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Half round parasol: what to measure before you buy

Updated: 22.10.2026

You have a wall, a fence, or a balcony front, and a full circle will not sit against it. A half round parasol only works if the straight edge, the depth, and the height match that space. This page is the measurement lesson. The [Half parasol comparison](/hub/sun-shades/half-parasol) holds the four amazon.co.uk listings, with the prices and the fields that disagree. Prices below are the ones in those files. A qualifying purchase can earn us a commission at no extra cost to you. This is from the Products Compared editorial team. Nothing here is a lab test.

You have a wall, a fence, or a balcony front, and a full circle will not sit against it. A half round parasol only works if the straight edge, the depth, and the height match that space.

Our top picks

Pure Garden Pure Garden 9 ft half round

Best overall

Pure Garden Pure Garden 9 ft half round
8.2/10about £56.06
View offer
Angel Living Angel Living 270 cm half round

Preis-Tipp

Angel Living Angel Living 270 cm half round
7.2/10about £39.95
View offer
Garden Friend Garden Friend 2.7 m half parasol

Alternative

Garden Friend Garden Friend 2.7 m half parasol
6.9/10about £70.53
View offer
On this page
  1. 1.Straight edge, depth, and height
  2. 2.Pole and a half-round base
  3. 3.Crank, tilt, and a vent
  4. 4.UV and water claims

Straight edge, depth, and height

Start with the wall. The straight edge faces it, and the depth is how far the cloth reaches into the patio. A printed 2.7 m is usually that edge, not a full circle. Christow prints 2.7 m, a depth of 1.36 m, and a height of 2.4 m. Pure Garden prints 52 x 108 x 92 in: 108 in is the 9 ft edge, and 52 in is 132.1 cm. Angel Living prints 270 cm, a 265 x 132 bullet, and about 238 cm. Garden Friend prints 2.7 m with no depth or height. EASYmaxx prints 262 x 137 x 236 cm and also height 2.7 m in the title. The balcony half parasol page stays on the soffit.

Pole and a half-round base

The pole has to match a sleeve, and the base has to share the straight edge, or the cloth stands proud of the wall. Garden Friend prints 38 mm. Pure Garden prints 1.5 in, about 38 mm. Angel Living and EASYmaxx do not print a diameter. A round base can hold a pole and still leave a gap. The flat back of a half-round base sits flush. Angel Living says the base is not included and recommends a half-round base of at least 15 kg. Pure Garden's bullet says the base is not included, while the included-components line says Base. Weight is on the half parasol base and wind page.
Pure Garden Pure Garden 9 ft half round

Testsieger

Pure Garden Pure Garden 9 ft half round
8.2/10about £56.06
View offer

Crank, tilt, and a vent

A crank opens the cloth. It does not mean the pole shortens. Angel Living lists a crank and a manual tilt. Pure Garden lists a crank and a rotational tilt, and one review says tilt was not possible once it was attached. Garden Friend lists a crank in the contents and manual lift in the opening field, while a review says there is no tilt joint. EASYmaxx prints neither. Christow's clockwise-to-open direction is not printed on these four listings. Follow the sheet in the box. If loose plastic arrives in the crank, stop. None of the four prints a Beaufort number.

UV and water claims

Ultraviolet lines are seller claims unless a report is on the page. None of the four files has one. GOV.UK explains UPF for clothing under BS EN 13758. Only clothing at UPF 40 or above may carry the solar UV-protective label in BS EN 13758-2. Angel Living prints UPF30+. EASYmaxx prints 40+ UV, with protection misspelt. Angel Living says the polyester is water-repellent, not fully waterproof. Pure Garden says water resistant, and a review says light rain soaks through. The best half parasol page sorts the four by constraint.

Common questions

What does 2.7 m mean on a half parasol?
On these UK pages, 2.7 m is the straight edge, often called the diameter. It is not the depth and not a full circle of shade. Christow pairs 2.7 m with a depth of 1.36 m. Pure Garden's 9 ft line is the 108 in side. If a listing prints only 2.7 m, ask for the depth before you assume about 1.3 m.
Will a 2.4 m height fit under my balcony soffit?
Only if the clear height, including the base, is greater than the pole. Angel Living is about 238 cm, and UK reviews say you cannot alter it. Christow and Jack Stonehouse print about 2.4 m. EASYmaxx prints 236 cm and also 2.7 m in the title. Measure the soffit. Do not plan to cut the pole.
Is 38 mm the same as 1.5 inch?
1.5 inch is about 38 mm, so Garden Friend's 38 mm and Pure Garden's 1.5 in are the same class of pole. They are not a tested pair. A wider tube still needs its adaptor. Angel Living and EASYmaxx do not print a diameter, so measure those poles before you buy a sleeve.
Do I need a half-round base or will any base do?
Any base with the right sleeve can hold the pole up. Only a flat-backed half-round base lets the straight edge sit flush. A round base leaves a gap. Angel Living asks for a half-round base of at least 15 kg and does not include one.
Is UPF 30+ a UK clothing certificate?
No. The solar UV-protective label in BS EN 13758-2 is for clothing at UPF 40 or above. Angel Living's UPF30+ and EASYmaxx's 40+ UV have no test report in the files. Do not read them as a percentage of ultraviolet blocked.
Does water-resistant mean I can leave it up in rain?
No. Angel Living says water-repellent, not waterproof, and says to close it in rain and wind. A Pure Garden review says light rain soaks the cloth. Close and dry the canopy.
Why is one listing about £180 when others are about £40?
EASYmaxx is £181.76 in the file, at 3.3 kg, with 4.3 from 125 reviews. The others are £39.95, £56.06, and £70.53. The higher price does not add a printed pole, rib count, or cloth weight. It is not evidence of a better frame.

Related pages

How to put up a half parasol

Half parasol

Balcony half parasol: depth, soffit and your lease

Half parasol base weight: pole, footprint and wind

Best half parasol: four listings, each with a limit

Sources

Public UK sources and the amazon.co.uk listings compared on this page. Updated 22.10.2026.

  1. GOV.UK ultraviolet radiation FAQ (retrieved 22.10.2026)
  2. General Product Safety Regulations 2005 (retrieved 22.10.2026)
  3. Consumer Rights Act 2015, section 9 (retrieved 22.10.2026)
  4. Which? faulty product advice (retrieved 22.10.2026)
  5. Met Office Beaufort scale (retrieved 22.10.2026)
  6. Greater Cambridge external shading (retrieved 22.10.2026)
  7. BSI BS EN 581-1:2017 (retrieved 22.10.2026)
  8. Brollies and Parasols usage guidance (retrieved 22.10.2026)