Pool System Build-Up
- 1 Concrete Substrate
- 2 Crack Repair (if required)
- 3 ACTFLEX FLEXPLUS
- 4 ACTFLEX HYDROPLUG
- 5 ACTFLEX AT MESH
- 6 ACTFLEX 988 CWP (2 Coats)
- 7 Tile Adhesive
- 8 Pool Finish
HiFlow Drainage Cell Roll
or 4 interest-free payments with
15 mm HDPE drainage sheet with bonded geotextile filter. Takes hydrostatic pressure off the membrane.
HIFLOW DRAINAGE CELL is an HDPE dimpled sheet with a non-woven geotextile filter bonded on. The dimples carry water to the drain and the filter keeps fines out. 15 m x 1.5 m roll.
What it's for
- Retaining walls, basement walls and underground car parks
- Planter boxes, green roofs and podium decks
Why waterproofers buy it
- Relieves hydrostatic pressure at the membrane face
- Bonded geotextile stops fines blinding the void
- Holds stormwater and releases it slowly
- Protects the membrane during backfill
Specs
15 mm thick. 22.5 m² roll, 37 kg. Compressive strength 250 kPa. Flow over 150 L/min/m (ASTM D4716). Allow measured area plus 20% for laps and waste. 10 year Forspec product warranty.
Not for
Waterproofing: the membrane under it does that. Lay it over a cured, flood-tested membrane, filter face to the soil, draining to a working outlet.
Relieves hydrostatic pressure at the waterproofing membrane face
Bonded non-woven geotextile filter prevents fines blinding the drainage void
Doubles as a protection layer over the membrane during backfill
7-Day Money BackGuarantee
Fast DispatchNext Business Day
Expert Advice(02) 8021 3517
Secure CheckoutSSL Encrypted
Get it
—
—
Pickup currently unavailable at The Waterproofing Shop
HiFlow Drainage Cell Roll
The Waterproofing Shop
22/872 Canterbury Road
Roselands NSW 2196
Australia
Product Details
How to Use
Technical Specifications
Product Files
HiFlow Drainage Cell Roll
Sale price$440.00
Frequently bought together
System Build-Up Guide
Correct application makes all the difference.
Retaining Wall System Build-Up
- 1 Concrete Substrate
- 2 Crack Repair (if required)
- 3 ACTFLEX MS PRO
- 4 ACTFLEX AT MESH
- 5 ACTFLEX 988 CWP (2 Coats)
- 6 Protection Board (Optional)
- 7 Drainage System
- 8 Backfill
Tank System Build-Up
- 1 Concrete Substrate
- 2 Crack Repair (if required)
- 3 ACTFLEX FLEXPLUS
- 4 ACTFLEX AT MESH
- 5 ACTFLEX 988 WMP (2 Coats)
- 6 Protective Coating (Optional)
- 7 Water
Technical overview
Key applications
- Retaining walls and basement walls
- Planter boxes and landscaped areas
- Green roofs and roof gardens
- Podium decks
- Underground car parks
- Protection layer over FORSPEC waterproofing membranes during backfill
- Any location where drainage and hydrostatic pressure relief are required behind or beneath a waterproofed structure
Surface suitability
- Cured FORSPEC waterproofing membrane (flood tested where required, inspected and signed off)
- Retaining walls and basement walls
- Podium decks
- Planter boxes and landscaped areas
- Green roofs and roof gardens
- Underground car parks
Not a waterproofing membrane - HIFLOW DRAINAGE CELL drains and protects, and the waterproofing duty belongs to the FORSPEC membrane beneath it. It must be laid over a fully cured, flood-tested and inspected waterproofing membrane, never over an uncured or untested one, and it must discharge to a functioning drainage line, because a drainage cell with no outlet becomes a reservoir against the structure. The geotextile filter face must be oriented towards the retained soil or growing medium; installed the wrong way round the cavity will blind with fines. Do not expose the geotextile face to contamination, mud or slurry during installation, and do not install over sharp projections, protruding fixings or debris that could puncture the membrane beneath. Flow capacity must be checked against the project rainfall intensity and catchment by the specifier, as the stated flow rate is a product property and not a drainage design. Do not exceed the compressive strength in service. Backfill must be placed and compacted so the cell is not displaced or crushed. It is not a structural layer and not a substitute for engineered subsoil drainage where that is specified. Install between +5C and +40C. Wear protective gloves, eye protection and protective clothing, use a sharp blade with a cutting board and cut away from the body, and apply the site confined-space entry procedure for below-ground work.
Technical Specifications
| Product Type | HDPE dimpled drainage sheet with bonded non-woven geotextile filter |
| Material | High-density polyethylene |
| Colour | White |
| Nominal Thickness | 15 mm |
| Compressive Strength | 250 kPa* |
| Flow Rate at Hydraulic Gradient i = 1.0 under 100 kPa | Greater than 150 L/min/m (ASTM D4716)* |
| Heat Resistance | 70C for 1.5 hours* |
| Roll Length | 15 m |
| Roll Width | 1.5 m |
| Roll Area | 22.5 m2 |
| Roll Weight | 37 kg |
| Lap Allowance | Approx. 10% of gross roll area* |
| Wastage Allowance | Approx. 10%* |
| Installation Temperature | +5C to +40C* |
| UV and Chemical Resistance | Resistant to UV radiation, chemicals and weathering* |
| Shelf Life | Indefinite when stored dry, shaded and clear of point loading* |
| Product Warranty | Ten (10) years from date of purchase, supply of product only |
| * Typical Forspec R&D characteristic values, no accredited test reports exist for this product | |
Real Projects. Real Results.
-
Before
After
Pool Renovation
Gold Coast, QLD
-
Before
After
Below Ground Retaining Wall
Sydney, NSW
-
Before
After
Concrete Water Tank
Perth, WA
-
Before
After
Commercial Podium
Melbourne, VIC
-
Before After
Swimming Pool Construction
Brisbane, QLD
Watch the install
Step-by-step from prep to top coat. Filmed on the tools, not in a studio.
The Waterproofing Shop?
We supply premium waterproofing products backed by expert advice, fast service and real-world experience.
100% AustralianOwned & Operated
30+ Years in theWaterproofing Industry
Thousands of Productsin Stock
Fast ShippingAustralia Wide
Expert TechnicalSupport
Frequently asked questions
-
What is HiFlow Drainage Cell used for?
CompatibilityHiFlow Drainage Cell is a dimpled HDPE sheet that provides sub-surface drainage and hydrostatic pressure relief behind retaining walls, planter boxes, podium decks, and green roofs. Water flows down between the dimples and out through the system.
-
Specifications?
Performance15mm thick by 1.5m wide by 15m long (22.5 m² per roll). White HDPE construction. 250 kPa compressive strength. Apply between 10-26°C ambient. Service temperature up to 70°C.
-
How is it installed?
InstallationLay the drainage cell over the cured waterproof membrane with mechanical or adhesive fixing per the substrate. The dimples face the wall/structure side. Functional immediately after backfill - water drains down through the channels.
-
Which membranes does it protect?
CompatibilityProtects Forspec liquid membranes (906 WPU, 929 HV/SL, 988 CWP) and sheet membranes (ACTFLEX 5000, 900S) from backfill damage and from being saturated with groundwater. Critical for retaining wall and below-grade waterproofing.
-
Why is drainage critical?
PerformanceSaturated soil exerts hydrostatic pressure on waterproofing membranes that can exceed the membrane's design pressure. Drainage cell relieves that pressure by giving water a path to escape - extends membrane service life significantly.