Flashing at Sills Centereach NY

Sill flashing in Centereach controls water that penetrates through the masonry sill and helps control water penetrating the perimeter sealant joint around the windows. The sill flashing will prevent water from saturating the top of the masonry beneath the sill.

Local Companies

Ledger Domain
(212) 534-5800
389 E 89th St Apt 32A
New York, NY
Bowne Management Systems
(518) 443-5913
39 N Pearl St
Albany, NY
Mehra Sudhir
(212) 929-5300
13 E 16th St
New York, NY
Anm Management Co
(718) 892-6592
2522 E Tremont Ave
Bronx, NY
Service America
(631) 271-3126
124 Jericho Tp
Huntington Station, NY
E K Ward and Associates of the Southern Tier
(716) 484-0590
509 N Main St
Jamestown, NY
Corporate Management Group Llc
(518) 446-9024
845 Central Ave
Albany, NY
Jb Management
(585) 265-1620
26 E Main St
Webster, NY
Presidential Managmnt Corp
(914) 776-2076
1468 Midland Ave
Bronxville, NY
B T I Management
(315) 668-2007
39 US Highway 11
Brewerton, NY

Provided By:

Source: MASONRY CONSTRUCTION MAGAZINE
Publication date: July 1, 2000

Why do people install flashings beneath masonry sills? Are they required if a single-piece stone sill is used?

Sill flashing controls water that penetrates through the masonry sill and helps control water penetrating the perimeter sealant joint around the windows. The sill flashing will prevent water from saturating the top of the masonry beneath the sill. These flashings are especially important when using rowlock brick sills or other sills that have many joints. Multiple joints increase the risk of developing excessive water penetration into the masonry below.

In hot humid climates, sill flashings may also be helpful in preventing hot humid cavity air from condensing on the underside and perimeter of the window. In this case, the sill flashings should be integrated with a cavity seal at the window head and jambs.

When using a single-piece stone or precast concrete at a window, the flashing is less important. Very little water will penetrate a single-piece stone or concrete sill. Flashings, however, are still useful in controlling water penetration at perimeter sealant joints or preventing hot humid cavity air from reaching the perimeter of the window. Where flashing is not used, the stone or precast concrete sill should project beyond the face of the masonry and contain a drip. This will prevent water penetration at the joint beneath the sill. This joint will often crack due to differential m...

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