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Roundtower Lime
The Forge,
Innishannon,
Co. Cork,
Ireland.
T12 W72X
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Preserving the rich history of the architectural heritage is a noble endeavour. Historic restoration plays a pivotal role in maintaining the structural and aesthetic integrity of heritage buildings. A key component in this process is the use of lime putty mortar, a traditional and reliable material that ensures the authenticity and longevity of these cherished structures.
Historic restoration is not merely about preserving beautiful old buildings; it's a way to connect with the past. These structures offer insights into architectural trends, construction methods, and the culture of their respective eras. By restoring historic buildings, we ensure that these treasures remain accessible to future generations, allowing them to learn from and appreciate the past.
Lime putty mortar is the hero of historic restoration projects. Comprising lime, sand, and water, it holds a unique place in preserving the authenticity of old buildings. However, not all lime is created equal. It's crucial to use the right type of lime for your restoration project. Lime putty mortar relies on non-hydraulic lime, which sets when exposed to carbon dioxide in the air. It must be used in a "wet" form to ensure its effectiveness.
You might wonder why we prefer lime putty mortar over the commonly used Portland cement. The answer lies in its compatibility with historic structures. Portland cement, though widely used, is too rigid for the soft bricks and stones found in old buildings, leading to damage over time. Moreover, it traps moisture, causing the dissolution of lime. Lime putty mortar, on the other hand, is soft, flexible, and porous, allowing it to move with the building and preventing damage.
1. Protective Gear - Lime putty is caustic and can harm your skin. Always wear protective clothing, gloves with extended cuffs, protective footwear, and safety glasses.
2. Optimal Conditions - Install lime putty mortar when temperatures are consistently above freezing for three weeks. Ensure the substrate is thoroughly wet, especially in hot weather. Mist the wall daily for three days after installation to aid carbonation.
3. Mixing - For efficient mixing, use a right-angle drill with an eggbeater attachment. Ensure it reaches a creamy consistency.
4. Installation - Remove loose mortar from the joint and wet the substrate before installation. Install the mixed mortar, leaving the joint slightly raised. Finish when it's "thumbprint" hard, matching the surrounding mortar joint profiles.
5. Aftercare - Mist the wall and joints three times over several days with non-chlorinated water to encourage carbonation. Avoid chlorinated water as it can react with lime, producing salt that's difficult to remove.
Lime putty mortar is a cornerstone of successful historic restoration. Its compatibility with heritage buildings ensures the preservation of their authenticity and charm. By following these tips, you can use lime putty mortar effectively in your restoration projects, contributing to the continued celebration of our architectural legacy. If you need reliable lime putty mortar supplies, consider Roundtower for high-quality products and expert guidance in your historic restoration endeavours.