groundworks drainage

Basement damp is a serious problem that can cause structural damage, health issues due to mould, and loss of usable space. It is important to treat it promptly to prevent further damage and costly repair bills. 

One of the most effective solutions is internal waterproofing, which can be performed on an existing property or during new construction. This process is known as tanking. 

Basement waterproofing delta membrane 

Basement waterproofing delta membrane: One way to help keep water out of basement walls is with a dimple mat, or delta membrane. This product is a sheet of high-density polyethylene combining recycled and virgin material studded with 5/16-inch tall dimples that can be applied to foundation walls. It creates an air gap that eliminates hydrostatic pressure against the wall and allows water to run down the concrete footing and away from the wall. 

Another popular option for waterproofing a basement is the use of a cavity drainage system. This system uses a series of internally or externally dimpled membranes, as well as perimeter drainage channels and hidden sump pumps to control groundwater ingress and evacuate water to a drainage point. This method of waterproofing is perfect for new build construction, as well as existing renovations. 

The most reliable basement waterproofing systems include a combination of different methods, tailored to specific conditions and site requirements. Professional waterproofing contractors can assess a property and recommend the best solution for its unique environment. 

In addition to waterproofing a basement, a professional contractor can also install a damp proof course and a vapor barrier. In his Wingnut Real-World Tests, GBA technical director Peter Yost tested three interior moisture control products: UGL Drylok Extreme, Koster NB1 Grey, and Xypex Concentrate. The results were impressive. All three of the systems performed well, but Xypex had the best overall performance, and was most effective against a range of potential problems. 

Basement WaterProofing Cavity Drain Systems 

Basement waterproofing cavity drain: A cavity drain system, also known as a Type C waterproofing system, creates a controlled drainage path for water that penetrates the foundation walls or floor. Here’s a breakdown of its key components: 

• Drainage Membrane: A high-quality, water-resistant membrane is installed on the interior walls and floor of your basement. This membrane features a dimpled or studded pattern, creating a cavity between the membrane and the foundation. 
• Drain Channels: A network of channels is installed at the base of the foundation walls, collecting any water that seeps through the walls or floor. 
• Sump Pump: A sump pump is placed within a pit at the lowest point in the drainage system. This pump automatically activates when the water level reaches a certain point, efficiently pumping the collected water away from your basement, typically discharging it to a drain line or exterior drainage system. 

Benefits of Cavity Drain Systems 

• Proactive Water Management: Unlike traditional waterproofing methods that simply act as a barrier, cavity drain systems actively collect and remove water before it can cause damage. 
• Long-Term Solution: These systems are built to last, offering a durable and reliable solution for long-term basement dryness. 
• Adaptability: Cavity drain systems can be installed in various basements, regardless of the foundation type (concrete, block, etc.). 
• Reduced Maintenance: Once installed, these systems require minimal maintenance, needing only periodic inspection and cleaning of the sump pump. 
• Improved Basement Environment: By eliminating moisture, cavity drain systems help prevent mold growth and create a healthier, more comfortable basement space. 

Investing in a Dry Basement 

Basement waterproofing with a cavity drain system is a wise investment that protects your home’s structural integrity and promotes a healthier living environment. By actively managing water intrusion, these systems offer peace of mind and safeguard your basement for years to come. If you’re facing basement moisture problems, consider consulting a foundation waterproofing professional to discuss the suitability of a cavity drain system for your specific needs. 

Basement waterproofing London 

Basement waterproofing London: Any structure below ground level is exposed to water pressure from all sides – and left untreated, this can cause surface dampness on walls and floors as well as potential flooding. Fortunately, there are many ways to prevent water ingress and protect your property from damp and other damage. The most effective way is to waterproof your basement or cellar at the time of construction. This is a relatively simple process that can be carried out by any damp proofing company that follows British Standard Building Regulations. 

A basement that is not properly waterproofed can become a damp, insecure area that is difficult to use. It can also be the source of black mould that not only looks unsightly but can cause health problems if inhaled. This is because black mould spores are known to cause asthma and other respiratory conditions in some people. 

The best option is to get a basement tanking London system in place during the building process, as this is an in-situ solution that is much more cost effective than retrofitting it to an existing property. The system involves installing internal membranes and a system of drainage channels and pumps, which manages any water ingress into the basement and diverts it away from living areas. This is often referred to as a CDM or Cavity Drain Membrane system. 

Final Words 

Most homeowners understand the importance of waterproofing their basement. They know that dampness can damage their valuables and cause a multitude of health problems. But they might not realise the impact that it can have on their home’s value. Homes that have been damaged by water ingress tend to sell for 25% less than those that are dry. 

This is because damp leads to mould and mildew that not only makes your property unsightly but also dangerous for your health. Mould and mildew spores can be inhaled and can cause respiratory problems. It is also hard on masonry and is difficult to clean. So, if you’ve got any signs of dampness or flooding, it is essential that you call in the experts to get it fixed as soon as possible. 

There are various methods of basement waterproofing, but the most popular is called tanking. This is done from the outside of the property and involves a membrane that wraps around the walls before concrete is poured, creating a sort of water-tight ‘tank’. This method is very effective but is more suitable for new constructions and cannot be used in older buildings. 

Another method of basement waterproofing is a pump-out system. These are more suitable for existing properties and involve a series of drains that are connected to a pump to remove the excess water. This method is more cost-effective than tanking, but it is not as effective. Lastly, there are injection systems that can be used to fix cracks and leaks. These can include epoxy crack injections and hydrophilic polyurethane injections.