Capture Sediment Before It Enters The Drainage Network

Sediment Drain Guards
Manufactured in Britain from high-strength non-woven polypropylene geotextile, each guard incorporates a sediment catchment basin, securing loops and overflow openings to help maintain drainage during storm conditions.
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Practical Protection At The Point Of Drainage

Sediment Drain Guards are positioned beneath drainage grates to capture silt, sediment and site debris before they enter the surface-water network. Run-off passes through the geotextile while heavier material settles within the integrated catchment basin, allowing the guard to be inspected, emptied and reused.

The system provides a simple local control for construction sites, highways, industrial estates and quarries. Overflow holes within the catchment basin help maintain flow during periods of heavier rainfall, while the securing loops keep the guard correctly positioned beneath the grate.

Worker placing sandbag by roadside drainImage
KEY PRODUCT FEATURES

Developed For Effective Drain Protection

Murlac Sediment Drain Guards provide simple, effective protection beneath drainage grates. The catchment basin retains sediment and debris, while overflow openings help maintain flow during heavier rainfall.

Integrated Catchment Basin

Retains sediment and debris beneath the grate for controlled removal and disposal.

Storm Overflow Openings

Integrated openings provide an additional flow route during periods of heavier rainfall.

High-Strength Geotextile

Needle-punched polypropylene fabric combines sediment capture with rapid water passage.

Hydrocarbon Absorption

The standard fabric absorbs hydrocarbons, with additional absorbent material available where required.

Simple Installation

Securing loops allow the guard to be restrained beneath standard drainage grates.

Empty And Reuse

The guard can be removed, emptied and returned to service where its condition allows.
COMMON APPLICATIONS
Where Sediment Drain Guards Are Used

Drain Guards can provide temporary or longer-term protection wherever surface run-off may carry sediment, debris or pollutants into the drainage network. Product selection and inspection frequency should reflect the drainage arrangement and expected sediment load.

Worker in high-vis opening roadside manhole cover
Construction Sites
Protect gullies from soil, aggregate and construction debris carried by surface-water run-off.
Worker placing sandbag by roadside drain
Highways & Car Parks

Capture sediment entering roadside drains, paved areas and temporary traffic-management zones.

Worker placing sandbag by roadside drain
Industrial Estates

Reduce the movement of site debris and pollutants into shared surface-water drainage systems.

Worker in high-vis opening roadside manhole cover
Quarries & Aggregate Sites

Manage sediment-laden run-off around processing areas, access roads and material stockpiles.

Manufactured In Britain For Practical Site Use

MANUFACTURED BY MURLAC

Murlac manufactures Sediment Drain Guards from high-strength, needle-punched non-woven polypropylene geotextile. The guard combines a filtration surface with an integrated catchment basin, securing loops, lifting handles and overflow details within a single reusable unit.

Manufacturing the guards in Britain allows Murlac to control material selection, stitching and finished quality. Three standard sizes are published for common drainage grates, with each model incorporating a 250 × 450 mm catchment basin.

TECHNICAL INFORMATION

Drain Guard Construction & Performance

Technical Item Product Information
Manufacture Produced in Britain by Murlac.
Primary Material High-strength needle-punched non-woven polypropylene geotextile.
Material Weight Published specification of 400 gsm.
Pore Opening Uniform published pore opening of 90 microns.
Water Permeability Published performance of 85 litres/sec/m².
Configuration Geotextile drain cover with integrated sediment catchment basin, securing loops and lifting handles.
Catchment Basin 250 × 450 mm across the published standard product range.
Sediment Capacity Published capture capacity of up to 0.2 m³.
Overflow Provision Openings within the catchment basin help maintain flow during storm conditions.
Hydrocarbon Control Standard fabric provides hydrocarbon absorption; an additional absorbent layer can be incorporated.
Use Protection of surface-water gullies and drains from sediment, debris and associated site pollution.
Maintenance Inspect regularly and empty or exchange the guard when loaded with sediment and debris.
TYPICAL INSTALLATION SEQUENCE

Step One

Measure the drainage opening and inspect the grate, chamber and surrounding surface condition.
TYPICAL INSTALLATION SEQUENCE

Step Two

Select a guard with an upper section larger than the drainage opening being protected.
TYPICAL INSTALLATION SEQUENCE

Step Three

Remove the grate using the appropriate site lifting, access and traffic-management controls.
TYPICAL INSTALLATION SEQUENCE

Step Four

Position the catchment basin inside the drain and arrange the geotextile without restrictive folds.
TYPICAL INSTALLATION SEQUENCE

Step Five

Secure the loops through the grate or retain the material between the grate and chamber wall.
TYPICAL INSTALLATION SEQUENCE

Step Six

Replace the grate and confirm that the guard, loops and overflow openings remain correctly positioned.
TYPICAL INSTALLATION SEQUENCE

Step Seven

Inspect regularly and after heavy rainfall, emptying or exchanging the guard when it becomes loaded.

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Need To Protect Your Site Drainage?

DISCUSS YOUR REQUIREMENTS
Provide the grate dimensions, site type, expected sediment load and any known hydrocarbon risk. Murlac can recommend an appropriate Drain Guard size and absorbency arrangement.
Speak To Our Drain Guard Team