Drainage Correction

Decorative Landscapes
Titusville, FL 32780

Down spouts into 4 inch solid corrugated drain pipe
Reasons for routing gutter runoff into underground drain pipe away from building.
- Drainage correction.
- Eliminate tripping hazards along walks, patios and drives.
Down spout adapters are available for both 2x3 inch and 3x4 inch down spouts.
Down spout adapters fit to 4 inch corrugated solid drain pipe.

image of downspouts connected to drain tile

Surface Drainage Correction: A re-grade usually involves removing existing earth around the building and replacing it with our drainage correction material. Many times we will have to install new window wells for the new grade. Our drainage correction material is a crushed limestone product. The fine material in this product packs tightly forming a water repellant non-absorbing layer. This material forms good surface drainage correction and is ideal for re-grading around the house. A re-grade with drainage correction material is topped with 2 layers poly sheeting and river rock ground cover, and solves most surface drainage problems around the house. Down spouts hookup to drain pipe. The drain pipe is terminated in the back yard with a drain pipe emitter designed to allow water to exit and keep out debris and critters.


Downspout adapters designed to fit between existing home gutters and 4 inch corrugated drain pipe.

2X3 inch DOWNSPOUT ADAPTER to 4 inch corrugated drain pipe
downspout adater for drain pipe


3x4 inch down spout to 4 inch corrugated drain pipe.
downspout adater for drain pipe


It is important to install the drain pipe at the bottom of a trench of adequate depth. A 16 inch depth trench is very adequate. 4 inch corrugated pipe installed too shallow will work to the surface.. Compact carefully while backfilling the trench. You want to prevent the drain pipe from rising during backfill. We use 4 inch drain pipe as opposed to 3 inch pipe. 4 inch is larger and should not clog.
Important! Debris guards over gutters need be in place. You do not want leaves and sticks getting into the drain pipe.
Tip: Heating wire is available to install into the drain pipe for cold areas.


4-Inch Pop-Up Drainage Emitter 4-Inch Pop-Up Drainage Emitter


Couplers are used to connect drain pipe sections and the emitter. Larger tape is available for sealing the connections. While drain pipe tape is necessary, it provide are more robust connection.
4 inch Drain Pipe Coupler Adapter, 4-Inch Pop-Up Drainage Emitter

Landscaping Drain Pipe Adapters are available as T and Y connections. This allows joining multiple down spouts, drain fields etc to a single emitter area. T / Y Corrugated Coupler, Connects to 3-Inch and 4-Inch Pipe
Flex-Drain ADP53702 Flexible T  Y Landscaping Drain Pipe Adapter
Flex-Drain 51110 Flexible/Expandable Landscaping Drain Pipe, Solid, 4-Inch by 25-Feet
4 inch solid expandable drain pipe


The 4 inch corrugated solid (non perforated) pipe is used for down spout into drain pipe. The object is to route water away from the house. This pipe is available as 10 feet sections up to 250 feet rolls. Home Depot, Lowes, Menards, Landscape Supply carry the large sections. 25 feet sections area available from online sources. These are typically lighter and expandable.
4-Inch Pop-Up Drainage Emitter The down spout adapters shown above will connect directly to the pipe. The emitter requires a coupling.

Flex-Drain 51110 Flexible/Expandable Landscaping Drain Pipe, Solid, 4-Inch by 25-Feet
4 inch solid expandable drain pipe



image of drain tile installation


Drain tile installed properly allows drainage where a surface drainage needs an assist.
The dirt from the trench is placed on 4'x8' plywood sheets. This protects the lawn and eases backfill.
-Note: Approximately 1/4 of the excavated fill from a 16 inch depth trench will need be hauled out of the area.
Drain pipe here is 4 inch perforated in a silt sock.


closeup image of drain tile installation

This drain pipe install is placed into a 16 inch depth trench lined with comercial grade labdscape fabric. The trench is then backfilled with a 6 inch depth pea gravel. The fabric is folded over before finishing backfill with excavated topsoil. New sod is installed on finish grade where applicable. If placing drain pipe in planters, make a map. It will save time if any planting or other excavating takes place.
Note: Pea gravel (3/8 inch gravel) provides a much mmore robust drain environment for the 4 inch corrugated, perforated drain puipe in a silt sock. This approach requires half or more excavated fill be removed from the area as unused. Hint: Do not forget the silt sock. The silt sock is available already on the drain pipe, and prevents the pipe from clogging after years of silt. I see so much perforated drain pipe full of dirt and not functioning.


image of French drain construction.
The French drain approach allows a flat area to drain off. A trench is excavated, 4 inch corrugated perforated drain pipe in a silt sock is placed in the trench. The trench is backfilled with drain gravel. Drain gravel can be any rock without fines. For instance crushed limestone is a base material and contains fines from crushing. This will not work as drain gravel. Pea rock is 3/8 inch gravel. 3/4 inch gravel and 1 1/2 inch gravel, (also known as river stone landscape rock) are commonly used. Parts of the country may not have regular gravel available. Any rock without crusher fines will work. Function of the rock is to hold the drain pipe in place at bottom of trench, to allow water into trench, and make it look like a dry stream bed for cosmetics. If drainage correction for water getting into the house is an issue, many times we will line the trench with 6 mill or heavier black poly.
image of French drain
Drain tile and a French Drain combined add a natural look for the smaller garden yard with a flat grade.
Here we were able to dry up a wet location and add interest.
More photos of this job can be seen on the paver walks page at the Decorative Landscapes website.
We did not have room on this job, but where space is available; this water path can lead to a rain garden. A rain garden is a small holding pond which provides a place for at least some water to collect and soak into the ground, rather than all run off onto the street.

Flex-Drain 51510 Flexible/Expandable Landscaping Drain Pipe, Perforated with Filter Sock, 4-Inch by 25-Feet 4-Inch perforated drain pipe in silt sock


Rain Gardens provide an opportunity for a variety of growing conditions along the sides and bottom.
image of rain garden
A rain garden can be constructed simply by excavating a shallow area 4 to 16 inches in depth, covering with landscape fabric, optional rock ground cover. Mulch will float away. Planting is the same as any other. Vertical sides can be used with natural some wall rock. We like to have the entrance shallow. Normally we are routing water from other areas with perforated drain pipe underground. Where a grade already exists, a slight re-grade may assist water towards the rain garden without the need for drain tile.




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Drainage Correction Solutions

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