Concrete Pool Deck Sealers  /  Products  /  KOOL-ROD – Closed-Cell Polyethylene Backing Rod

KOOL-ROD – Closed-Cell Polyethylene Backing Rod

#791         PDF Print Version        CSI 07 91 23


KOOL-ROD is a closed cell, polyethylene, flexible, rope-like foam joint backing material.

This material is virtually non-absorbent and chemically inert to most solvents. KOOL-ROD will not stain or adhere to sealant materials. It is fully compatible with acrylic, butyl, polyurethane, polysulfide, silicone, and most other cold-applied sealant compounds.

KOOL-ROD is specifically designed as a compressible backing material to be used in conjunction with a wide variety of cold-applied joint sealants.

KOOL-ROD is highly adaptable for both vertical and horizontal applications. It is commonly used in glazing operations, copings, between precast panels, and around door and window perimeters. It provides the perfect backing for all types of construction, expansion, isolation, control, and pavement joints.

  • ASTM C 1330
  • Controls depth of sealant/Ensures proper joint design ratio.
  • Forces sealant against joint sidewalls/ Provides maximum sidewall adhesion.
  • Sealants will not adhere to KOOL-ROD/ Eliminates three-sided joint adhesion failure.
  • Closed-cell foam technology/Does not allow air or moisture entrapment.
  • Easily compressible, lightweight/Installs quickly, stays in place.
  • Easy to handle, smaller packaging/Added contractor convenience.


#224 SOF-SEAL® two-part, low-modulus, polymer joint sealant
#225 #158 rubberized joint sealant
#226 GARDOX® two-part, cold tar rubber joint sealer
#235 SAFE-SEAL® 3405 high performance, multi-purpose asphalt joint sealant
#784 – #788 DECK-O-SEAL® one- & two-part polysulfide sealants

Joint or opening must be clean, dry and free of obstructions. Select the proper rod diameter and cut to length or use directly from the spool. With a blunt instrument or roller, uniformly install rod at a level recommended by the sealant manufacturer, specifier, or architect. Generally, the depth of the joint after KOOL-ROD is installed should be half the width. Very large and very small joints vary in terms of this depth-to-width ratio.

Do not tear, puncture, twist, or overly compress the backer rod during installation. Caution should be used to avoid any situation where voids may form and trap air/moisture between backer rod and sealant. Care should also be taken to prevent the introduction of air bubbles into the sealant during mixing (if any) and/or installation.


Rod Diameter Joint Width Footage/Carton Packaging
1/4″ (6 mm) 3/16″ (4 mm) 4000 LF (1219 m) 2 spools/carton
3/8″ (9.5 mm) 1/4″ (6 mm) 2100 LF (640 m) 2 spools/carton
1/2″ (12 mm) 3/8″ (9 mm) 2500 LF (762 m) 2 spools/carton
5/8″ (15 mm) 1/2″ (12 mm) 1550 LF (472 m) 2 spools/carton
3/4″ (19 mm) 5/8″ (15 mm) 1100 LF (335 m) 2 spools/carton
7/8″ (22 mm) 3/4″ (19 mm) 850 LF (259 m) 1 spool/carton
1″ (25 mm) 7/8″ (22 mm) 600 LF (182 m) 1 spool/carton
1 1/4″ (31 mm) 1″ (25 mm) 400 LF (122 m) 1 spool/carton
1 1/2″ (38 mm) 1 1/8″ (27 mm) 396 LF (121 m) 6′ sections/carton
2″ (50 mm) 1 5/8″ (41 mm) 228 LF (69 m) 6′ sections/carton

August 2008

P.O. BOX 397 HAMPSHIRE, IL 60140 PHONE: 800-542-POOL (7665) FAX: 847-214-2268

“DECK-O-SEAL®, A Division of W. R. MEADOWS, INC., warrants at the time and place we make shipment, our material will be of good quality and will conform with our published specifications in force on the date of acceptance of the order.” Read complete warranty. Copy furnished upon request.
The information contained herein is included for illustrative purposes only, and to the best of our knowledge, is accurate and reliable. DECK-O-SEAL cannot however under any circumstances make any guarantee of results or assume any obligation or liability in connection with the use of this information. As DECK-O-SEAL has no control over the use to which others may put its product, it is recommended that the products be tested to determine if suitable for specific application and/or our information is valid in a particular circumstance. Responsibility remains with the architect or engineer, contractor and owner for the design, application and proper installation of each product. Specifier and user shall determine the suitability of products for specific application and assume all responsibilities in connection therewith.

Next Steps: Contact Us | Locate a Distributor

U.S. Green Building Council Association of Pool & Spa Professionals Independent Pool & Spa Service Association National Plasterers Council

For further green and LEED information on DECK-O-SEAL products, visit the W. R. MEADOWS Green Page.