Trade-Quality Guttering, Downpipes & Fittings for Reliable Drainage
High-Quality UPVC Building Plastics — Trusted by the Trade
At Capital Building Plastics, we supply a complete range of guttering, downpipes and fittings designed to provide reliable performance and a neat, professional finish on every project.
Our rainwater products are low-maintenance, weather-resistant and easy to install, making them ideal for both new build and refurbishment work. Sourced from trusted UK manufacturers, our range is available in a variety of profiles, sizes, colours and finishes to suit domestic and commercial applications.
Our Rainwater Product Range
Guttering
Choose from a complete range of gutter profiles and fittings designed to support efficient rainwater drainage across a wide variety of property types and roof sizes.
- Half round gutters
- Square line gutters
- Deep flow gutters
- Ogee gutters
- High-capacity gutter systems
- Matching fittings and accessories
Downpipes
Our downpipe systems are designed to deliver dependable water flow, durability and a clean, finished appearance. Suitable for residential and commercial applications, they help direct rainwater efficiently away from the building to reduce the risk of damp, surface erosion and water damage.
- Round downpipes
- Square downpipes
- High-capacity downpipes
- Downpipe connectors and sockets
- Downpipe adaptors and reducers
- Easy-fit components for straightforward installation
Visit Our Trade Counter
Need your products today? Visit our trade counter for same-day collection, helpful advice and competitive trade pricing across our rainwater range.