; e-mail:; toll-free, 1-888-713-7663. Seller shall, at its sole option and as Buyer’s sole remedy, repair or replace the product or refund the purchase price for that portion of the product that has been proven to be defective, within the written warranty conditions. Buyer shall pay all handling or transportation charges. Failure to timely give Seller notice of a defect, or unauthorized repairs or alterations, or misuse or misapplication of the product makes this warranty VOID. Instructions on how to make a warranty claim can be found on our website.
This warranty does not cover leaks or damage caused by any penetrations (including penetrations by fasteners), or by animals, vandalism, abusive conditions, inadequate or faulty structural design, structural defects, building alterations, natural forces such as tornados, hurricanes, earthquakes, other acts of nature, or any other cause beyond Seller's control. The warranties set forth herein are Seller’s sole and exclusive warranties. Seller’s liability on any claim of any kind for any loss or damage arising out of, in connection with, or resulting from the manufacture, sale, or resale of the product shall in no case exceed the purchase price paid for the product, prorated from the date of purchase to the date of discovery of the defect.
In no event shall Seller be liable for other damages or for special, incidental, punitive or consequential damages. Seller makes no other warranties of any kind, express or implied, including without limitation, any warranty of merchantability or fitness for a particular purpose. No part of this warranty may be changed or cancelled except by a written document signed by Seller and Buyer. No course of dealing or performance, usage of trade or failure to enforce any term shall be used to modify the warranty. Buyer can not assign or permit any other transfer of this warranty without Seller’s consent. If any of the terms contained herein are unenforceable, such term shall be limited only to the extent necessary to make it enforceable, and all other terms shall remain in full force and effect. The warranty shall be covered by the laws of Washington, without regard to its conflicts of laws, provisions, and exclusive jurisdiction for any dispute arising from this warranty shall be in the state or federal courts of Washington.

RhinoRoof U20 MSDS

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I. Product Identification and Use:

Product Identification:
RhinoRoof U20
Product Use/Description:
Coated woven polyolefin for use as a roofing underlayment
Product Composition:
97%  polyolefin, 3% polymer blend

II. Hazardous Ingredients:
This is not a hazardous product as defined by WHMIS

III. Physical Data:

a.  Physical State:
b.  Odor and Appearance:
Pigmented odorless Woven fabric
c.  Odor threshold (ppm):
d.  Vapor Pressure (mmHg):
e.  Vapor Density (Air = 1):
f.   Evaporation rate:
g.  Boiling Point (oC):
h.  Freezing Point (oC):
i.   pH:
j.   Specific Gravity:
k. Coef. Water/oil Dist.:

IV. Fire and Explosion Data:

a. Flammability:
Not flammable, but in case of a fire it will contribute.
b. Means of extinction:
Water spray and dry chemicals.
c. Flash point (oC) and Method:
d. Upper flammable limit
(% by volume):

e. Lower flammable limit
(% by volume):

f. Hazardous combustion

Carbon Monoxide, Carbon Dioxide, Nitrogen Oxides
g. Explosion Data:
Not sensitive to impact nor to static discharge.

V. Reactivity Data:

a. Chemical stability:
b. Incompatibility with
other substances:

c. Reactivity:
d. Hazardous decomposition

No data.

VI.Toxicological properties:

a. Route of entry:
N. Ap.
b. Effects of acute exposure
to product:

None known.
c. Effects of chronic exposure
to product:

None known.
d. Exposure Limits:
Not available.
e. Irritancy of product:
f. Carcinogenicity:
Not on IARC list.
g. Synergistic Products:
None known

VII. Preventive Measures:

a. Gloves:
b. No respirator required under
normal use.

c. Leak and spill procedure:
d. Waste disposal:
See your local authorities for disposal instructions.
e. Handling and Storage:
Rolls should be adequately restrained to prevent shifting during handling and storage.
f. Storage Requirements:
g. Special shipping information:

VIII. First aid measures:

IX. Other Information:

a. DOT Shipping Name:
Not Available
b. DOT Hazard Class:
Not Available

Prepared by: IW R&D group. (604) 820-5400
Revision Date: February 8, 2012

This information is furnished without warranty expressed or implied, except that it is accurate to the best knowledge of  InterWrap Industries Inc. The data on this sheet relates only to the specific material designated herein. InterWrap Industries Inc. assumes no legal responsibility for use or reliance upon this data.

*N.Ap. None Applicable