Flashing at Sills Elmira NY

Sill flashing in Elmira 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

3C New York Inc
(212) 271-6376
450 W 15th St
New York, NY
Trade Assn Managmnt Inc
(914) 332-0040
25 N Broadway
Tarrytown, NY
Friedland Association
(845) 352-9104
50 Commerce St
Spring Valley, NY
Fastronics Svce Inc
(631) 226-4590
655 N Queens Ave
Lindenhurst, NY
Samsom Mgmt Corp
(212) 888-0134
865 United Nations Plz
New York, NY
Johnson Robert E Consulting Inc
(607) 734-4677
888 Upland Dr
Elmira, NY
Cafau Management Company
(518) 456-4422
2080 Western Ave
Guilderland, NY
Shinda Management
(718) 262-9167
11018 Sutphin Blvd
Jamaica, NY
Dover Brook Assoc
(845) 469-4809
120 Murray Dr
Chester, NY
Exodus Associates
(212) 491-3993
210 W 146th St
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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