Guttering Horsham

Horsham sits in the wooded Low Weald, and that leafy setting is exactly why gutters block here. Properties near the mature tree canopy around St Leonard’s Forest, Denne Park and the older residential roads fill with leaf litter every autumn, and moss washed down from the roof adds to it. Once a gutter blocks it overflows down the wall, and over a wet West Sussex winter that causes the penetrating damp that’s far more expensive to fix than the clean. An annual clear before winter is genuinely preventative. See our gutter cleaning page.

Full uPVC guttering replacement on a typical semi costs £300–£600 including downpipes; cast iron or cast-iron-effect aluminium for period properties runs £600–£1,400. Gutter clearing is £80–£150 and repairs £100–£300. The cost depends on the roof perimeter, the material, and whether the fascia behind needs attention too — and doing guttering and fascias together is cheaper because the access cost is shared. Our guttering and fascias cost guide breaks down the full roofline pricing.

Water overflowing or cascading down the wall in rain (rather than running to the downpipe), sagging sections where brackets or the fascia have failed, visible cracks and splits, staining or green algae down the wall beneath the gutter, and pooling at the base of the wall. On older uPVC, brittleness and UV-yellowing indicate it’s near end of life. If the guttering is over 20 years old and showing any of these, replacement is usually better value than repeated repairs. A blocked-looking overflow can sometimes just need a clean first — we’ll tell you which it is.

Yes — gutter clearing is available as a standalone visit (£80–£150 including downpipe flushing) or alongside repair and replacement work. Many Horsham properties near trees need an annual clear before winter, and we can put you on a regular schedule so it’s done without you having to remember. While we’re at roofline level we also give the fascia and lower roof edge a quick visual check and flag anything that needs attention. See our dedicated gutter cleaning page for what a standalone clear involves.

For most Horsham properties, once a year in late autumn — after the main leaf fall but before sustained winter rain. Homes shaded by the tree canopy near St Leonard’s Forest, or with north-facing gutters that stay damp, may benefit from a spring clean too. The wooded Weald setting is precisely why blocked gutters are so common locally: the roads around Denne Park and the older parts of Roffey shed leaves straight into the guttering every autumn. A regular clear is cheaper than the damp an overflowing gutter causes over a winter.

Yes — we replace and repair cast iron guttering, and fit cast-iron-effect aluminium as a lighter, lower-maintenance alternative that keeps the traditional appearance. On Victorian and Edwardian properties and in Horsham’s conservation areas, cast iron or its aluminium equivalent is often the appropriate specification — uPVC can look wrong and may not gain consent where the roofline contributes to the building’s character. We match the profile and finish to the property. Our conservation area roofing guide explains where traditional materials are required.

Most domestic properties are fine on standard 112mm half-round or 114mm square-line guttering with 68mm downpipes, but larger roofs, steep pitches, or roofs that shed a lot of water quickly may need deeper 'deep-flow' or 125mm guttering to cope with peak flow without overtopping. Undersized guttering overflows in heavy rain even when perfectly clear, which is a common fault on extended properties where roof area was added but the guttering wasn’t upgraded. We size the system to the roof area and pitch at survey so it copes with the West Sussex downpours rather than overflowing in every storm.