The phrase "brickwork to DPC" refers to the brickwork that is laid in relation to the Damp Proof Course (DPC) in a building's construction.
Understanding the Relationship
The DPC is a vital component that prevents rising damp, which is moisture from the ground moving up through the brickwork. It's a horizontal barrier, usually a thick plastic strip, placed within the brickwork.
Here's a breakdown of how brickwork relates to the DPC:
- DPC Placement: According to our reference, the DPC is installed "as a horizontal layer between two courses of brickwork". This means you'll find a layer of bricks below the DPC and another layer of bricks above it.
- Position Above Ground: The reference also notes that the DPC "should be a short distance above ground level". This ensures that ground water can't bypass the DPC.
- Material: The DPC, as mentioned, is typically a thick plastic strip in modern construction. Older materials could include Bituminous Felt, slate, and lead sheet.
- Function: The main purpose of the DPC within the brickwork is to prevent water from rising up and damaging the structure of the building. The brickwork below the DPC might be exposed to moisture from the ground, while the brickwork above it is protected.
Practical Implications
Here are some key practical points to consider:
- Correct Installation: Proper installation is crucial. The DPC must be continuous across the wall to effectively block moisture.
- Height: The correct height of the DPC above ground level varies depending on the local building regulations and site conditions.
- Bridging: It's important to prevent anything from 'bridging' the DPC, such as soil, render, or plants, which could allow water to travel above the barrier.
- Alternative Materials: Although modern DPCs are usually plastic, older buildings might have used different materials, each with its own lifespan and maintenance needs.
Example in Construction
Imagine a wall being built. The builders would first lay several courses (layers) of bricks. Then, they'd place the DPC on top of one of those courses, making sure it's level and continuous. Finally, they would continue to build brickwork above the DPC, making sure to maintain a distance between the ground level and the DPC.
| Component | Function |
|---|---|
| Brickwork Below DPC | Provides a base for the DPC, usually partially below ground level. |
| DPC | Prevents moisture rising from the ground into the brickwork above. |
| Brickwork Above DPC | The main structural wall, protected from rising damp. |
