28/07/2026
TekDrain YKL 400 is a drainage and protection board manufactured from high-density polyethylene (HDPE), offering excellent resistance against root penetration and decay. The product protects foundation and retaining wall waterproofing systems against water and moisture while providing mechanical protection and efficient drainage through its studded structure.
By creating an air gap between the structure and the soil, TekDrain YKL 400 supports moisture balance, improves ventilation, and contributes to extending the service life of buildings.
TekDrain YKL 400 is a specially designed HDPE drainage board featuring a studded surface structure. The board acts as a protective buffer between the soil and the building structure, preventing direct contact between water and foundation walls.
The air layer created between the studs provides:
With a compressive strength of over 150 kN/m² and a durable structure, TekDrain YKL 400 is suitable for demanding underground and construction applications.
With a compressive strength above 150 kN/m², TekDrain YKL 400 provides effective protection against soil pressure and mechanical loads.
The air channels created between the studs allow water to flow safely away from the structure, reducing moisture accumulation.
The drainage board prevents mechanical damage to waterproofing membranes during backfilling operations.
The air gap between the studs helps maintain moisture balance and supports ventilation behind foundation walls.
The HDPE structure provides long-term resistance against:
The studded surface distributes vertical pressure evenly, protecting insulation and waterproofing layers.
The roll format enables quick and practical installation, especially on large construction surfaces.
Store horizontally or vertically in a dry area protected from direct sunlight and heavy loads.
Under proper storage conditions, the product maintains its performance indefinitely.
It is used for drainage and protection purposes in foundations, retaining walls, underground parking structures, basement waterproofing systems, and green roof applications.
According to the TS EN 826 standard, the compressive strength is above 150 kN/m².
The HDPE core is waterproof. The studded structure only provides controlled water drainage between the surface channels.
The studs should face toward the waterproofing surface to create an effective drainage gap.
TekDrain YKL 400 maintains its structural performance between -40°C and +80°C.
TekDrain YKL 400 combines mechanical protection and efficient drainage performance in a single solution, providing long-lasting protection and improved durability for building foundations, underground structures, and waterproofing systems.
