Inverted formwork
The telescopic formwork is a horizontally mounted wooden formwork , in which the upper board covers the few centimeters below it so that the rain cannot run in between the boards. The inverted formwork is mainly attached to wooden facades to protect against the effects of the weather. The boards are often sawn in such a way that a water nose emerges in the profile , so that the draining water does not run to the contact surface and can possibly penetrate by capillary action .
Newer inverted formwork usually consists of wedge-shaped tongue-and-groove boards . This type is also called wedge-shaped formwork. The thickened lower part usually has a groove into which the flat upper end can be pushed. This means that the shuttering boards are fully in contact with the substructure and can be easily attached. The result is a very homogeneous view. Throwing of the boards is largely prevented by the tongue and groove connection and the formwork is relatively windproof.
If protection against drifting snow and driving rain is guaranteed in another way, rhombus strips can be used instead of overlapping shuttering boards , which are bevelled outwards on the upper and lower sides to dissipate the falling precipitation. These are generally installed at a distance to create the impression of a lamellar facade. It may be followed as a black colored underlayment ensure a uniform joint and wind resistance.
The Captain William Smith House in Minute Man National Historical Park , a restored saltbox- style wooden house with unpainted inverted cladding
A Dutch Colonial Revival- style building with cladding in New London , Connecticut
