Selecting a Joint Sealant Saint John NB

The sealants used to provide weather protection in masonry expansion and control joints form the final link in the cladding envelope. Successful movement joints that are watertight and durable require proper joint design and construction in Saint John; adequate joint sizing; appropriate product selection; and careful sealant installation in Saint John.

KGC Building Supplies Ltd
(506) 674-2128
1143 Bayside Drive
Saint John, NB
 
Kent Home Improvement Warehouse
(506) 648-1000
85 Consumers Drive
Saint John, NB
 
Home Hardware Building Centre
(506) 658-4663
1120 Loch Lomond Road
Saint John, NB
 
Home Hardware Building Centre
(506) 858-8100
257 Elmwood Drive
Moncton, NB
 
Home Hardware Building Centre
(506) 658-4663
1120 Loch Lomond Road
Saint John, NB
 
Restore - Habitat For Humanity
(506) 635-7867
388 Rothesay Avenue
Saint John, NB
 
Ritchie's Building & Flooring Centre
(506) 633-2022
715 Rothesay Avenue
Saint John, NB
 
Kent Home Improvement Warehouse
(506) 474-7000
25 Two Nations Crossing
Fredericton, NB
 
KGC Building Supplies Ltd
(506) 674-2128
1143 Bayside Drive
Saint John, NB
 
Happy Harry's Affordable Building Centres
(506) 855-7999
140 Caledonia Road
Moncton, NB
 

Selecting a Joint Sealant

Provided By:

Source: MASONRY CONSTRUCTION MAGAZINE
Publication date: December 1, 1996

By Christine Beall

The sealants used to provide weather protection in masonry expansion and control joints form the final link in the cladding envelope. Successful movement joints that are watertight and durable require proper joint design and construction; adequate joint sizing; appropriate product selection; and careful sealant installation.

The choice of sealant material should be based on performance, aesthetics, and durability. Only high-performance elastomeric sealants, such as polysulfides, urethanes, and silicones, should be used in masonry control and expansion joints. These sealants are covered by ASTM C 920 Standard Specification for Elastomeric Joint Sealants.

The movement capability of sealants is closely related to modulus of elasticity, defined as the ratio of the force (stress) needed to elongate (strain) a sealant to a certain point. Many sealants are available in single-component and multi-component formulations. Single-component sealants are supplied ready for application and require no mixing. Multi-component sealants are mixed at the jobsite just before application.

To maintain movement capability over an extended service life, sealants must have good elasticity in cyclic movements. Elasticity is a measure of the sealant's ability to recover its original shape after elongation or compression.

Click here to read full article from Masonry Construction