Flashing at Sills Ronkonkoma NY

Sill flashing in Ronkonkoma 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

Arcee Industries Inc
(631) 580-1834
215 Iroquois St
Ronkonkoma, NY
Prestige Management
(631) 543-0929
357 Veterans Memorial Hw
Commack, NY
Visibility Consulting Services
(347) 789-9283
1626 Bedford Ave
Brooklyn, NY
Ms Consultants Llc
(716) 633-9840
6400 Sheridan Dr
Buffalo, NY
Coda Business Group
(845) 986-9095
10 Galloway Hts
Warwick, NY
Medcomp Services Ltd
(631) 467-1535
3075 Veterans Memorial Hw
Ronkonkoma, NY
Reiter Resources Inc
(212) 779-4743
425 Park Ave S
New York, NY
Davidowitz & Assoc Inc
(212) 661-2828
708 3rd Ave
New York, NY
Lake Associates Inc
(518) 732-0526
761 Sultan Ln
Schodack Landing, NY
Go Fumio
(585) 787-2270
63 Seawatch Trl
Webster, 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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