How much overlap should sprinklers have?

Sprinklers should overlap by about 25% for even coverage. Without overlap, you get dry patches between sprinkler zones.

What type of sprinkler is best for a small lawn?

Oscillating sprinklers are best for rectangular lawns. Pop-up sprinklers suit smaller areas. Rotary sprinklers are good for medium lawns.

Place a tuna tin on the lawn and time how long it takes to fill 25mm. That is your weekly watering time, split into 2-3 sessions.

Usually yes, but hosepipe bans may restrict use during drought. Check your water company for current restrictions.

Sprinklers should overlap by 50-100% of their radius. Head-to-head spacing (each sprinkler reaches the next) gives the most even coverage.

Work out sprinkler placement and overlap for even lawn coverage.

Lawn Length

Lawn Width

Sprinkler Type

Effective coverage = Sprinkler coverage area × 75% (allowing for 25% overlap).

Sprinklers needed = Lawn area ÷ Effective coverage per sprinkler.

Typical coverage: Oscillating 200m², Rotary 300m², Pop-up 80m², Impulse 500m².

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Last updated: February 2026

All calculations are estimates based on standard gardening guidelines. Results may vary with soil conditions, climate, and plant varieties.