Expansion Joints and Pre-Compressed Sealants

25V at Museum for Fine Arts parking garage, Boston
in vertical expansion joints installed in 1988 (Museum of Fine Arts parking garage, Boston)


Primary seal in masonry where black reveal or shadow-line effect is desired.

Long-term, economical, high-performance seal for above-grade wall joints in concrete, brick, stone, etc. where black reveal or shadow-line effect is desired or in concealed conditions.

Permanently elastic, high-density, open-cell polyurethane foam, impregnated with water-based, polymer-modified asphalt, compressed to approximately 25% of its uncompressed dimension.

Supplied pre-compressed to smaller than joint size with additional self-adhesive on one face to aid installation, Material is inserted into the joint and adhered to one side. It then expands to seal the joint.

Sealing between the foam and substrate is achieved through a combination of the pressure-sensitive adhesive impregnation and the back pressure of the expanding foam.

Material is installed flush or near to the surface as a primary seal.

Standard sizes from 1/4" (6mm) to 4" (100 mm)

Movement capability is +25%, -25% (50% total) of nominal material size.

Joints in below-grade foundation walls utilize the higher-density 20H System.


EMSEAL JOINT SYSTEMS LTD. 25 Bridle Lane, Westborough, MA 01581
EMSEAL LLC. 120 Carrier Drive, Toronto, ON M9W 5R1



1-800-526-8365 -- 508-836-0280 --  techinfo@emseal.com -- Fax: 508-836-0281

Copyright © 1998-2015 by EMSEAL Joint Systems, Ltd. All rights reserved.
This document may not be reproduced in whole or in part without permission.