A well-kept facade doesn’t just make your home look attractive – it also protects the structure from rain, frost, and pollution. But when paint starts to peel, mortar crumbles, or cracks appear, the question arises: how much can you actually do yourself, and when should you call in a professional? Here’s a guide to what UK homeowners can safely tackle on their own, and where it’s best to get expert help.

Start with a thorough inspection

Before you pick up any tools, take time to assess the condition of your exterior walls. On a dry day, walk around your home and look for:

• Cracks in render or brickwork
• Flaking paint or render
• Dark patches that may indicate damp
• Loose or crumbling mortar joints

Minor issues can often be repaired with simple materials, but if you notice large cracks, bulging render, or signs of penetrating damp, it’s wise to consult a builder or surveyor. These could point to structural or moisture problems that need professional attention.

Cleaning the facade – a good first step

A proper clean can make a huge difference. Dirt, algae, and pollution can dull the appearance of your home, but they’re usually easy to remove. Use a soft brush, warm water, and a mild detergent. Avoid using a pressure washer unless you’re experienced – too much pressure can damage brickwork and force water into the wall.

For brick facades, you can use a specialist brick or algae cleaner. Always rinse thoroughly afterwards to remove any residue that could harm the surface. If your home is listed or in a conservation area, check local guidance before using any chemical cleaners.

Repointing – a classic DIY task

If the mortar between your bricks has started to crumble, you can repoint small sections yourself. It takes patience but not necessarily specialist tools.

1. Rake out the loose mortar with a joint raker or chisel.
2. Brush away dust and lightly dampen the joints.
3. Apply new mortar using a pointing trowel.
4. Smooth the joints and allow them to cure slowly, ideally in mild, overcast weather.

Choose a mortar that suits your property’s age and materials. Older homes often need a lime-based mortar, which is softer and allows the wall to breathe, while newer houses can use cement-based mixes.

Repairing render and paint

If your home has a rendered facade, you can patch small areas where the render has flaked or cracked. Remove any loose material, brush the area clean, and apply new render that matches the existing texture. Once it’s dry, paint with a breathable masonry paint that allows moisture to escape.

Never paint over damp or damaged render – it can trap moisture and worsen the problem. If large sections are loose or bulging, it’s best to get a plasterer or builder to assess the damage.

Insulation and major renovations – leave it to the experts

While many small jobs are manageable for a confident DIYer, larger projects should be left to professionals. External wall insulation, full repointing, or replacing damaged bricks require experience and the right equipment. Poorly executed work can lead to damp, cracking, or reduced energy efficiency.

A qualified tradesperson can also advise on materials, colours, and finishes that suit your home’s style and comply with local building regulations.

Maintenance – the key to a healthy facade

Once your facade is in good shape, regular maintenance will keep it that way. Inspect your exterior once a year, especially after winter. Clean off algae and dirt before they take hold, and make sure gutters and downpipes are clear so water drains away properly.

Small repairs carried out promptly can save you from costly work later – and help your home retain its charm for years to come.

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DIY – but with care

Facade renovation doesn’t have to be daunting, but it does require respect for the materials and an understanding of how your home is built. Start with the simple tasks, and don’t hesitate to seek advice if you’re unsure. With a careful approach, you can save money, preserve your home’s character, and take pride in maintaining it yourself – without compromising on quality.