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What size gutter brush

Updated: 23 October 2026

You are at a plastic eaves gutter with a tape, trying to decide what size gutter brush to order before the next leaf fall. The measurement that matters is the inside width, then the metres of run, then whether the tiles will hold the roll. A hedgehog is a bristled roll on a wire core, usually sold as about 4 m, and one roll is one length. This page stops at those three checks. The ranked amazon.co.uk listings sit on the [gutter brush comparison](/hub/diy-supplies/gutter-brush). We did not measure your gutter. If you buy through our links, we may earn a commission at no extra cost to you.

You are at a plastic eaves gutter with a tape, trying to decide what size gutter brush to order before the next leaf fall.

Our top picks

Homion Homion 4 m roll

Best overall

Homion Homion 4 m roll
7.7/10about £10.15
View offer
Optimal Products Optimal Products 4 m roll

Rank 2

Optimal Products Optimal Products 4 m roll
7.9/10about £11.99
View offer
ZYBUX ZYBUX 4 metre brush

Alternative

ZYBUX ZYBUX 4 metre brush
7.5/10about £16.95
View offer
On this page
  1. 1.What you are measuring
  2. 2.How many metres to order
  3. 3.Clips, ties, and profiles
  4. 4.What this page will not size

What you are measuring

The figure to write down is the inside width of the channel, taken at a bracket and again near the outlet. Hedgehog’s product guide uses a worked example: a gutter that measures about 90 mm inside takes a 100 mm brush, with no more than about 5 mm of gap on each side. A wider gap lets leaves drop beside the core. A brush that will not sit down rides up, and the tile nose cannot pin it. FloPlast’s own GutterBrush, code GB4, is 4 m and 105 mm on the maker’s page. That trade brush is not an ASIN in our table, so 105 mm is not the size of the amazon.co.uk rolls. None of the kept rolls is 150 mm. Deepflow and ogee still need the ruler. Once the roll is chosen, laying it is on how to fit a gutter brush.

How many metres to order

One 4 m roll covers one run. Add each eaves length you will actually fill, then allow for joins. A front and a rear are often two rolls. Hedgehog’s guide says you leave about 50 mm of core when you cut, hook the wires, and re-twist the end. Tape the roll when it arrives. Single reviews in our files report short 4 m rolls: one Homion review measured a roll 12 cm under 4 m, and one ZYBUX review says the brush came up 15 inches short of a 4 m gutter. Those are single reports.
Homion Homion 4 m roll

Testsieger

Homion Homion 4 m roll
7.7/10about £10.15
View offer

Clips, ties, and profiles

A brush that fits can still leave the gutter. On a pitched roof with a decent tile overhang, the bristles sit slightly proud and the tile nose is the first fixing. Hedgehog’s guide and the Angels Plastics clip sheet both treat that as the ordinary case. The second fixing is a clip or a cable tie, and none of the boxes in this capture include them. Homion’s included-components line says brush only. ZYBUX lists stainless steel, which matches the core. The spacing is two sourced figures, not an average. Hedgehog’s guide says about every 1 m where a tie is needed. The Angels Plastics sheet says about every 2 m, and it draws the cases: protruding tiles often need no clip, while a low-hung gutter, a short tile nose, and a flat roof do. A cast-iron gutter is outside those plastic clip sheets. On a windy gable, buy the clips with the roll.

What this page will not size

A 150 mm gutter, a valley, and a box gutter behind a parapet sit outside these rolls. The brush is for broad leaves in a gutter you have already cleared. Hedgehog’s guarantee excludes silt and seedlings, and it still expects a clean where trees and moss shed into the gutter. BDC Magazine in May 2023 reported a brush cutting a stated 120 litres per metre baseline to 60. That is the magazine’s account, not a BRE paper we hold, and it is not Building Regulations approval. If the gutter already overflows in a normal shower, a brush does not make Table 2 larger. Moss, needles, and a mesh cover are the other fork, on gutter brush or mesh guard. When the inside width, the taped length, and the clip decision are written down, use the comparison to pick a roll whose title matches those three numbers.

Common questions

Will a 100 mm brush fit Deepflow or ogee?
Only if the inside width you measure still matches the brush. Homion’s bullets name Deepflow, Classic, and ogee alongside half-round at 100 mm. ZYBUX’s bullets say 100 mm to 116 mm internal. Those are listing claims. A deeper profile can leave a gap under a brush that looked right on a half-round next door.
How do I allow for cutting and joining?
Hedgehog’s guide says leave about 50 mm of wire when you cut, hook the two cores, and re-twist so the join does not spring open. A run just under 4 m can use a whole roll once that overrun is included. Do the same at a stop-end. Lay the brush only after the gutter is clear of silt.
What if the title says 8 m?
Treat the words as a claim, then tape the rolls. The Optimal Products two-roll title says 2x rolls and 8 m at about £22.95. A verified review says the two rolls seemed to total about 4 m. Both that file and the one-roll listing show 4.4 from 358 reviews. Two rolls are the right buy when you have measured two runs.
Does a brush change the gutter size in Approved Document H?
Table 2 in Approved Document H is England’s guidance for certain level half-round gutters. A 100 mm gutter in that table, with a 63 mm outlet, is shown for 37 m² and 0.78 litres per second, under the conditions the table states. A brush is not required, and it can reduce flow. The BDC Magazine figure is not an approval, and it does not resize your gutter.
Do these boxes include clips?
No clip or cable tie is named in the included-components lines we saved. Homion says brush only. Reviews say the brush can lift, and buyers added clips or tie wraps. A low-hung gutter, a short tile nose, a flat roof, or a windy gable is the case for a separate clip.

Related pages

Best gutter brush

Gutter brush

Clean gutters from the ground: reach and when to stop

How to fit a gutter brush after the gutter is clear

Gutter brush vs gutter guard: leaves, moss, neither

Sources

Public UK sources and the amazon.co.uk listings compared on this page. Listings captured 21 October 2026. Updated October 2026.

  1. FloPlast GutterBrush (retrieved 21.10.2026)
  2. Hedgehog product guide (retrieved 21.10.2026)
  3. Hedgehog gutter brush (retrieved 21.10.2026)
  4. Approved Document H (retrieved 21.10.2026)
  5. HSE: work at height (retrieved 21.10.2026)
  6. Work at Height Regulations 2005 (retrieved 21.10.2026)
  7. HSE: asbestos cement (retrieved 21.10.2026)
  8. BDC Magazine: gutter guards (retrieved 21.10.2026)