Why Cement Pointing is Ruining Historic Homes in Cheltenham & The Cotswolds

Whether you live in a classic Regency townhouse in the heart of Cheltenham or a traditional stone cottage in the wider Cotswolds, your property was built using a very specific technology: breathability.

Before the widespread introduction of modern Portland cement in the mid-20th century, buildings were constructed and pointed using traditional lime mortars. Lime is naturally flexible, highly breathable, and acts as the "lungs" of a historic building.

Unfortunately, for the last 70 years, well-meaning builders have been patching, repointing, and rendering these historic homes with rigid, impermeable cement. If your period property currently has cement pointing, it is quietly causing structural damage and internal dampness every time it rains. Here is exactly why this happens, and how we fix it.

The Cement Trap: Why Harder Isn't Better

Modern cement is exceptionally hard, brittle, and completely waterproof. When applied to modern cavity walls, it works perfectly. However, when you smear cement between historic, handmade Cheltenham bricks or porous Cotswold stone, you fundamentally change how the building handles moisture.

When rain hits a period property, the moisture is supposed to be absorbed slightly by the wall and then naturally evaporate back out through the softer lime mortar joints. Lime acts as a sacrificial, breathable pathway for water.

Cement blocks this pathway. When moisture gets into the wall (which it inevitably will), the waterproof cement traps it inside.

The Damage: Spalling Stone and Internal Damp

Because the water cannot escape through the cement joints, it is forced to travel directly into the stone or brick itself. This leads to two disastrous outcomes for heritage homes:

• Spalling and Crumbling Facades: As moisture gets trapped in the brick or stone and the winter freeze hits, the water expands. Because the cement is harder than the masonry, the face of the stone or brick simply blows off. If you have noticed the faces of your bricks flaking away or your Cotswold stone crumbling to dust, the cement pointing is the culprit.

• Severe Internal Damp: With the external evaporation route blocked by cement, the trapped moisture has only one place to go: inwards. It travels through your solid walls, eventually appearing in your living rooms as bubbling plaster, peeling paint, and black mould.

The Solution: Authentic Lime Repointing

To save the historic fabric of your building and permanently cure these damp issues, the damaging cement must be completely removed.

At Hughes Heritage, we specialize in the delicate process of extracting modern cement from period properties across Cheltenham and the Cotswolds. We never use aggressive methods that damage the delicate edges (arrises) of the historic masonry.

Once the wall is allowed to breathe again, we repoint the building using bespoke, traditional lime mortars. We carefully select the correct grade of NHL (Naturally Hydraulic Lime) or Lime Putty and blend it with specific local sands. This ensures that the new mortar not only perfectly matches the historic aesthetic and color of your home but restores the structural breathability your property was originally designed to have.

Cement pointing is not just an eyesore; it is an active threat to your period home. Restoring your masonry with traditional lime is the single best investment you can make to protect the longevity and beauty of your property.