Parasols are almost always bought too small, and the reason is a simple measuring error that nearly everyone makes. People size the canopy to the table rather than to the people sitting around it, and the result is a parasol that shades the plates while everyone's shoulders cook. Add the British sun, which sits considerably lower in the sky than the Mediterranean one these products were designed around, and a correctly sized parasol on paper gives you about an hour of useful shade. This guide covers the sizing rule, the sun angle problem, base weight and siting. The full range is in our Balinese parasol collection.
Key takeaways
| Point | Details |
|---|---|
| Extend 50cm beyond the table on every side | Chairs pull out and shoulders sit beyond the table edge. Sizing to the table shades the plates only. |
| The British sun sits low | Shadows are long and oblique for most of the day, so a canopy centred overhead moves off the table within an hour. |
| A 2m parasol needs at least a 25kg base | It is a sail, and British gusts arrive without warning. |
| 1.5m suits two to four seats | 2m covers a six seat table or a lounger area. |
| Canvas outlasts cotton outdoors | Heavier, holds shape better, and stands repeated opening and closing over years. |
The sizing rule
A parasol should extend roughly 50cm beyond the edge of the table on every side. That sounds generous and it is the minimum rather than a comfortable margin.
The reason is straightforward once stated. People sit with their chairs pulled out from the table and their shoulders beyond the table edge. A canopy that stops at the table shades the food and leaves the diners in full sun, which is the opposite of the intention.
| Table | Diameter or length | Parasol needed |
|---|---|---|
| Bistro table, two seats | 60 to 70cm | 1.5m |
| Small round, four seats | 90 to 100cm | 1.5m minimum, 2m better |
| Rectangular, four to six seats | 150cm long | 2m |
| Round, six seats | 120 to 140cm | 2m |
| Lounger or seating area | Varies | 2m, positioned rather than centred |
Our 1.5m turquoise patio parasol covers the first two comfortably. The 2m pieces, including the 2m natural canvas patio parasol, the 2m turquoise patio parasol and the 2m orange patio parasol, handle everything larger.
Why the British sun changes the maths
This is the factor almost nobody accounts for and it matters more here than in the countries these parasols are designed for.
The sun in Britain sits at a considerably lower angle than in the Mediterranean or in Southeast Asia. Even at midsummer noon in southern England it is well short of overhead, and for most of the useful garden season it is lower still.
A low sun casts long, oblique shadows. A parasol centred directly over a table at one in the afternoon will have moved its shadow well off to one side by four, which is exactly when most people are actually sitting outside.
There are two workable responses. Size up, so there is enough canopy that an offset shadow still covers the table. Or accept moving the parasol through the afternoon, which a free standing base allows and a parasol through a table hole does not.
Most people who complain their parasol does not work have this problem rather than a sizing problem, and the fix is a bigger canopy or a movable base.
Base weight, which is not optional
A 2m parasol is a sail. That is not a figure of speech, it is a description of what a canopy on a pole does in moving air.
British gusts arrive without warning and frequently on days that are otherwise calm. A parasol going over damages the parasol, usually damages the table, and can injure someone. This is the one area of parasol ownership where cutting corners has consequences beyond disappointment.
- At least 25kg for a 2m free standing parasol, and more on an exposed site.
- Less is acceptable through a table hole, because the table provides lateral restraint, though the base still has to hold the pole steady.
- Buying a light base to save money is the commonest false economy in garden furniture and the cause of most parasol failures.
- Fillable bases with sand rather than water are more stable, since sand is denser and will not freeze or leak.
Where to site it
Three considerations beyond simply where the table is.
Prevailing wind comes from the south west across most of Britain. Some shelter on that side, from a wall, a hedge or the house itself, makes a considerable difference to how often you are closing the parasol in a hurry.
Avoid siting under a tree, which sounds counterintuitive since trees mean shade. Falling debris marks fabric, and sap is extremely difficult to remove from painted cotton or canvas without damaging the paint.
Consider the view from indoors. Britain offers perhaps twenty genuinely pleasant garden evenings a year, and for the rest of the season the garden is something you look at through glass. A parasol left open all summer becomes part of the view from the kitchen, which is worth thinking about before deciding it lives permanently in the middle of the lawn.
Canvas or cotton outdoors
Both are hand painted and they behave differently under weather.
Canvas is heavier and holds its shape better over years. It stands up to repeated opening and closing, and it is the more durable of the two outdoors. The 2m natural canvas patio parasol is the canvas option at 2m.
Cotton is lighter and takes colour more vividly, which is why the 2m turquoise patio parasol and the 2m orange patio parasol are the most striking pieces we sell for a garden. The trade off is that vivid colour also shows fading soonest, because it has further to fall.
If longevity is the priority, canvas. If appearance is, cotton. Both need the same routine to survive.
The routine that decides everything
Three habits, and together they are the difference between two seasons and six.
Close it when you are not under it. Ultraviolet is what fades hand painted fabric, and an open parasol in July takes full sun for eight hours whether anyone is sitting beneath it or not.
Never store it wet. Damp fabric folded tight grows mould, and mould on painted cotton does not come out. Open it to dry fully before putting it away.
Bring it in for winter. This is not a suggestion. A parasol left out from October to March in Britain is finished, regardless of what it is made of.
Bring that calm into your home with Rootandstill
Our Balinese parasol collection covers 1.5m and 2m outdoor parasols, hand painted in cotton and canvas, built with a structural frame for genuine use rather than display.
The 1.5m turquoise patio parasol suits a bistro or small round table. For a six seat table or a lounger area, the 2m natural canvas patio parasol is the durable canvas option and the 2m turquoise patio parasol and 2m orange patio parasol carry the strongest colour.
If you want the look indoors rather than shade outdoors, our indoor decorative parasol range carries 40cm decorative pieces designed for corners and hallways. For a garden focal point that needs no seasonal routine, our garden statue collection covers fibre cement pieces built to live outside permanently.
FAQ
What size parasol do I need?
One that extends roughly 50cm beyond the table edge on every side. A bistro table wants 1.5m, a four to six seat table wants 2m.
Why do parasols always seem too small?
Because people size to the table rather than to the people. Chairs pull out and shoulders sit beyond the table edge, so a canopy stopping at the table shades the food and not the diners.
How heavy should the base be?
At least 25kg for a 2m free standing parasol and more on an exposed site. Sand filled is better than water filled, since sand is denser and will not freeze.
Does the sun position matter in Britain?
Considerably. The British sun sits low, so shadows are long and oblique. A canopy centred overhead gives about an hour of useful shade unless you size up or move it through the afternoon.
Canvas or cotton for outdoors?
Canvas is heavier, holds shape better and lasts longer. Cotton takes colour more vividly and shows fading sooner.
