How to choose the right damp proofing products

Are you struggling with dampness in your home or building? Damp can be a major problem, leading to damage and health issues if left unchecked. Damp proofing products can provide an effective solution, but how do you choose the right products for your specific needs?

This guide will provide you with all the information you need to select the appropriate damp proofing products for your specific situation. From identifying the type of damp you are dealing with to choosing the right products and applying them correctly, we’ve got you covered.

Understanding Damp

Before you start selecting damp proofing products, it’s essential to understand what you’re dealing with. There are three main types of damp:

  1. Rising damp: This occurs when water from the ground rises up through the walls of a building, leading to damp patches and mould growth.

  2. Penetrating damp: This is caused by water seeping through walls or roofs due to damage or poor Maintenance, often resulting in damp patches and staining.

  3. Condensation: This is caused by excess moisture in the air, resulting in dampness on walls, ceilings, and windows.

Identifying which type of damp you have is crucial to selecting the appropriate damp proofing products and methods.

Choosing Damp Proofing Products

Once you’ve identified the type of damp you’re dealing with, it’s time to choose the right products. Here are some of the most common damp proofing products and their uses:

1. Damp proof course (DPC)

A DPC is a barrier installed between the ground and the walls of a building to prevent rising damp. It’s typically made of plastic or asphalt and is installed during construction. If you have an older building, you may need to install a new DPC to prevent rising damp.

2. Damp proof membrane (DPM)

A DPM is a barrier that’s installed over a concrete floor to prevent moisture from seeping in. If you’re experiencing dampness in your basement or on the ground floor of your building, a DPM may be an effective solution.

3. Waterproofing paint

Waterproofing paint is a type of paint that contains special additives to prevent water from seeping through walls. It’s often used in areas with high levels of moisture, such as bathrooms and kitchens.

4. Damp proof plaster

Damp proof plaster is a type of plaster that contains water-resistant materials, making it an effective solution for areas prone to dampness. It’s often used in bathrooms and other areas with high levels of moisture.

5. Cavity wall insulation

Cavity wall insulation involves injecting insulating material into the gap between the two layers of a cavity wall. This can improve insulation and reduce the risk of condensation and dampness inside the building.

There are many other damp proofing products available, so it’s essential to consult with a professional before making your selection.

Applying Damp Proofing Products

Once you’ve chosen the right products, it’s essential to apply them correctly to ensure maximum effectiveness. Here are some tips for applying damp proofing products:

  1. Follow manufacturer instructions carefully and use the appropriate safety equipment.
  2. Ensure the area to be treated is clean and free of debris.
  3. Remove any existing damp or mould before application.
  4. Allow sufficient drying time before applying subsequent layers or finishing work.

It’s also important to note that some damp proofing products require professional installation. If you’re unsure about how to apply the products you choose, consult with a professional installer.

Frequently Asked Questions (FAQs)

Q: Can I use damp proofing products to fix any type of damp?

A: No, it’s essential to identify the type of damp you’re dealing with before selecting damp proofing products. Using the wrong product can make the problem worse or be ineffective.

Q: How long do damp proofing products last?

A: The lifespan of damp proofing products depends on several factors, including the type of product, the quality of installation, and the severity of the damp problem. Generally, most products have a lifespan of several years or longer.

Q: Can I apply damp proofing products myself?

A: Some damp proofing products can be applied by DIYers, but others require professional installation. It’s important to consult with a professional if you’re unsure about how to apply the products you choose.


Dampness in homes and buildings can be a significant problem, leading to damage and health issues if left unchecked. Selecting the appropriate damp proofing products for your specific needs is a crucial step in resolving damp problems. By understanding the type of damp you’re dealing with, choosing the right products, and applying them correctly, you can effectively protect your home or building from dampness. Remember to consult with a professional if you’re unsure about any aspect of the process.

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