Flashing at Sills Hopewell Junction NY

Sill flashing in Hopewell Junction 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

JR Electric Service Inc.
(845) 255-4088
PO Box 243
New Paltz, NY
Management Recruiters of Mid-Hudson Valley
(845) 227-3161
2537 Route 52 Ste 14
Hopewell Junction, NY
Buckhead Management
(845) 227-3808
1886 Route 52
Hopewell Junction, NY
Regulatory Assistance Corp
(845) 896-4340
17 Clearview Cir
Hopewell Junction, NY
Ultimate Enterprises Inc
(718) 568-3605
900 South Ave
Staten Island, NY
Capitol Electrical Contracting, Inc.
(845) 255-7088
286 McKinstry Road
Gardiner, NY
All Business Consulting
(845) 227-7664
7 Whalen Dr
Hopewell Junction, NY
Orda
(845) 226-4218
8308 Chelsea Cv N
Hopewell Junction, NY
Ferrero & Associates
(845) 226-2522
173 Cranberry Dr
Hopewell Junction, NY
Bechtel Corporation
(212) 689-0100
21 E 40th 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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