Downpipes: Everything You Need to Know!
The rainy season can cause issues with your downpipes, such as drain blockages, land erosion, or mould growth.
To prevent these problems, downpipes have been designed to work alongside your gutters, effectively directing rainwater away from your home.
In this guide, we explain everything about downpipes, their types, maintenance, and essential considerations. Let’s take a closer look.
What Is a Downpipe?
A downpipe, also known as a waterspout, drainpipe, roof drainpipe, or leader, is responsible for carrying rainwater from the gutters on the roof to the ground. It prevents water from splashing or dripping down the building, reducing the risk of structural damage.
Downpipes are typically installed vertically, extending down to ground level, though they can also be routed at specific angles to avoid obstacles. Their primary function is to divert water away from the building’s foundation. Many downpipes have a slight bend of about 70 degrees at the end to channel water into a drain or sewer. Some homeowners also add decorative heads to enhance their appearance.
Without a downpipe, fascia boards are the first part of your home to suffer water damage, leading to rot that can spread to the roof rafters. Proper downpipe installation ensures water is effectively diverted away from your home’s foundation.
Types of Downpipes
There are various types of downpipes available, and while aesthetics are important, functionality and suitability should be prioritised. A guttering specialist can guide you in selecting the best option for your home.
Rectangular Downpipe
The most commonly used type, rectangular downpipes, work well with K-style gutters. They come in different colours and materials, with either a crimped exterior or a smooth finish. The crimped version is more prevalent. Standard sizes are 10 feet in length, but custom sizes can be arranged.
Bi-feed Downpipes
Ideal for gutter intersections, bi-feed downpipes allow two gutters to connect to a single downpipe through angled connections. This prevents the need for multiple downpipes next to each other.
Flexible Downpipes
Unlike rigid downpipes, flexible downpipes can be adjusted in different positions to extend their reach. They are often used as extensions to existing downpipes.
Rain Chains
Rain chains function like downpipes but have a decorative appearance. Typically made of metal, they enhance the aesthetic appeal of a home. However, they may not be suitable for areas with heavy rainfall, so professional advice is recommended before installation.
Round Downpipes
Available in crimped, corrugated, or smooth finishes, round downpipes are designed for round or semi-round gutters. The most common type is black uPVC half-round downpipes, though other colours are available.
Cost of Downpipes
Downpipes vary in cost depending on material, style, and length. The size of your home and the number of gutters and downpipes required also influence the price. For the best appearance, ensure your downpipe material matches your guttering.
uPVC Downpipes
Commonly used with uPVC gutters, these downpipes are primarily rectangular but can also be flexible. They perform well in moderate climates but may become brittle in extreme cold or soften in excessive heat. They are easy to maintain and clean.
Aluminium Downpipes
Aluminium downpipes are frequently used on commercial properties. Available in rectangular and round styles with various colour options, they are custom-made to fit specific requirements. While they are long-lasting, they can be prone to denting in hail-prone areas and require more cleaning than uPVC.
Galvanised Steel Downpipes
Stronger and more durable than aluminium, galvanised steel downpipes are resistant to dents and rust, making them a good choice for rainy or stormy regions. They are typically white and available in rectangular or round shapes.
Copper Downpipes
If your gutters are made of copper, matching copper downpipes provide the best aesthetic and functional choice. Copper resists corrosion over time, making it a long-lasting, premium option, though it is also one of the most expensive.
Maintaining Downpipes
Proper maintenance is crucial to ensure your downpipes function effectively. Here are some key maintenance tips:
- Regular Cleaning: Keep your gutters and downpipes clear of leaves, sticks, and debris to allow water to flow freely.
- Installing Gutter Guards: While they can help reduce debris buildup, gutter guards also require regular maintenance. Consult a professional to determine if they are right for your home.
- Extending the Downpipe: Ensure your downpipe is long enough to direct water away from your home’s foundation, especially if your garden slopes towards the house.
- Repairing Sagging Gutters: If your gutters are sagging, address the issue promptly to prevent leaks and water damage.
Downpipe Blockages
Blockages occur when debris such as leaves, twigs, or dirt accumulates in the gutter and downpipe. Regular cleaning and preventive measures, like gutter balloons, can help reduce clogs.
Signs of a Blocked Downpipe:
- Overflowing Gutters: If gutters overflow during normal rainfall, the downpipe may be clogged.
- Leaking Seams or Joints: Blockages near joints or seams can cause leaks due to increased pressure.
- Weak Runoff: A weak flow of water during rain may indicate a clog. Tapping the downpipe can help identify blockages by detecting a different sound in clogged sections.
When Do You Need a Downpipe Repair?
Regular inspections and maintenance of gutters and downpipes help prevent severe water damage. If you suspect an issue, consult a professional to assess and repair any problems promptly.
When selecting and installing downpipes, consider your local climate, potential drainage issues, and material longevity. Proper installation and maintenance will protect your home from water damage.
For professional downpipe advice, gutter cleaning, gutter repair, or roof repair, call 0800 098 4130 today for a free, no-obligation quote!
Need advice from the downpipe professionals?Can call today on 0800 098 4130 for a free no obligation quote!
