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Home > Roof Seal > Eternabond RoofSeal 4" x 50' Black - RSB-4-50 Leak Repair Tape
Eternabond RoofSeal 4" x 50' Black - RSB-4-50 Leak Repair Tape
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MSRP: $79.99
Price: $58.75
You Save: $21.24 (27 %)
Item Number: RSB-4-50
Manufacturer: Eternabond
Manufacturer Part No: RSB-4-50
Quantity Discounts
| Quantity | Amount |
| 2 to 4 | $57.58 |
| 5 to 9 | $55.81 |
| 10 or more | $54.64 |
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Seal any rip, tear, or open seam in any surface with RoofSeal. Works on virtually all roof types including EPDM, TPO, hypalon, most PVC, modified and all metal. Color: Black Size: 4" x 50' Roll. 35 mil thickness
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Product Features & Specifications
RoofSeal even works great on land-fill and pond liners. Our specialized backing has proven to be UV stable, even after 19 years in full sunlight. Our MicroSealant has a built in primer which allows RoofSeal to bond with the surface it is installed on. Perfect for re-seaming all roofs, regardless of the material. RoofSeal makes a permanent water-tight seal.
Did you know RV roof seams require yearly maintenance? Use RoofSeal over factory roof seams one time and never do roof seam maintenance again! More than 25 high-end RV manufacturers now use EternaBond products in the manufacturing of their dream machines to ensure their customers will truly have a weather tight, leak-proof RV.
Elongation factor greater than 700% guarantees RoofSeal will flex, expand and contract in all conditions! Can be installed to -20°F (with our EternaPrime). Sag rating of over 250°F.
Basic Use
RoofSeal/OneStep tape is used to seal roof joints (seams) and tears, flashings, copings, skylights, gutters, etc. Perfect for repairing and restoring roofs on mobile homes and RVs. RoofSeal/OneStep seals to itself so it can be cut and folded around an object.
Composition
RoofSeal/OneStep utilizes EternaBond’s advanced MicroSealant Technology, a 100% solids formulation of synthetic resins, thermoplastics and non-curing rubber (non butyl) with a built in primer. It is bonded to a UV stable backing. The adhesive coating is protected by a silicone release liner, to be removed prior to application.
Technical Data
| Adhesion
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20lbs+/in width
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| Application temperature
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150°F to -20°F ambient
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| Available widths
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Up to 8"
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| Colors
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Black, Gray, Tan, White
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| Elongation
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>700% +/- 100
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| Low temperature flexibility
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½" radius at -30°F
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| Permanence
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.001 perms maximum
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| Pliability
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No cracks in membrane
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| Shelf Life
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Up to 5 years
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| Standard case quantity
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100 sq. ft. per case
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| Standard roll size
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2", 4", 6", 8" X 50’
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| Tensile break PSI
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4500 PSI +/- 500 PSI
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| Total thickness
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35 mils (+/- 2 mils)
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| Water vapor test
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(ASTME 96B) .005 grms/100" sq./24hrs/100°F
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Surface Preparation
Surface must be clean and dry. Moisture, dust, dirt, or other foreignmatter should be removed. Remove oil and grease, etc. with EternaClean or a non residue cleaner such as acetone or lacquerthinner. Remove salt and other contaminants
Application
Install RoofSeal/OneStep over the repair area, removing the release liner gradually to prevent contamination of the adhesive prior to application. Rub or roll with pressure using your hand or a steel roller to activate bonding process. This material may be applied to clean dry surfaces from 150°F to -20°F ambient. Treat surface with EternaPrime for installations from 40°F to -20°F ambient.
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MSRP: $79.38
Price: $60.71
You Save: $18.67 (24 %)
EternaBond AlumiBond is extremely tough and hard, perfect for holding back pressure in holding and gravity tanks. AlumiBond requires no UV protection, and can be painted to match the repair. 4" x 50' Roll. 20 mil overall thickness, 4 mil's of aluminum
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MSRP: $53.14
Price: $40.64
You Save: $12.50 (24 %)
Use DoubleStick MicroSealant Putty Tape to seal overlapping products, such as between skylight and vent flanges or twist it into a rope and use it as a gasket, or for sealing around floor penetrations 2" x 50' Roll. 60 mil thickness
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EternaClean Spray Cleaner is formulated with a proprietary mixture of hot solvents, designed to "open" single-ply roof membranes and metals. 14 fl oz Spray Can
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MSRP: $24.45
Price: $22.10
You Save: $2.35 (10 %)
EternaPrime is an adhesive and surface conditioner intended to aid adhesion of EternaBond MicroSealant tapes, or other non- MicroSealant tapes such as butyl tapes and other self adhesive seaming tapes. 17 fl oz Spray Can
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The EternaBond 2lb, 2-1/2" wide curved-end ball bearing steel roller is convenient and easy to use. Use the EternaBond steel roller to ensure proper pressure is applied for a permanent seal.
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MSRP: $65.27
Price: $37.66
You Save: $27.61 (42 %)
EternaBond WindowSeal is a thin polyethylene film coated with our MicroSealant. This means EternaBond WindowSeal fuses to virtually all construction metals, wood, vinyl, OSB, metal, aluminum, brick, concrete, even glass. 4" x 50' Roll. 20 mil
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RV Applications
Home Applications
Commercial Applications

EternaBond Overview
(49 sec)
EternaBond RoofSeal
(1 min)
EternaBond Doublestick?
(8 min, 51 sec)
Preventative Maintenance
(2 min, 4 sec)
Skylight Curb Installation
(1 min, 29 sec)
This Old EPDM Roof
(12 min, 46 sec)
EternaBond in the Cold
(1 min, 23 sec)
Seam Repair
(1 min, 39 sec)
Repairing a Modified Roof
(1 min, 23 sec)
Coping Repair
(4 min, 37 sec)
Repairing Thermoplastic
(1 min, 39 sec)
Metal Roof Restoration
(13 min, 38 sec)
Peel & Stick Tarp
(3 min, 30 sec)

Reseal Exterior Ductwork
(3 min, 52 sec)
Sealing Wall Penetrations
(8 min, 16 sec)
Air Handler Repair
(6 min, 20 sec)
Sealing Air Leaks
(4 min, 47 sec)
Armaflex Pipe Insulation
(2 min, 42 sec)
Ductwork Insulation Repair
(10 min, 02 sec)
Making Flex to Rigid Duct
(10 min, 20 sec)
Save on Roofing Costs:
(7 min, 48 sec)
Pitch Pockets on any Roof
(10 min, 38 sec)

Anatomy of a Roof
(4 min, 53 sec)
EternaBond in RV MFG
(1 min, 43 sec)
EternaBond on Slide
(4 min, 40 sec)
Sealing RV Floor
(43 sec)
RV Roof Repair & Vent
(5 min, 16 sec)
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