Comparison RPE vs HDPE Pond Liner: How the Two Materials Compare
How a reinforced polyethylene (RPE) pond liner compares with HDPE: construction, seaming, durability and which material suits which size of project.
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Technical resources & guides
Installation guides, material comparisons, standards and price guidance from the SIGMA Geosynthetics team — to help you specify, compare and install the right geosynthetic for your project.
Comparison 
Guide Pond Liner Underlayment: Why You Need It and How to Choose the Weight
Why a pond liner and underlay work as a pair, how to pick nonwoven fabric weight for pond underlayment, and when a sandy subgrade lets you skip it.
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Guide Geobag Size Guide: Choosing Dimensions, Fabric and Fill Level
How geobag size is set per project, choosing woven vs nonwoven fabric, and how fill level differs between shoreline and dewatering use.
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Guide Geotube for Marine Structures: Breakwaters, Groynes and Shoreline Protection
How geotube is used as a marine geotube core for breakwaters, groynes and revetments, how it compares with dredging, and how it is filled and finished.
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Guide Turbidity Curtain Installation: Anchoring, Skirt Depth and Type Selection
How to install a floating turbidity barrier: anchoring and ballast, matching skirt depth to water depth, and choosing between Type 1, 2 and 3.
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Guide Silt Fence Installation: Trenching, Post Spacing and Maintenance
How to install a silt fence correctly: trench depth, post spacing for supported and unsupported lines, when to use wire-backed fabric, and upkeep.
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Guide Landfill Liner System Explained: Layers, Materials and Design
How a landfill liner system works layer by layer: primary HDPE geomembrane, secondary GCL composite, geonet leachate collection and the cap.
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Guide Drainage mat and anti-slip matting for industrial floors: an HDPE dimple mat guide
HDPE drainage mat explained: how the dimpled core moves standing water off a floor while the raised studs hold traction.
Read guide Guide Geotube dewatering: how it works and where it earns its cost
Geotube dewatering pumps slurry into a woven geotextile tube, lets the water filter out through the fabric, and leaves compacted solids behind.
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Comparison Geocell vs geogrid: which one actually reinforces your ground
Geocell vs geogrid isn't a choice between better and worse.
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Guide Dimpled Drainage Membrane: How It Works and Where to Use It
How a dimpled drainage membrane works, and why the air gap matters more than the sheet itself.
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Comparison GCL vs HDPE Geomembrane: When to Use Each (and When to Use Both)
GCL or HDPE geomembrane? Sodium bentonite self-heals under cover but can't stand exposed; HDPE is impermeable but won't seal a puncture.
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Guide HDPE geomembrane lifespan: how long a liner actually lasts
HDPE geomembrane service life runs from about 20 years exposed to well over 50 years buried under soil or water. What actually shortens it.
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Guide Geomembrane welding methods and seam testing: hot-wedge, extrusion, air, vacuum, peel
How to weld HDPE geomembrane with hot-wedge and extrusion welders, then prove the seam: air-pressure test, vacuum box test, destructive peel and shear.
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Guide Installing a Root Barrier: Trees, Bamboo and Foundations Done Right
How to install a root barrier that actually stops roots: trench depth, HDPE panel thickness, joining panels without gaps, and backfill.
Read guide Guide How to Choose Geotextile Weight (GSM/oz) for Drainage, Separation and Filtration
How to pick geotextile weight in GSM or oz/yd² for separation, filtration and drainage jobs.
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Comparison Needle-punched vs spunbond vs thermally bonded nonwoven geotextile
Not every non woven geo fabric is made the same way.
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Guide HDPE double wall corrugated (DWC) pipe: sizes, ring stiffness and installation
What a DWC pipe actually is, the size range from 100mm to 1200mm, SN4 vs SN8 ring stiffness, and where it's used.
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Pricing Pond liner size and cost: how to calculate what you need
How to size a pond liner from your pond's dimensions and depth, plus what actually drives pond liner cost.
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Guide Koi Pond Liner: How to Pick the Right Material for Fish Safety and Long Life
A practical guide to choosing a koi pond liner: HDPE vs LLDPE vs EPDM, fish-safe plastics, and UV resistance.
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Guide Honeycomb Gravel Grid for Driveways and Patios: Why the Cell Shape Matters
Why hexagonal cells outperform square grids for gravel driveways and patios, and how honeycomb geometry spreads load and drains water.
