Fascia and soffit cleaning in Paisley and Renfrewshire

White roofline boards gone grey or green? Tell us about the house and we'll pass it to one trusted local firm who'll quote to clean them, usually alongside the gutters. Free, no obligation.

We cover Paisley and the towns around it, including Renfrew, Johnstone, Linwood, Barrhead, Houston, Bridge of Weir and Erskine, where green fascias are a particularly common sight on the houses facing the river. Our Erskine gutter and fascia page explains why.

What fascias and soffits are, and why they matter

People use the two words as if they mean the same thing. They don't. The fascia is the upright board along the edge of the roof. Your gutter is screwed to it, so it carries the weight of a full gutter. The soffit is the flat panel underneath, closing the gap between the top of the wall and the overhang of the roof.

Between them they hold the gutter up, keep rain, birds and wasps out of the roof space and, through the little vents in the soffit, let the loft breathe. That last job matters more here than it would in the south of England. Block or paint over the vents and moist air gets trapped in the loft, where it condenses on the underside of the roof and soaks into the insulation.

Why they go green in Renfrewshire

That green-black film isn't dirt. It's algae, a living growth that grips the surface. That's why a hose won't shift it, and why it comes back on its own timetable rather than whenever more muck lands on it.

Two things speed it up. One is shade: a north-facing side of the house, or one shaded by trees or the house next door, stays damp longest and always goes first. The other is an overflowing gutter. Water spilling over the front edge streaks silt and rotting leaves down the fascia, and algae grows far better on that than on clean plastic. Homes on the main roads through Paisley and Renfrew also pick up a grey film from traffic on top of the green.

So cleaning the fascia while the gutter above it keeps overflowing is money wasted. The two are normally done together. If the gutters are the real problem, start with our page on blocked gutters and downpipes.

Clean them or replace them?

For most houses round here, clean them. Green staining on sound uPVC is cosmetic. It makes a house look neglected, and it's the first thing a buyer sees pulling up outside, but it isn't hurting the board. A clean costs a small fraction of new roofline.

A few things are worth taking more seriously:

• A fascia that's bowed or soft when pressed. On older houses there's often timber behind later plastic capping, and soft means rot, not dirt. Washing won't help; the board needs replacing, which is a job for a roofer. Our roofers in Paisley page covers roofline repairs.
• Gutter brackets pulling away from the board. The screws have lost their grip, and a full gutter is heavy.
• Soffit vents blocked, painted over or missing. That's a ventilation problem, not a looks problem.
• Green coming back within a few months of a clean. Almost always the gutter above is still spilling over.
• Gaps where birds or wasps are getting in. Best closed before nesting season, not during it.

If someone quotes to replace the whole roofline on the strength of green staining alone, get a second opinion.

Older and newer houses need different handling

Housing in Renfrewshire changes a lot from one street to the next, and it changes the job. Many of Paisley's Victorian and Edwardian houses have painted timber fascias, sometimes hidden behind plastic cladding added later. A pressure washer forces water in behind the cladding, where it sits against the wood it was meant to protect. Those need a gentle hand.

The post-war and newer estates in Linwood, Erskine and Johnstone are mostly plastic all round, which comes up well with a soft wash and no scrubbing. Say which you have when you ask for a quote, as it changes the method and sometimes the price.

While you're looking up at the roofline, have a look at the walls below it too. Dark streaks under the soffit that don't wash off, or rendering with fine cracks running from the corners of windows, can mean water is getting in. Our rendering page explains what's worth fixing.

What the clean should cover

• Fascias cleaned of algae, grime and staining, plastic or painted.
• Soffits cleaned carefully around the vents, without blocking them.
• Gutters cleared at the same visit, since what's in them is what stains the boards. See gutter cleaning in Paisley.
• Loose sections, failed brackets and soft boards pointed out while the equipment is up, with anything extra priced before it's done.