Garden Pond Edgings: Paving, Grass, Planting, Timber & Beaches

Finishing Pool Edges for Beauty & Longevity

Pool edges make or break the feature aesthetically and affect structural longevity. Poor edging, especially on lined pools, causes numerous problems. Many traditional and innovative options exist.

Compatible Edging

Edging must suit the pool style. Formal pools suit paving/coping stones if the edge is level. Informal pools look wrong with paving all around — use it only at the front viewing area, vegetation elsewhere. Paving reduces lawn wear at natural standing points. Wildlife pools need planted/grassed edges (hard materials look alien), though grass is hardest to maintain convincingly.

Paving

Works with any construction if pool and surrounds are level. Lay slabs on 2.5 cm (1 in) mortar bed (5:1 sand:cement, stiff but wet). Bed 2–3 slabs at a time. Overhang pool edge by 5 cm (2 in) to hide construction and protect liner from UV. Level each slab in both planes. Point joints with mortar, avoiding water contamination and sealing to prevent lime leaching.

Grass Edge

Suits reflective, still-water pools acting as landscape focal points. Maintenance issues: grass clippings in water, lawn feed/weedkiller seepage. Need minimum 5 cm (2 in) soil depth over pool edge (10 cm / 4 in better) to prevent drying. If turf contacts water and pool is topped up, capillary action keeps grass healthy — but diligence needed in summer.

Planted Edge

Best for informal pools. Use rocks to form a barrier, secure liner, overhang water to hide construction. Modest, narrow flat rocks ideal — retain soil, disguised by tumbling foliage. Good soil prep with organic matter is vital. Limited soil depth often means dry summer conditions — choose boisterous rock garden plants. Fill behind rocks with rich mix, plant, add second rock layer if desired. Alternatively, lay paving slabs with soil pockets; plants soften angular lines. Bed slabs on mortar if walked upon.

Using Timber

Versatile, especially with decking/causeways. If water level flush with ground: concrete surround, bolt solid timber edge, trap liner between timber sections with plating joints (screws don't penetrate liner). If timber mostly exposed: similar but screws through face (above water level).

Bricks

Superb for formal pools if done well. Use only engineering/outdoor decorative bricks (frost-resistant). Plan early for a rim during excavation. Bed on mortar, butter joints (1 cm / 3/8 in), keep uniform, point carefully. No mortar in water.

The Beach

Popular for wildlife gardens — bird bathing, hedgehog escape. Simple: trap liner between two brick/stone rows, cover with cobbles/pebbles. Economical but not wear-resistant. For foot traffic: shallow concrete footing on liner, low brick wall, trap liner behind, bank concrete against it, cover with cobbles/pebbles.

Pebble Beaches

For simple pebble beach in low-traffic area: trap liner between two brick/stone rows, cover with cobbles/pebbles. Economical but not durable. For heavy traffic: concrete footing on liner, low wall trapping liner, bank concrete, cover with cobbles/pebbles.