Start where you stand

DIY Guides to buffer rain above ground.

Pick one solution, install it in a weekend, and cut peak flows at your address. Each guide includes tools, cost ranges, and risk notes.

All DIY Guides

Clear steps, tools, and materials. Save pictures in the community page and we’ll showcase the best builds.

Rain Barrel
Easy ≈200–300 L per storm

Add a diverter to your downpipe, connect a barrel, and route overflow to soil. Works for balconies and small patios.

Blue-Green Roof (smart optional)
Medium €€ ≈60–100 L/m²

Lightweight sedum + water layer. Optional smart valve to make space before storms. Check structural load first.

Rain Garden
Medium €€ ≈500–1500 L

Direct runoff from paving into a planted bowl with engineered soil and overflow to drain.

Permeable Paving
Pro / Contractor €€€ Runoff ↓ strong

Replace tiles with permeable stones or gravel; add base layers and optional crates for storage.

Downpipe Splitter
Easy Overflow safe

Divert a portion of your downpipe into planters or a barrel, with a safe overflow back to drain.

Courtyard Retrofit
Medium €€ Tiles → green

Lift tiles, add soil mix and planting, route roof overflow into the bed with an underdrain.

Sponge Street (micro)
Pro / Contractor €€€ Peak shaving

Curb-cut inlets to pocket rain gardens; ideal for HOAs/VvEs coordinating with the city on small sections.

Cistern / Storage (buried)
Pro / Contractor €€€ Big buffer

Underground tank with controlled outlet; use when space above-ground is limited and access allows dig work.