Half Round Gutter – 90° uPVC Rainwater | Showcase Plastics Essex

Half Round Gutter – 90° uPVC Rainwater | Showcase Plastics Essex

50mm Height 112mm width 0.9 flow rate Area Drained 43m2
Round Gutter
A standard and economical half round system for use on traditional small to medium sized houses. The gutters are easy to fit with a complete range of colour matched fittings.
The round gutter systems are produced in high gloss finish in white, black, brown, caramel, grey and anthracite grey. Kayflow gutter systems carry a 10 Year Guarantee for the black, white, brown, grey and anthracite grey profiles – see our T&C’s for more details.

All styles and colours of Kayflow gutters are BS Kitemarked.

Why buy a half round gutter 4m from Showcase Plastics

• Colours to match modern anthracite and traditional black / brown / white rooflines
• Sold alongside fascia and soffit so the whole eaves package comes from one counter
• Local advice on fall, outlet positions and roof area
• 20+ years in building plastics and home improvement
• Supply only or supply & fit
• Trade and DIY welcome
• Estimate within 24 hours
• Collection from Unit 6, Heybridge Industrial Estate, Maldon CM9 4XL, or delivery across Essex and the London borders

01621 842 000 · WhatsApp 07949 280 147 · sales@showcaseplastics.co.uk
Mon–Fri 7am–5pm · Sat 8am–12pm

Areas we supply and fit

Maldon, Heybridge, Chelmsford, Colchester, Witham, Braintree, Burnham-on-Crouch, South Woodham Ferrers, Billericay, Basildon, Rayleigh, Southend, Romford and CM, CO, SS, RM, IG postcodes.

How to install a half round gutter 4m (overview)

1. Mark the outlet plumb over the drain or gully.
2. Fix the outlet (and high-end stop end) so the gutter will sit correctly under the roof edge.
3. String a line for the fall toward the outlet.
4. Fix fascia brackets along the line at the correct centres.
5. Clip in each half round gutter 4m length. Cut with a fine saw; deburr the cut edge.
6. Join lengths with union joints, seating the seals fully — a dab of system lubricant helps.
7. Fit angles at corners and stop ends at open ends.
8. Connect downpipe with offsets as needed so the pipe sits tidy on the wall.
9. Water-test the run before leaving site.
10. Keep leaf debris clear; consider guards only where they will not cause bridging over the outlet.

Not a full manufacturer method statement — follow the system instructions supplied with the fittings, or ask us to supply and fit.

If the existing gutters are half round, replacing like-for-like with a half round gutter 4m is usually the cleanest option. Mixing profiles on one elevation rarely looks right.

Product specification

Flow capacity depends on fall, outlet position and roof area. As a guide, a standard 112mm half-round system with a stop-end outlet is often sized for moderate domestic catchment; a running outlet in the centre of a long run serves a larger area. For big roofs or low-pitch large planes, ask us whether half round is enough or whether a deeper system is wiser.

What a half round gutter 4m does

• Catches water running off tiles or slates
• Carries it along the eaves with a slight fall
• Delivers it into outlets and downpipes
• Protects fascia, brickwork and foundations from constant soak

Tiles should overhang slightly into the gutter so water drops in cleanly — not short of the gutter, and not jammed hard against the back so debris traps.

Fall, brackets and expansion

Fall
Aim the gutter down towards the outlet. A common recommendation is about 1:350 (roughly 3mm per metre). Some fitters prefer a slightly steeper fall for reliability. Level gutters still work in light rain but silt up and overflow more easily.

Bracket spacing
Typical maximum around 600mm centres on the fascia; closer (e.g. 300mm) in exposed or heavy-snow locations. Place a bracket within about 150mm of every joint, angle, outlet and stop end.

Outlet height
Fit outlets so the gutter sits close under the roof edge (often no more than about 50mm below the tile line — follow the system instructions).

Expansion
uPVC moves with temperature. Leave the system’s specified gap at unions (often around 5–10mm visible play in the marks). Do not glue half-round gutter joints unless the manufacturer says so — sealed clip joints are designed to move.

Fittings you will usually need with a half round gutter 4m

• Fascia brackets
• Union joints (connectors)
• External / internal angles (90° and sometimes 135°)
• Stop ends (left/right or universal)
• Running outlet or stop-end outlet
• 68mm round downpipe, clips, bends, shoe
• Optional hoppers, branches, pipe sockets

Order fittings in the same colour as the half round gutter 4m. We can build a full list from a sketch of the elevations and drain positions.