Waterproofing vs. Damp Proofing: A Comprehensive Analysis

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Written by Warren Muschialli

In the construction industry, the potential for water ingress and water-related issues is a constant and essential consideration. Waterproofing and damp proofing are two crucial techniques that must be employed to protect buildings from the detrimental effects of water ingress.

Although often used as interchangeable terms, these methods differ significantly in their application and installation. In this article, we will explore the key distinctions between waterproofing and damp proofing, and highlight the advanced waterproofing and damp proofing products offered by Newton Waterproofing.

Waterproofing: Below-Ground Defence Against Water Ingress

Waterproofing is the process of creating a coherent strategy for preventing water from penetrating critical areas of a below-ground or partially retaining structure.

This is essential in areas where the risk is highest, such as basements and other earth-retaining structures where there is the risk of groundwater penetrating the structure. The goal is to achieve the desired internal environment as required by the client and in line with the intended end use of the space.

Damp Proofing: Managing Moisture in Above-Ground Areas

Above the ground, where water pressure cannot exist, damp proofing mainly addresses the movement of moisture within porous building materials in order to combat rising and penetrating damp. If an above-ground area is suffering from the effects of damp, then effective damp proofing is crucial for controlling and preventing the potentially detrimental effects, such as rot, mould growth and even structural damage.

Waterproofing Techniques and Materials:

• Type A (barrier) protection – Protects against water ingress by using barrier membranes applied either internally or externally to the structure. For example, the Newton HydroCoat and Newton HydroBond Systems
• Type B (structurally integral) protection – Ensures the structurally integral sealing of joints and protrusions to provide a watertight, reinforced concrete structure. For example, the Newton HydroTank System
• Type C (drained) protection – A combination of products that are internally applied to provide a maintainable cavity drain waterproofing system. For example, the Newton CDM System

Damp Proofing Techniques and Materials:

• Internal Damp Proof Membranes – High-quality membranes, such as those in the Newtonite System, are applied to internal walls to isolate the internal surface from dampness, ensuring that the wall and floor finishes will never be affected by capillary moisture or hygroscopic salts.
• Damp Proof Membranes (DPMs) – Either sheet membranes or liquid-applied DPMs that are used to isolate wall and floor finishes from damp substrates
• Damp Proof Courses (DPCs) – Installed between courses of brick or blockwork. approximately 150mm above ground level, DPCs are crucial for preventing capillary held moisture from permeating up through porous walls that are in contact with the ground
• Damp Proofing Coatings and Paints – Both external water-repellent wall coatings and internal anti-condensation paints can be employed to reduce penetrating damp and condensation issues, and so create drier and warmer walls

Waterproofing vs Damp Proofing

Understanding the difference between waterproofing and damp proofing is vital for employing the appropriate method to protect buildings from water-related issues.

Whilst waterproofing provides a defence against water ingress in below-ground areas, and is very much dependent on the desired internal environment, the method of construction, and the client’s expectations, damp proofing is specifically designed to combat the three main types of damp, as well as damp-related issues, in above-ground spaces.

Newton Waterproofing’s wide array of advanced products ensures that builders and property owners have access to top-tier solutions, enabling them to safeguard their structures effectively and maintain a dry, durable, and habitable environment.

How Can Newton Waterproofing Help You?

We are dedicated to providing high-quality waterproofing services throughout the UK, and our team of experienced professionals has the expertise to tackle even the most challenging projects. We adhere to industry standards and use proven methods, ensuring long-lasting results and peace of mind, so contact us today to get started.