Flashing Factors South Richmond Hill 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 South Richmond Hill.

Local Companies

Ivonne Ibarra
(212) 398-6881
108 W. 39th Street
New York, NY
TRI STATE STONE
(973) 418-5868
111 ROME ST
NEWARK, NJ
VISCO ASBESTOS REMOVAL
516 547 2510
235 ROBINS LA
SYOSSET, NY
Gotham Builders
800-444-4923
203- 20 Rocky Hill Road
Bayside, NY
Van Go General Contracting
(201) 387-9013
326 So. Washington Ave
Bergenfield, NJ
Olim Construction Inc.
646-294-5077
8510 34th Ave Apt.420
Jackson Heights, NY
Gold and Silver Home Care
(212) 685-5750
316 5th Avenue
New York, NY
CWC Plumbing and Heating LLC
718-268-8898
90-04A 70th Avenue
Forest Hills, NY
Calico Construction Corp
(201) 432-1333
15 Wright Ave
Jersey City, NJ
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 Articles
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