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Comparison Gravel Grid vs Geocell: Which Ground Stabilizer Do You Need
Gravel grid vs geocell, plain and honest: gravel grid for flat driveways and parking, geocell for slopes, soft subgrade and heavy traffic.
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Guide Gravel Grid Installation Guide for Driveways, Patios and Paths
How to plan a gravel grid installation for driveways, patios and paths: base prep, membrane, laying pattern, fill and compaction, with a comparison table.
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Guide How to Line a Pond: Step-by-Step Guide
How to line a pond the way it lasts: prepare the subgrade, lay a geotextile cushion, install and weld the liner, then anchor and plant the edge.
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Guide Wrapping a drainage pipe in geotextile: French drain filter design done right
Why a French drain's perforated pipe gets wrapped in a nonwoven geotextile filter, and when you still need gravel.
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Guide Geocell ground stabilization: road base, slope erosion control and grass parking
How geocell (cellular confinement) stabilizes a soft road base, holds fill on a slope and turns a parking area into grass pavers.
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Standards Geotextile standards: tensile strength, sampling and acceptance testing
How a geotextile spec ties tensile strength, CBR puncture, sampling and acceptance to ASTM and GRI test methods.
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Guide Shrimp and fish pond HDPE liner: how to install it and what it costs
How to install an HDPE pond liner for shrimp and fish ponds, and what drives the price.
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Standards Geotextile standards for road embankments: ASTM, GRI and IS codes
The international standards behind a road-embankment geotextile spec.
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Pricing HDPE geomembrane price by thickness (0.5–2.0 mm)
HDPE geomembrane price scales almost linearly with thickness.
Read guide Guide How to lay geotextile and install wick drains (PVD)
Field guide to wick drain installation over a geotextile blanket for soft-ground treatment.
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Pricing Geotextile price guide: what really sets the fabric cost
Geotextile fabric price tracks two things: GSM (weight) and strength class (kN/m or TS).
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Guide How to lay geotextile fabric: installation method and construction drawing
How to lay geotextile fabric for road construction and drainage: subgrade prep, overlaps, seams, anchoring and backfill.
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Guide Vacuum preloading with PVD: consolidating soft ground without a tall surcharge
Vacuum preloading uses suction through wick drains instead of a heavy surcharge embankment.
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Guide Soft ground improvement methods compared: PVD, sand piles, bamboo piles, vacuum
PVD, sand piles, bamboo piles or vacuum consolidation.
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Guide Soft soil treatment with wick drains (PVD): how it works
Wick drains (PVD) cut soft-clay settlement that would take years down to months.
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Comparison HDPE vs PVC geomembrane: which pond liner should you use
HDPE vs PVC geomembrane for ponds and containment: chemical resistance, UV life, flexibility and cost compared.
Read guide Comparison Geotextile vs geomembrane: what is the difference
Geomembrane vs geotextile comes down to one thing: a geotextile is permeable and filters or reinforces soil; a geomembrane is impermeable and stops water.
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Comparison Woven vs non-woven geotextile fabric: which one to choose
Woven vs non-woven geotextile fabric solve opposite problems: woven reinforces and separates, non-woven filters and drains.
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Guide How to choose HDPE geomembrane thickness (0.5–2.0 mm)
Pick HDPE geomembrane thickness by the job: 0.5 mm for small ponds, 1.0 mm for reservoirs, 1.5 mm for landfill and containment.
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Pricing Geogrid price guide: what actually sets the cost, and how to compare quotes
Geogrid price is set by polymer, strength grade, weight per square metre, roll size and how many square metres fit a container.
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Guide Geogrid slope stabilization and erosion control: what reinforces, what protects
A geogrid reinforced slope stands steeper than the soil alone allows.
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Guide Geogrid retaining wall: how reinforced walls work and how they are built
A geogrid reinforced retaining wall works as a mass, not as a face.
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Guide Geogrid for roads: subgrade stabilization and base reinforcement
How geogrid soil stabilization works under a road: aggregate interlock, thinner base courses and rut control.
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Comparison Geogrid vs geotextile vs geonet: which one does your job
Four geosynthetics, four different functions: geogrid reinforces, geotextile separates and filters, geonet drains, geocell confines.
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Guide Geogrid types explained: biaxial, uniaxial, fiberglass, PET and steel-plastic
The five geogrid types in one place — sorted by load direction and by material (PP, HDPE, glass fibre, PET, steel-plastic).
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