Flashing Factors East Meadow NY

Rowlock brick sills contain many joints and are particularly susceptible to water penetration. For this reason, I do not recommend their use in freeze-thaw environments in East Meadow.

Local Companies

Vintage Homes, Inc.
917-642-2390
15 Cuttermill Road
Great Neck, NY
Acrhitectural Metal & Glass Estimating Services LLC.
516-662-2875
96 Cypress Street
Floral Park, NY
JC Homecare
631 756 5600
200 Rt 110
Farmingdale, NY
Gotham Builders
800-444-4923
203- 20 Rocky Hill Road
Bayside, NY
Building Structures Unlimited
888-492-1136
17 Reservoir Road Suite 3A
Melville, NY
Bargain Tile
516-593-3939
430 Sunrise Highway
Lynbrook, NY
slr general construction
1646 420 2006
173 morton blvd
plainview, NY
BELLA PORTA LLC.
888-366-7748
92 Front street
Hempstead, NY
Citi Skyline contractors inc.
(917) 583-3312
68-01 Forest avenue
Ridgewood, NY
Uvs Construction
(718) 554-0426
Beach 74Th St
Arverne, NY
Data Provided by:
  

Provided By:

Source: MASONRY CONSTRUCTION MAGAZINE
Publication date: October 1, 2005

Should flashing be used beneath rowlock brick window sills? If through-wall flashing is installed beneath these rowlocks, how are the sills anchored? If the anchors penetrate the flashing, does this lead to deterioration of the masonry below in freeze-thaw environments?

Rowlock brick sills contain many joints and are particularly susceptible to water penetration. For this reason, I do not recommend their use in freeze-thaw environments.

When they are used in freeze-thaw environments, however, the flashing beneath them is critical to prevent water from saturating the top of the masonry wall below. Snow and ice collects on the rowlock sills. When they melt, water can penetrate the sills and refreeze, resulting in deterioration. This scenario is a particular problem with the anchorage of these sills because they break apart.

When rowlock sills are used, they can be anchored using galvanized corrugated wall ties in the head joint between every fourth to sixth brick unit. When possible, I prefer that these anchors be attached to the backup wall on the vertical face, behind the sill.

It also is possible to extend flat strap anchors through the flashing. However, any penetrations through the flashing must be carefully sealed.

Click here to read full article from Masonry Construction

Related Local Event
Long Island Building & Facility Maintenance Show
Dates: 5/5/09 - 5/8/20
Location: David S. Mack Sports & Exhibition Complex - Hofstra University
Hempstead, NY
View Details