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Dimple Boards

Dimple Boards Drain
Dimple Boards Drain

Dimple Boards

Dimple Boards are high-strength drainage and protection sheets designed to manage subsurface water and protect waterproofing systems in foundations, basements, retaining walls, and roofs. The dimpled structure creates an air gap that efficiently channels excess water away while relieving hydrostatic pressure against structures.

At Prime Terratech, a trusted dimple board manufacturer and supplier in India, we provide durable, eco-friendly drainage boards made from high-density polyethylene (HDPE). These boards ensure long-term protection of structures from water ingress and soil pressure, making them ideal for a wide range of civil and landscape applications.

Prime Terratech Dimple Boards are lightweight, easy to install, and compatible with geotextiles and waterproof membranes. Their robust design enhances building durability by providing efficient drainage and preventing structural dampness and corrosion.

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technical data sheet

Product Details

Prime Terratech Dimple Boards are made from UV-stabilized high-density polyethylene (HDPE) through a vacuum forming process that creates a continuous dimpled surface. These dimples form an air cavity between the structure and the soil, facilitating free water flow to the designated drainage outlet.

Our dimple protection and drainage boards are engineered for superior compressive strength, chemical resistance, and durability. When used with non-woven geotextiles, they act as a dual-layer drainage system — filtering and guiding water efficiently away from structures.

Dimple boards are suitable for foundation walls, retaining walls, roof gardens, tunnels, podium slabs, and landscape drainage systems, offering maintenance-free protection against moisture and pressure.

Why Choose our Dimple Boards

  • Efficient Drainage System – Creates continuous air and water flow channels.
  • High Compressive Strength – Withstands heavy soil and load pressure.
  • Protects Waterproofing Membrane – Prevents direct soil contact and puncture damage.
  • Chemical and Root Resistant – Ideal for long-term underground use.
  • Lightweight and Flexible – Easy to cut, handle, and install at site.
  • Compatible with Geotextiles – Can be used with filter fabric for enhanced performance.
  • Environmentally Safe – Made from recyclable HDPE materials.

Features

  • Material – High-Density Polyethylene (HDPE)
  • Dimple Height – 8 mm to 20 mm (customizable)
  • Excellent Drainage Capacity – Channels water efficiently away from the structure.
  • High Compressive Strength – Supports heavy overburden loads.
  • UV and Chemical Resistant – Withstands harsh environmental conditions.
  • Flexible and Lightweight – Easy installation without special tools.
  • Protection Layer – Safeguards waterproof membranes from mechanical damage.
  • Optional Geotextile Lamination – Acts as a filtration and drainage layer combined.

Benefits

  • Prevents water accumulation and seepage into building foundations.
  • Reduces hydrostatic pressure against retaining walls and basements.
  • Improves waterproofing system life and reliability.
  • Provides long-term structural protection in wet or clayey soils.
  • Ensures efficient drainage for roof gardens and podium slabs.
  • Eco-friendly and maintenance-free performance.

Specification

MaterialHigh-Density Polyethylene (HDPE)
Dimple Height8 mm – 20 mm
Sheet WidthUp to 3 m
Length10 m – 20 m (customized)
Compressive Strength≥ 250 kN/m²
Drainage Capacity3 – 8 L/m·s (depending on dimple height)
UV StabilizedYes
Chemical ResistanceExcellent
Root ResistanceYes
Optional LaminationNon-woven Geotextile (PP/PET)

Application

  • Basement and Foundation Wall Protection
  • Retaining Wall Drainage Systems
  • Roof Garden and Podium Deck Drainage
  • Tunnel and Subway Waterproofing Systems
  • Planter Box and Terrace Drainage
  • Landscape Drainage under Paving or Turf
  • Bridge Deck and Subgrade Protection

FAQ's

Q1: What is a dimple board used for?

A: Dimple boards are used to provide drainage and protection to underground waterproofing systems by channeling water away from the structure.

Q2: How does a dimple board work?

A: Its dimpled structure creates air gaps that allow water to flow freely toward designated drains, preventing water pressure buildup and seepage.

Q3: What materials are used in Prime Terratech dimple boards?

A: They are made from UV-stabilized high-density polyethylene (HDPE), offering excellent durability, strength, and chemical resistance.

Q4: Can dimple boards be used with geotextiles?

A: Yes, they can be laminated with non-woven geotextiles to act as a combined filtration and drainage layer.

Q5: Where can dimple boards be installed?

A: They are ideal for basements, retaining walls, tunnels, podium decks, roof gardens, and other below-ground or exposed drainage applications.

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