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Maintain an exposed stone wall

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Maintain an exposed stone wall

Paul Bowyer

Authenticity, cachet, the stone walls are a valuable asset for a home. Still need to know highlighting its stone wall, and all that starts with a good maintenance. To properly renovate an exposed stone wall, prevent moisture... Discover by means and tips sublimate your exposed stone walls.

We used to hide them under a thick coated or a plasterboard, but today the rubble walls have regained their nobility and participate in the stamp of a house. Only to keep a stone wall healthy and its pleasant environment, good maintenance remains in place. Renovation of the joints, cleaning of the stones: the operation is not very technical, but very tedious and the result certainly elegant!

To read also> To highlight an apparent stone wall

Exposing stones from the wall

Avoid falling into the pitfall of too much and clear only some walls. The smooth walls are also a few advantages: painted, they are easier to decorate and can easily hide the electrical ducts.

The first step in renovating the wall is to remove the old joint - even the roughcast that masks the stones - most often with chisel and hammer. It is therefore recommended to focus on laying bare the load-bearing walls. Thicker, they will be more resistant to repeated hammer attacks. Depending on the condition and age of the joints, the clearance work will not be the same. When old joints are easily removed or crumbled, they must be completely removed. If, on the contrary, they are still stable, they will be dug only 3 cm.

Once the old mortar has been removed, clean the support: scrub the stones and interstices vigorously with a damp brush to remove as much dust as possible.

Read also> How to maintain a solid parquet?

Avoid moisture on exposed stone walls: bet on lime!

Recognized for his hygrometric regulation qualities, lime is a cheap traditional material that allows the wall to "breathe". Waterproof, a lime-based mortar is, however, vapor permeable; it allows the moisture to escape from the wall (if the wall is fragile, we can prefer a mortar lime-cement: the work will be reinforced, but we give up the breathable qualities of lime.)

The preparation of the mortar is quite simple: mix lime powder (proportions: between 1/3 and 1/4) and sand (white or gray, depending on the expected final color - between 2/3 and 3/4) with water. The mortar can be reinforced with adjuvants : antifreeze, plasticizer (improves malleability), water repellent (for a bathroom), dyes ...

The application of the mortar is usually done with a trowel by projection or slip. Use a pocket, just like cooking sockets. When the mortar is firmer, tamp it down and possibly reinforce it with a second load, the main thing being to fill all the gaps.

Once the grip is assured, brush the stones to even the joints and ensure a neat and durable finish.

The exposed stone wall gives the house a more noble character

Alexandra Meurant

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