Flashing at Sills East Syracuse NY

Sill flashing in East Syracuse 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

Thyssen Krupp Elevator
(315) 437-1711
6067 Corporate Dr Ste 3
East Syracuse, NY
Hr One Inc
(315) 463-0004
220 W Manlius St
East Syracuse, NY
Highpointe Business Solutions
(518) 235-0679
20 Viewpoint Dr
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Corbett Michael F & Associates
(845) 452-0600
1133 Route 55
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Jeffre Scott Retail Product Management
(212) 254-9700
32 Union Sq W
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Amtek Management Svc
(315) 463-0004
220 W Manlius St
East Syracuse, NY
Degroot Management Services Inc
(315) 434-1900
6501 Basile Rowe
East Syracuse, NY
Upstate Technical Equipment
(315) 463-6200
24 Corporate Cir Ste 1
East Syracuse, NY
Associated Consultants
(914) 241-2700
Haines Rd
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Friends of the Renny Inc
(718) 320-7902
3560 Bivona St
Bronx, 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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