Seven Signs Your Newcastle Roof Is Overdue a Clean

Most people never really look at their own roof. You leave the house, you come back, and the top of it stays a blur until something goes wrong. But your roof drops hints long before it starts leaking, and on a Newcastle terrace those hints are usually easy to spot once you know what you're looking at.

Here are seven of them. If two or three ring true for your house, your roof is probably overdue a clean.

The quick answer: Green or black staining, moss in the gutter, water running down the wall, damp patches upstairs, sagging or blocked gutters, gritty debris washing off the roof, and a roof that simply looks darker than your neighbours' are the clearest signs. Any of them means it's worth getting your roof looked at before winter.

1. Green or black staining across the slates

The most obvious sign is colour. Clean slate is an even grey. When algae takes hold you get dark streaks running down the slope, and when moss moves in you get raised green cushions, usually heaviest on the shaded north side.

On a Newcastle street where every house started the same colour, a stained roof stands out. If yours has gone patchy green while next door stayed grey, that's the growth talking.

2. Clumps of moss sitting in the gutter

Go and look in your gutter, or check the ground after a windy night. Little dark-green clumps that look like bits of a scouring pad are chunks of moss that have broken off the roof and washed down.

That tells you two things. The roof has enough moss to be shedding it, and that same moss is now collecting in the gutter where it blocks the flow. One problem is feeding the other.

3. Water running down the wall in heavy rain

Stand at a window during a proper downpour and watch the gutter. Water should run along it and disappear down the pipe. If instead it's brimming over the front edge and sheeting down the brickwork, the gutter is blocked, and moss off the roof is the usual culprit.

Water running down a wall doesn't stay outside for long. It finds its way into the brick, and on a north-facing Newcastle gable it can leave a damp patch inside within a season.

4. Damp patches on upstairs ceilings or walls

A brown or yellowish stain on a bedroom ceiling, or a patch of damp at the top of an upstairs wall, is your roof telling you water is getting in. It might be a slipped slate, a blocked valley or an overflowing gutter, but the common thread is water going where it shouldn't.

Catch this early and it's often just a clean and a minor fix. Leave it and the plaster, the timber and eventually the room start to suffer.

5. Gutters sagging or plants growing in them

A gutter full of wet moss and leaf mulch is heavy. Over time that weight pulls the brackets loose and the gutter starts to sag or tilt. Once it tilts, water pools instead of draining, and you sometimes even get little weeds or grass sprouting along it.

A tilted, sprouting gutter is well past due. It needs clearing, and the roof feeding it needs a look too.

6. Grit and granules washing off the roof

If you have concrete tiles rather than slate, run your eye over the ground below the downpipe. A build-up of fine gritty sediment means the surface of the tiles is breaking down, often sped up by years of moss holding damp against them.

It's a quieter sign than a leak, but it tells you the roof surface is wearing, and that a clean and treatment now could add years before anything needs replacing.

7. Your roof just looks older than the street

Sometimes there's no single fault, just an overall tiredness. Your roof looks darker, greener and more weathered than the houses either side. On Newcastle's uniform terraces that contrast is easy to see, and it usually means growth has crept up on you slowly enough that you stopped noticing.

Before you decide the roof itself is failing, it's worth remembering how much of that tired look is just moss and dirt sitting on a sound roof. Often a clean takes ten years off its appearance.

If you want a quick self-check before calling anyone, look for these:

• Colour : green cushions or dark streaks, worst on the shaded slope.
• The gutter : moss clumps, sagging, or water spilling over in rain.
• Inside : any damp patch on an upstairs ceiling or wall.
• The ground : grit, granules or bits of moss below the downpipe.
• The contrast : how your roof compares to the houses next door.

Don't wait for the leak to make the decision for you

None of these signs means panic. They just mean your roof is asking for a bit of attention before the wet months set in. A clean and a gutter clear now is a small, planned job. A leak in January is a scramble. If a few of these seven sound like your house, it's the right time to get someone up for a look.

Frequently Asked Questions

How many of these signs should worry me?
Even one is worth acting on, but two or three together is a clear message. Damp inside the house is the one to move on quickly.

Can I check the roof myself?
You can spot most of these from the ground or a window. Please don't climb up to check, though. Looking from below tells you plenty and keeps you safe.

My roof looks fine from the front. Could it still need cleaning?
Yes. The front often faces the sun and stays clearer, while the shaded rear slope quietly greens over. The side you don't see is usually the mossy one.

Is a stained roof always a cleaning job, or could it be worse?
Most of the time it's surface growth on a sound roof. A proper look will tell you if anything underneath needs attention, but staining alone is usually just a clean.

How soon should I sort it after spotting the signs?
Before winter if you can. Clearing growth and gutters ahead of the frost stops small problems turning into leaks during the coldest months.

Spotted a few of these on your own roof?
Ben's Roof Cleaning checks, cleans and clears roofs and gutters across Newcastle and Tyne and Wear, with over 15 years of experience. Get in touch or call 0191 323 1965 for a free, no-obligation quote.

A tired roof is usually a fixable roof

The good part about all seven of these signs is that they show up early, while there's still time to act cheaply. Moss, stains, blocked gutters and the odd damp patch are the roof doing its job of warning you. Read the warning, deal with it before the cold sets in, and you keep a small job small.