The average cost to install downspouts is $30 to $75 per downspout. Total downspout replacement costs $220 to $625 for 4 to 5 downspouts. Adding new downspouts costs $2 to $4 per linear foot installed. Burying downspouts with a drainage system costs $150 to $350 each.
The installation costs depend on the type, material, and length of downspouts you need, including accessories like hangers and elbows. The national average cost range to install downspouts is between $15 and $28 per linear foot.
Cast iron and copper guttering repairs cost significantly more, at around £50 to £65 per metre. Replacing a downpipe is typically more expensive. uPVC downpipe replacement costs around £22 per metre, while cast iron downpipes cost between £70 to £80 per metre to replace.
To get the best draining results from your gutters, we recommend having at least one downspout for 50 feet, and two 2 downspouts for over 50 feet.
Above-ground extensions typically range from $10 to $50 depending on the material and length. Underground extensions, which often require trenching, can cost significantly more, ranging from $200 to $2,000.
You can expect that gutter installation process to last between one and five hours. If you have a complex and lengthy gutter system, it could take more time, but typically no longer than one day. The best gutter repair services know how to balance speed with quality, so it's okay if an installation spans two days.
To ensure proper coverage and protection, bury your downspout extension at least 12 inches deep. This depth helps protect the pipe from surface activities and ensures efficient water drainage.
Size of the Gutter Drainage Area: As a rule of thumb, one downspout should be placed every 25-35 linear feet of guttering. Depending on the local climate and rainfall intensity, some homeowners may need more downspouts. Many homeowners add extra downspouts to boost the drainage capacity of their gutters.
If at all possible, the downspout should end in an elbow and extension that directs the water 5 to 6 feet away from your foundation. However, make sure that it does not extend onto your neighbor's property. The extension should be at a 30 degree or more angle in relation to the ground.
Calculating Downspouts Based on Gutter Length
The general rule of thumb is one downspout for every 20-30 feet of gutter. This may vary depending on several factors such as the pitch of your roof, the volume of rainfall in your area, and the capacity of your gutters.
The average gutter installation cost is about $1,171, depending on home size and other factors, though gutter installation prices can range from $625 to $1,717. Gutters and downspouts are the unsung heroes of your home. They work hard to protect against flood-related damage to your roof and foundation.
Gutter and Downpipe Replacement Cost
A typical gutter replacement cost $65 per lineal metre plus GST. We also replace downpipes. The cost for downpipe replacement ranges between $250 to $350 per downpipe plus GST.
We'll custom-order the products for your project as soon as you complete your purchase. Once your materials are ready and the permit is pulled, we'll schedule your installation. We'll deliver the materials directly to the jobsite. Your project team will manage all gutter installation details from start to finish.
Typical labour costs for drainage system installation: Hourly Rate for Tradespeople: £15 - £30 per hour. Total Labour Cost Estimate for Medium-sized Projects: £600 - £1,400.
Choosing the wrong downspout pipe, like a perforated pipe, defeats the purpose and allows water to leach through the line near the home's foundation. Instead, homeowners should use a solid corrugated pipe when burying downspouts. Solid pipe is the best option because it's flexible and can be run in one piece.
Round downspouts will cost more than a rectangular downspout, in part because the installation is more labor intensive and the parts cost more to produce. Available in copper, pre-finished aluminum colors, galvanized and zinc. Round downspouts are available in 3 inch and 4-inch diameters.
To keep it easy, we recommend that you install one downspout every 20-40 feet of gutter. This will ensure that you are taking the proper precautions to defend against potential water damage to your house. The average home has 2-3 downspouts.
A basic downspout extension costs $5 to $20 on average for most above-ground types. Prices vary according to the type, material quality, and length. Many downspout extensions come in 2.0' to 4.5' long sections that can attach together to make them longer.
If we have to sum it up in a single rule, gutters need a downspout around every 30 to 40 feet. For most homes, this means installing spouts at either end of a gutter section.
Downspout drains are usually buried from 12 to 48 inches below the ground to better conceal the drainage system.
A common guideline is that you need one downspout per 40' span of gutter for proper drainage, but this is usually not enough for a 2”x3” downspout. A homeowner should also consider the size of the roof which will factor into how much water is going into the gutter.
A great downspout location is placing your downspouts along the side of the house, near the corners of the home. This allows them to blend into the building more while funneling water away from the home. Downspouts should not discharge water that might pool close to the house or foundation.
If durability and long-term protection are your priorities, aluminum or galvanized steel extensions are the best choices. For ease of installation and adjustability, flexible or roll-out extensions are highly recommended.
All drainage pipes should be placed on the gravel bed in the trench. PVC drainpipe, if used, should be placed in the trench with the holes facing down.
Installing a buried downspout drainage system is a great way to manage rainwater runoff and keep it away from your foundation. By minimizing the risk of flooding and soil erosion, buried downspouts offer a reliable, low-maintenance alternative to surface-level options.