Flashing at Sills Huntington Station NY

Sill flashing in Huntington Station 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

RBK NEW YORK CORP
(516) 825-3268
29 Aberdeen Street
Malverne, NY
Public Power & Utility Inc
203-333-6969
3 Parklands Drive
Darien, CT
WAC Lighting
1.800.526.2588
615 South Street
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Gei Consultants
(631) 760-9300
110 Walt Whitman Rd Ste 204
Huntington Station, NY
Service America
(631) 271-3126
124 Jericho Tp
Huntington Station, NY
Illuminetrix, Inc
516-798-1309
87 Pennsylvania Avenue
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Enhanced Home
914-560-4100
163 North Main Street
Port Chester, NY
Illuminations
516-766-4880
251 Sunrise Highway
Rockville Centre, NY
Shore Systems Inc
(631) 425-1863
350 Walt Whitman Rd
Huntington Station, NY
Dorino Inc
(631) 367-1156
55 W Hills Rd
Huntington Station, 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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