Exterior Cladding in Burwell - Warning Signs and What Causes Them

Expert Exterior Cladding
in Burwell

When Your Cladding Is Telling You Something Is Wrong

Most cladding problems don't appear overnight. They develop slowly, and by the time they're obvious from the pavement, the underlying cause has usually been building for months or years. Knowing what to look for early can save you a significant amount of money and disruption.

Exterior cladding - whether that's timber boarding, uPVC panels, render systems or composite products - acts as the first line of defence between your home's structure and the weather. When it fails, water finds a way in, and that's when the real damage begins.

Common Warning Signs on the Outside

The most visible sign is cracking in render or mortar. Hairline cracks in a render coat are normal as a building settles, but wider cracks or a network of fine cracks (sometimes called crazing or map cracking) mean the render has lost its bond with the wall beneath. Water gets into those cracks, and in a frost it expands, making the crack wider every winter.

On timber-clad properties, the tell-tale signs are different. Look for paint that is peeling, lifting or blistering rather than simply fading. Peeling paint means moisture is escaping from behind the boards. If the timber itself feels soft when you press it, rot has already taken hold and the boards will need replacing rather than repainting.

uPVC and composite cladding panels can look fine from a distance but fail at the joints. Check the pointing and trim strips between panels. If they have shrunk away from the panel edges, or if you can see gaps at the corners, water is almost certainly tracking behind the system.

Signs That Show Up Inside the House

Not all cladding failure announces itself from outside. Damp patches on internal walls, particularly after a period of rain or wind, are a strong indicator. Peeling wallpaper low on an external wall, or a persistent musty smell in rooms that face the prevailing weather, are worth investigating before they are put down to condensation.

Efflorescence - the white powdery deposit that appears on brickwork or render - is caused by soluble salts being carried to the surface by water moving through the wall. It is not itself damaging, but it is a reliable sign that water is moving through the structure in a way it shouldn't be.

What Actually Causes Cladding to Fail

Understanding the cause matters as much as fixing the symptom. Replace the cladding without addressing the root cause and the same problem will return within a few years.

• Age and UV exposure. No cladding system lasts indefinitely. Render coats, timber treatments and panel sealants all degrade over time. UV light breaks down surface finishes, making them porous and less able to shed water.
• Poor original installation. Cladding that wasn't fitted with proper ventilation gaps behind it traps moisture. Boards that were fixed directly onto bare masonry without a breather membrane, or render applied without adequate preparation, will fail earlier than correctly installed systems.
• Movement in the structure. Buildings move. Thermal expansion and contraction, minor settlement, and changes in moisture content all put stress on rigid cladding systems. Render is particularly vulnerable where it bridges different materials - for example, where it runs over a steel lintel or a block-built extension joined to older brickwork.
• Blocked or missing drainage details. Cladding systems rely on flashings, drips and carefully positioned fixings to direct water away from the wall. If those details are missing, incorrectly fitted or have been bridged by a later coat of paint or render, water backs up behind the system.
• Vegetation and biological growth. Moss, lichen and algae hold moisture against the surface and accelerate degradation. Ivy and climbing plants can force their way into gaps, widening them. On timber especially, biological growth accelerates rot.

Why It Pays to Act Early in Burwell

A failed render patch caught early might need a localised repair and re-coat. Left until the render is falling away from the wall, the same property may need the entire elevation stripped back, the substrate treated for damp and salt contamination, and a full new system fitted. The difference in cost is substantial.

The same principle applies to timber. A board that has started to soften at the end grain can be cut back and the fixing point treated. A board that has been soft for two or three winters will have allowed water into the frame or the wall behind it, and the repair becomes a much bigger job.

What a Proper Survey Should Tell You

Before any cladding work is quoted or started, the wall behind the cladding needs to be understood. That means checking for damp in the substrate, identifying any previous repairs that may have introduced incompatible materials, and making sure that any ventilation gap required by the new system can be achieved. Ask any installer how they plan to deal with the existing substrate before the new cladding goes on - the answer will tell you a lot about whether they know their trade.

We carry out exterior cladding surveys and installations across Burwell and the wider Ely area, including nearby villages. If you have noticed any of the signs described above, call us to arrange a survey of your property before the problem develops further.

What We Install and Replace

Ely Roofers fits and replaces a range of exterior cladding systems on homes and commercial buildings. We work with render systems, timber boarding, uPVC panels and composite products, and we'll tell you honestly which system suits your building and your budget. The right choice depends on the wall construction, the exposure of the elevation and how much maintenance you want to carry out over the coming years.

If you're in Burwell and you're not sure whether what you're seeing is a maintenance issue or a sign of something more serious, call us and we'll take a look. Getting a straight answer early is always better than waiting until the problem is obvious.