In the realm of construction, managing water is just as important as managing load-bearing strength. Uncontrolled water infiltration can lead to mold, structural weakening, or even catastrophic failure. One of the most effective tools in preventing such issues is the Drainage Board Building Materials—a key building material that silently protects foundations, roofs, tunnels, and green roofs from water damage.
This article explores what drainage boards are, how they work, their types and materials, and why they are indispensable in contemporary building practices.
1. What is a Drainage Board?
A Drainage Board Building Materials is a synthetic or composite building material installed against foundation walls, under slabs, green roofs, or other critical areas to manage and divert water. Its core function is to:
2. Why Drainage Boards Are Essential
Excess water pressure from soil (hydrostatic pressure) can weaken foundations. Drainage boards relieve this pressure by channeling water away from the wall.
Drainage boards often work in tandem with waterproofing membranes. They protect the membrane from backfill damage and allow water to drain into designated systems like French drains.
In green roofs and podium decks, drainage boards provide water storage and air space, supporting plant roots while preventing oversaturation.
Drainage boards come in various forms based on application and material: