Drop Inlet Protection

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Drop Inlet Protection Products for Construction

Drop inlet protection devices prevent sediment, debris and pollutants from entering the stormwater system.

These grates exist at the surface level and convey water to the drainage system.

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Silt Saver Dome frame, without filter
Reusable
Inlet Sentry product picture
Easy Maintenance
Dandy Sack for drop inlet protection
Below Grate Filtration
Dandy Pop proteting a drop inlet
High Visibility
Compost Filter Sock protects drop inlet
Multi-Purpose

Drop Inlet Protection Solutions

There are many different ways you can protect drop inlets. Explore our drop inlet protection products to find a solution that works best for you.

Dandy Pop proteting a drop inlet

Dandy Pop

The Dandy Pop is a tent-like drop inlet protection device. This unique product sits on top of the inlet and fully encloses the grate.

The Dandy Pop is made from high visibility orange monofilament geotextile fabric.

If properly maintained, the Dandy Pop can be reused on multiple construction projects.

To find the size you need, measure the length and width of your grate.

Size
30″ x 30″
32″ x 32″
36″ x 36″
40″ x 40″
48″ x 48″
Dandy Pops are custom made to fit most grates. If you don’t see the size you need, contact our sales team with your grate dimensions.

Pop open the Dandy Pop.

Remove the grate from the inlet, slip it into the Dandy Pop’s pouch and seal the Velcro pouch.

Return the Dandy Pop to the inlet.

Inspect the Dandy Pop after major rain events.

Remove any sediment that has accumulated on or near the Dandy Pop. Check the Dandy Pop’s containment area and remove any sediment build up.

Dandy Pop Specification
Dandy Products Brochure
Dandy Pop Flyer
VDOT Approved for Inlet Protection

Dandy Sack for drop inlet protection

Dandy Sack

The Dandy Sack is a drop inlet protection device that hangs below the grate.

As runoff flows into the storm drain, the Dandy Sack collects debris and filters sediment laden runoff.

Unlike other drop inlet protection products, the Dandy Sack can be driven over by cars and equipment.

SizeSizeSize
15″ x 15″32″ x 32″36″ x 48″
24″ x 24″36″ x 30″40″ x 40″
24″ x 36″36″ x 36″48″ x 24″
24″ x 48″36″ x 40″48″ x 48″
30″ x 30″
Dandy Sacks are custom made to fit most grates. If you don’t see the size you need, contact our sales team with your drop inlet’s dimensions.

Remove the grate from the drop inlet.

Attach the Dandy Sack to the grate with the Velcro straps.

Return the grate with the attached Dandy Sack to the drop inlet.

The Dandy Sack can easily be removed, cleaned and replaced.

Inspect it periodically and after major rain events.

If the sack is 1/3 full of sediment, remove the Dandy Sack and grate using the lifting straps.

Empty the sediment and replace the Dandy Sack and grate to the storm inlet.

Dandy Sack Specification
Dandy Products Brochure
Virginia Department of Transportation Approved Materials List – List. 59

Inlet Sentry product picture

Inlet Sentry

The Inlet Sentry is custom made exclusively for Colonial Construction Materials.

This storm drain inlet protection device sits on top of the drop inlet in order to control overflow. The donut-top is wrapped in nonwoven geotextile fabric. This unique design captures debris before it can flow into the storm system.

SizeSize
24″ x 24″36″ x 36″
30″ x 30″42″ x 42″
32″ x 32″48″ x 48″
The Inlet Sentry is custom made to fit most grates. If you don’t see the size you need, contact our sales team with your drop inlet’s dimensions.

Remove the drop inlet grate and place it inside the Inlet Sentry’s contaminant pouch.

Secure the grate within the Inlet Sentry using the elastic bands.

Place the grate and device in the inlet opening.

Inspect the Inlet Sentry periodically, especially after major rain events.

Remove sediment and debris from Inlet Sentry.

Inlet Sentry Specification
Dandy Products Brochure

Compost Filter Sock installed for drop inlet protection

Compost Filter Sock

Compost Filter Sock is a sediment control product that can installed for curb and drop inlet protection.

Filter sock is filled with 100% recycled wood chips. The wood chips filter sediment laden runoff as it passes through the filter sock.

Compost Filter Sock is wrapped multifilament polypropylene, photodegradable mesh with 1/8” opening pore size. The mesh’s opening size allows runoff to filter through the net while still retaining the filter media within the filter sock. 

SizePieces Per PalletWeight
8″ x 200′1/Pallet1650 pounds
8″ x 10′18/Pallet1650 pounds
12″ x 110′1/Pallet1650 pounds
12″ x 10′10/Pallet1700 pounds
18″ x 55′1/Pallet1750 pounds
Backfill material and wood stakes included with each pallet

Wrap the Compost Filter Sock around the perimeter of the drop inlet.

Overlap 2 feet of filter sock and secure the ends using zip ties or tie wire.

In some applications, Oak Stakes may be required to secure the Compost Filter Sock in place.

Inspect the Compost Filter Sock after major rain events and periodically in between rain events.

If the filter sock has been punctured and the filter material is flowing out of the wattle, repair or replace the Compost Filter Sock with a new wattle.

If the filter sock has been punctured but not compromised, replacement may not be necessary but you should monitor the Compost Filter Sock carefully for further damage.

In many applications, Compost Filter Sock filter material can remain on site after final closeout. If the Compost Filter Sock is to remain on sock, cut the mesh and spread the filter material across the ground away from the inlets.

Compost Filter Sock Specification
Compost Filter Sock Plan Sheet Details
Diamond Sock Inlet Protection Application Drawing
Compost Filter Sock Brochure
Virginia Department of Transportation Approved Materials List – List. 59
Installation Guidelines

Silt Saver Dome frame, without filter

Silt Saver Dome

The Silt Saver Dome is a reusable drop inlet protection device that features a two-part frame and filter system. It is ideal for multi-phased construction projects that need enduring drop inlet protection.

The Silt Saver Dome is manufactured in Round and Square shapes. The dome’s frame is made of durable HMWPE (high molecular weight polyethylene).

The frame is covered with a nonwoven geotextile fabric filter that has built in pockets at the base. Fill these pockets with aggregate to weight the Silt Saver Dome in place.

Dome ShapeSize
Square62.25″ x 62.25″ x 27.5″
Round61.5″ Diameter, 31.5″ Tall

Clear debris away from the area surrounding the drop inlet. Make sure that the area surrounding the inlet is level and stable.

Place the Silt Save Dome frame on top of the grate. Place the filter on top of the dome.

Fill the bags with stone or sand.

Domes must be inspected within 24 hours of a major rainfall and at least daily during prolonged rainfall. Any required repairs should be made immediately.

If more than 50% of the dome is covered in silt, remove silt from the filter while being careful not to damage the dome materials. Flush the dome filter out to remove fine silt particles.

If the filter has been damaged or become ineffective prior to the end of the expected filter life, promptly replace the filter.

Inspect the filter’s pockets for damage and displaced stones. If the stone has been washed out or displaced, promptly clean out the pockets and replace the stone as needed.

Sediment deposits should be removed after each storm event. Deposits should be removed when they reach approximately one half the height of the black/gray filter fabric.

Dome filters should last more than 12 months unless exposed to regular severe weather or harsh work environments. If the filter has faded due to persistent UV exposure or been damaged from debris/ working conditions prior to the expected filter life, replace the filter.

Square Silt Saver Dome Specification
Round Silt Saver Dome Specification
VDOT Approved for Inlet Protection

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We’ll provide you a quote for inlet protection as well as any other storm water products you may need .

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Compost filter sock for inlet protection

Want to compare curb and drop inlet protection?

Read Our Inlet Protection Product Guide

This guide compares designs, applications and costs for curb inlet and drop inlet protection products to help you find the right solution for your project.

Read the Guide