U Channel Sill: Snap on Seal
Custom making all our bifold doors and bifold windows has its benefits as it allows us to flush these with the floor or bench on both sides. To do this, we use our u-channel sill. Using this, there will be a small gap between the bifold and the floor or bench as shown in the cross-section below.
To help seal the bifold from the weather, we can (on request) fit a snap-on seal that helps seal the bifold (as shown below).
It should be noted that this u-channel sill is inferior to our standard sill option and if there is penetrating wind and rain, there is a chance that some water may leak into the building. Usually, u-channel sills are only used for internal doors, where there is an eave covering the bifold, or if water leaking onto a bench top/tiles in a storm is not an issue.
Get in touch with our team to discuss what sill option would suit your project best.