Flashing Factors La Plata MD

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 La Plata.

Mr. A.C. Inc.
(301) 932-0900
4395 Lady Trisha Ct.
Pomfret, MD
 
Rent-A-Crane Inc
(703) 550-7097
7905
Lorton, VA
 
LHI DESIGNS
(703) 401-3141
6537 riefton ct.
alexandria, VA
 
Kilpatrick Contractor
(571) 389-0798
5604 Vine St
Alexandria, VA
 
J E S Construction Inc
(301) 790-0446
6830-B Putman Rd
Thurmont, MD

Data Provided by:
El Progreso Construccion Masonry works
(240) 765-9158
3620 stonesboro road
fort washington, MD
 
LHI & Design
(703) 401-3141
6537 Riefton ct.
Alex., VA
Services
Architectural plans and permits, constructions and design

LHI & Design
(703) 401-3141
6537 Riefton Ct
Alexandria, VA
Services
Architectural design / residential construction
Prices and/or Promotions
Free design plus permit drawings if awarded construction contract

Artitech Construction
(301) 519-6997
7809 Breezy Down Ter
Rockville, MD

Data Provided by:
Baileys Industries
(301) 916-5140
Po Box 4166615 S. Frederick Ave
Gaithersburg, MD

Data Provided by:
Data Provided by:

Flashing Factors

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

Local Events

Archiving 2009
Dates: 5/5/2009 – 5/8/2020
Location:
Crystal City Hilton Arlington
View Details