Top Damp Proofing Products Here are some popular options: Injection Creams: Dryzone, Safeguard, and Permagard are well-regarded brands. Damp Proof Course Materials: Products from companies like Newton Waterproofing and Wykamol are known for their reliability.
The primary protection method for damp proofing residential and commercial properties is an injected Damp Proof Course (DPC). This form of protection provides a long-term solution against moisture decay.
Most methods for protecting against damp externally are relatively simple DIY tasks, such as applying facade cream or installing a new damp proof course. If you're already suffering from a damp exterior wall, it's important to fix whatever it is that's causing the damp.
Common materials used for damp proofing include bitumen, polyethylene sheeting, and plastic membranes. Bitumen is applied to the surface of concrete and masonry walls to create a waterproof seal.
Damp proofing prevents rising moisture from the soil. Waterproofing, on the other hand, stops any moisture and liquids from penetrating your structure. Additionally, waterproofing can withstand hydrostatic pressure, whereas damp proofing is not effective for water under pressure.
POLYURETHANE
Polyurethane is considered one of the best waterproofing materials. It can be applied seamlessly and penetrates the surface deeply and evenly. Thus, the polyurethane membrane will fill in even the finest cracks in concrete, reducing its water absorbency capacity.
An injection of a damp proof course is a common solution for smaller, localised issues, costing £50 to £80 per linear metre. However, for more extensive problems, complete damp proofing of an average-sized property can cost £2,500 to £5,000.
The DPC protects the property against moisture rising from the ground. Estimation of DPC is measured in square meters of area. Most commonly used material for damp proofing is Bitumen.
Most properties which exist today should have a damp-proof course which is evident at a minimum of 150 mm above ground level. This may appear as a mortar course with a bitumen or plastic DPC sheet poking through.
Damp proofing primarily addresses rising dampness, which occurs when water from the ground is drawn up through walls and floors via capillary action. Damp proofing is typically applied to the exterior walls of a structure, often during construction, to create a barrier that stops moisture from entering the building.
Without the help of a professional, there is no guarantee these will work. In general, whether you can damp proof your home yourself will depend on the type of damp and the cause. For example, condensation can be easily dealt with by adding ventilation.
The good news is that damp proofing can last for 20 to 30 years or more when done well. Modern buildings have a damp-proof course included as part of the building process. This is a physical barrier within the building walls that prevents water ingress.
Top tips on finding reliable damp experts
Find out how long they've been in the business and what they specialise in. Contact at least three damp surveyors. Contact multiple damp surveyors to get like-for-like quotes on your damp problems. Check their qualifications and training.
Purpose: Damp proofing is designed to protect against moisture that originates from the ground, such as rising damp or condensation. It's typically used in the early stages of construction or renovation to create a barrier that stops moisture from seeping through walls.
Membrane Damp Proof Course
This method is well-suited for both new construction and older buildings, providing a reliable and long-lasting solution to dampness issues. Membrane DPCs offer excellent durability and resistance to water ingress, making them suitable for a wide range of building types and environments.
Damp Proofing vs. Waterproofing Distinction: Damp proofing focuses on preventing ground moisture from rising through a building's walls or floor, typically using a damp-proof course. In contrast, waterproofing aims to block all forms of water, including vapour, withstand hydrostatic pressure, and combat soil moisture.
Materials widely used for damp proofing include: Flexible materials like butyl rubber, hot bitumen (asphalt), plastic sheets, bituminous felts, sheets of lead, copper, etc. Semi-rigid materials like mastic asphalt.
Home insurance doesn't normally cover damp or mould but there are other ways insurance can help. Mostly it can help tackle some of the problems that cause damp and mould in the first place. Find out more about damp and how insurance can help in this guide.
Silicone sealant is the best waterproofing material for your home. It is an adhesive liquid that looks like a gel and can maintain its flexibility and balance at both high and low temperatures. It is resistant to other chemicals, moisture, and weather thus minimising the chance of failing.
Polyurethane coatings are highly durable, solvent-based products that create a strong, water-resistant barrier. They are known for their exceptional resistance to wear, chemicals, and UV rays, making them a long-lasting option for deck waterproofing. Polyurethane is suitable for wood decks as well as concrete decks.