Abstract: To increase the strength and water resistance of a joint between two slabs of building materials, an interface for inserting bonding material between the joins of two interlocking members is used. The interface has two interlocking slabs, a tongue ridge, a groove slot, a fill channel, and a quantity of adhesive. The two interlocking slabs are the pieces of building material that are joined by the interface. To accomplish this, the tongue ridge connects to the first interlocking slabs, and the groove slot traverses into the second interlocking slab. The tongue ridge engages the groove slot to form an interlocking connection. The fill channel traverses through the tongue ridge along the length of the tongue ridge so that the quantity of adhesive can be deposited into the interlocking connection between the tongue ridge and the groove slot.

Abstract: To increase the strength and water resistance of a joint between two slabs of building materials, an interface for inserting bonding material between the joins of two interlocking members is used. The interface has two interlocking slabs, a tongue ridge, a groove slot, a fill channel, and a quantity of adhesive. The two interlocking slabs are the pieces of building material that are joined by the interface. To accomplish this, the tongue ridge connects to the first interlocking slabs, and the groove slot traverses into the second interlocking slab. The tongue ridge engages the groove slot to form an interlocking connection. The fill channel traverses through the tongue ridge along the length of the tongue ridge so that the quantity of adhesive can be deposited into the interlocking connection between the tongue ridge and the groove slot.