PRO-515 Ultra® All-Purpose, All-Surface Construction Adhesive

ROMAN PRO-515 Ultra is a specialty, high-performance MS Polymer Construction Adhesive and Sealant for projects requiring a low viscosity, high grab adhesive. Ideal for both interior and exterior use, PRO-515 Ultra combines the best features of silicones and polyurethanes to create a rapid, moisture-curing adhesive for porous and non-porous materials. With high bond strength and exceptional adhesion to various substrates, including steel, wood, glass, drywall, concrete, and stone, PRO-515 Ultra ensures a durable, long-lasting bond. Its flexible, waterproof, paintable, UV-resistant formula, along with resistance to picking and stripping, guarantees reliability. It is easy to gun apply, tool and finish, delivering a very professional touch to your projects.

Recommended Use

  • Ideal for bonding rigid panels, steel, wood, glass, drywall, concrete, stone, and more

Key Features

  • Single-component, solvent-free polymer adhesive and sealant, masterfully engineered for both sealing and bonding tasks that remains flexible after application
  • With its low viscosity ensuring high grab, PRO-515 Ultra delivers unmatched bond strength, guaranteeing superior adhesion across virtually all surfaces
  • Great option to substitute mechanical systems (welding, screwing, nailing) and decrease total weight, eliminate water trapping and add movement flexibility, while increasing speed of application
  • Expect a tough, flexible, and anti-pick joint that’s ideal for both interior and exterior applications
  • Waterproof, paintable and UV-resistant
  • VOC: < 1 g/L
20.2 Ounce

ROMAN recommends contacting the retailer before purchase to ensure that the product you are looking for is available.

Application Instructions

Surface Preparation: The surface must be free from grease and other residues, dry, smooth, and structurally sound. Check surfaces for paint bonding, damaged wallboard or plaster. Repair all unsound surfaces. Before proceeding with any unusual conditions, consult your adhesive or wallcovering supplier.

After completion of the required surface preparation, it is critical to test the surface with the adhesive to ensure compatibility. Select a small, inconspicuous area of the surface for testing and apply the adhesive as specified. Inspect the test area after 24 hours for any defects or inconsistencies before proceeding.

Dilution: Do not dilute.

Application Method: Manual or pneumatic caulk gun for “Sausage Packs”. Preferred tips include a foil-pack nozzle, triangular pre-cut foil-pack nozzle, or multi-bead applicator.

Avoid contact with the surface of embossed, textured or delicate wallcoverings.

Application Temperature: 50°F to 86°F

Clean-Up: Before the adhesive dries, remove any excess with clean water. Additional effort may be required if the adhesive is allowed to contact the surface of embossed or textured vinyls.


If you scrape, sand, or remove old paint, you may release lead dust. LEAD IS TOXIC. EXPOSURE TO LEAD DUST CAN CAUSE SERIOUS ILLNESS, SUCH AS BRAIN DAMAGE, ESPECIALLY IN CHILDREN. PREGNANT WOMEN SHOULD ALSO AVOID EXPOSURE. Wear a NIOSH-approved respirator to control lead exposure. Clean up carefully with a HEPA vacuum and a wet mop. Before you start, find out how to protect yourself and your family by contacting the National Lead Information Hotline at 1-800-424-LEAD or log on to

Roman Products, LLC does not endorse the use of any product in an installation that does not meet a Class A fire rating or any applicable code. Testing by a certified laboratory should be conducted to verify that the installation meets a Class A fire rating and to guarantee compliance with all applicable codes. Specifically, if a Roman product is used to hang wallpaper over existing wallpaper, it is unlikely to meet these standards.

Limited Warranty

ROMAN Products, LLC warrants that it will replace this product free of charge, if, within 12 months of manufacture, it is found to be defective in material or workmanship. This warranty is in lieu of any other. The exclusive remedy is limited to the replacement of the product and ROMAN disclaims all liability for consequential, punitive, and special damages. Conditions of use are beyond our control.


Store in a cool, dry place. Do not take internally. In case of ingestion, seek medical attention. Avoid contact with skin and eyes. Use of skin and eye protection is recommended at all times. If contact with eye occurs, flush with water for 15 minutes. If skin contact occurs, wash with soap and water. Seek medical attention if rash or other symptoms occur. Do not mix with other chemicals. Use in a well-ventilated work area. Close container after each use. Keep out of reach of children.


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Product Type Specialty Construction Adhesive
Coverage Variable
VOC (Regulatory) < 1 grams/Liter
Color White
Interior/Exterior Interior
Strippable Not Strippable
Drying Time Drying time will vary depending on the temperature, ventilation and humidity of the room.
Product Storage Do not freeze. Keep in a cool, dry place.

Safety Data Sheets

Technical Data Sheets


ROMAN products featuring a “USDA® Certified BioBased Product” logo have achieved third-party verification of biobased content and have earned USDA Certification.

BioBased products are commercial or industrial products composed, in whole or in significant part, of biological products such as renewable domestic agricultural materials like corn and wheat. These BioBased products provide an alternative to conventional petroleum derived products.

For more information on the USDA BioPreferred program, please visit: