What is blindside sheet waterproofing?

Blindside, or pre-applied, is a relatively new approach to. waterproofing that allows the membrane to be applied to. a backup wall, lagging, or even rock, and the concrete for. ADDITIONAL INFORMATION. the foundation walls poured against it.

What is a bonded waterproof membrane?

A waterproofing membrane is a layer of water-tight material that is laid onto a surface to prevent water leaks or damage. Waterproofing membranes generally consist of liquid applied or pre-formed sheet membranes.

What is elevator pit waterproofing?

Typically, elevator pits are waterproofed by applying a membrane, coating or bentonite based blankets under the slab and on the exterior of the pit walls. These acts as barriers on the surface of the concrete to prevent the pen- etration of water.

Is an elevator pit a wet location?

Yes, still not a wet location. to weather. The above does not describe an elevator pit.

What is blindside wall?

(Blindside is a positive-side application—meaning it goes on the outside or the soil side of the foundation wall. Negative side waterproofing is on the inside of the wall). Blindside, sometimes called pre-applied, is a term used to define the membrane type as well as the installation process.

What is bentonite waterproofing?

Bentonite waterproofing is an exterior waterproofing treatment that is supposed to work by forming a barrier between wet soil and the building foundation. Like any type of clay, bentonite absorbs moisture. Alternatively, some contractors will inject liquid bentonite mud into the soil around the foundation.

How long does a waterproof membrane last?

How long does waterproofing last? A quality waterproofing sheet membrane professionally installed should last for a very long time. Most waterproofing products come with a minimum 7 year warranty but correctly applied (pending on which membrane is chosen), a membrane should last much longer than that.

Which is the best way to waterproof an elevator pit?

Waterproofing Techniques Typically, elevator pits are waterproofed by applying a membrane, coating or bentonite based blankets under the slab and on the exterior of the pit walls. These acts as barriers on the surface of the concrete to prevent the pen-etration of water. Positive side, below grade waterproofing in elevator pits

Can a foundation be separated from an elevator pit?

When a structure’s foundation is separated from the elevator pit as shown above, the waterproofing is able to fully wrap the elevator pit using typical details. A slightly more complex case is a foundation system consisting of a grid of grade beams.

What do you need to know about elevator pits?

Elevator pits need to extend down beyond the sub-slab capillary break and water collection system, and may require below-grade waterproofing depending on geological conditions. Every state in the United States requires new or modernized elevators to pass inspection prior to usage.

Can a concrete pit be waterproofed with Earth?

Concrete placed against an earth form generally does not result in a suitable substrate to apply waterproofing. Therefore, this approach requires coordination in the contract documents to clearly define the substrate preparation requirements for the subcontractor.

What is blindside sheet waterproofing? Blindside, or pre-applied, is a relatively new approach to. waterproofing that allows the membrane to be applied to. a backup wall, lagging, or even rock, and the concrete for. ADDITIONAL INFORMATION. the foundation walls poured against it. What is a bonded waterproof membrane? A waterproofing membrane is a layer of…