Flashing at Sills Spring Valley NY

Sill flashing in Spring Valley 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

Lighting New York
845-786-LITE (5483)
4 Carol Street
West Haverstraw, NY
Envision Associates
(845) 425-3334
86 Hungry Hollow Rd
Spring Valley, NY
Friedland Association
(845) 352-9104
50 Commerce St
Spring Valley, NY
Ash Kane Associates
(845) 426-2902
6 Innington Ct
Spring Valley, NY
Wf Management
(718) 633-0628

Brooklyn, NY
Weiss & Biheller
(212) 979-6990
440 Nepperhan Avenue
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Renaissance Electric Corp
(718) 515-2853
4039 Laconia Ave
Bronx, NY
New York State Small Business Development Center
(845) 356-6065
185 N Main St
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Early Head Start Cic
(845) 354-4118
1 Washington St
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Redeker Management Consulting
(518) 798-0080
23 Honey Hollow Rd
Queensbury, 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...

Click here to read full article from Masonry Construction

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