A Simple Way to Flash Window Sill Pans
SillDry is an efficient alternative to a site-built pan.
Sill-pan flashing is an essential detail to get right if you want a house to last. Most builders make their own sill pans with a combination of tapes, sealants, and pieces of bevel siding (to create a pitch to let water drain to the outside), but this one-piece manufactured sill pan by SillDry makes the installation process simple, foolproof, and in many cases even more affordable.
Fine Homebuilding Editorial Adviser Mike Guertin stumbled upon the SillDry sill pan while checking out the exhibitors at the 2020 International Builders’ Show. There are several details that make it an especially attractive alternative to a site-built pan. First off, the accordion-like construction makes the pan both seamless and adjustable, leaving no room for water to get under the sill. And the generous slope built into the pan ensures that any water that does get past the window will quickly drain to the outside rather than puddling where it could cause damage to the window or framing. The pan also includes several built in shim platforms that create the perfect-size gap under the window for easy air-sealing after installation.