A chemical injection for rising damp is a method of creating a new damp-proof course (DPC) by injecting a special cream into the wall. This cream acts as a barrier, preventing moisture from rising from the ground into the walls of a building.
How Chemical Injection Works
Here's a breakdown of the process:
- Damp Proof Course (DPC): A DPC is a horizontal barrier in a wall designed to prevent moisture from rising. Traditional DPCs are often made of slate or plastic.
- Problem: Over time, traditional DPCs can fail, allowing moisture to rise through the brickwork – a condition known as rising damp.
- Chemical Injection Solution: Chemical injection offers a modern solution by creating a new DPC. It involves:
- Drilling holes along the mortar line of the wall.
- Injecting a specially formulated damp-proof cream or fluid into these holes.
- The cream or fluid spreads within the mortar, forming a continuous, water-repellent layer.
- Effective Barrier: This new layer acts as a barrier, preventing water from rising any higher in the wall, effectively creating a new DPC.
Advantages of Chemical Injection
- Less Disruptive: Compared to other methods, such as physical DPC replacement, chemical injection is typically less disruptive, as it does not require extensive building work.
- Cost-Effective: It can be a more cost-effective solution for treating rising damp, especially in older properties.
- Long-Lasting: When installed correctly, a chemical injection DPC can provide long-lasting protection against rising damp.
When is Chemical Injection Appropriate?
Chemical injection is a common and effective treatment when:
- You've identified rising damp in your property.
- The existing damp proof course has failed.
- A property lacks a damp-proof course.
- The property is built from brick or stone.
Summary of Chemical Injection for Rising Damp
| Feature | Description |
|---|---|
| Purpose | To create a new damp-proof course (DPC) to stop rising damp. |
| Method | Injecting a special cream or fluid into the mortar line of walls. |
| Barrier | Forms a water-repellent layer to prevent moisture from rising. |
| Effectiveness | Highly effective when applied correctly in suitable situations. |
| Reference: | Treating rising damp The best way to treat rising damp is by installing a new chemical damp proof course (DPC) through injection. A damp proof injection cream forms a new DPC that prevents water from rising up above the point of installation. |
In essence, chemical injection for rising damp is a practical, modern approach to create an effective damp-proof barrier and is the best way to treat rising damp.
