Flashing at Sills East Amherst NY

Sill flashing in East Amherst 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

APF 32 LTD.
716 836-7190
278 Faraday Rd
Tonawanda, NY
Winking Group Llc
(212) 566-6797
75 E Broadway
New York, NY
Coleman and Associates
(315) 394-0295
7814 State Highway 68
Ogdensburg, NY
Imperial Consulting
(631) 439-0222
734 Walt Whitman Rd
Melville, NY
Delta Stratagem
(585) 387-0999

East Rochester, NY
Be-Bright Lighting, Inc.
(716) 907-3763
P.O. Box 458
East Amherst, NY
Preciosa International, Inc.
(716) 626-9759
2316 Wehrle Dr.
Williamsville, NY
Novalis Health Networks of America Inc
(518) 862-3400
1 Columbia Cir
Albany, NY
Proteus International Inc
(845) 679-2020
124 Green St
Kingston, NY
Contract Carpet Consultants Inc
(212) 717-0670
444 E 82nd St Apt 15H
New York, 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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