Sand & Lime Mixes (Putty & NHL 3.5)

Sand and lime mixes offer a flexible, breathable and durable alternative to modern cement-based products, making them ideal for traditional and heritage buildings.

• 🧱 Lime Putty Mixes – A highly workable, slow-curing material that allows for excellent adhesion and a beautiful, smooth finish. Perfect for fine plastering, setting coats, and decorative work. The long carbonation process ensures a strong, breathable surface that moves with the building.

• 🪨 NHL 3.5 (Natural Hydraulic Lime) – Provides a slightly faster set and increased strength compared to lime putty, while maintaining breathability. Ideal for external renders, backing coats, and areas exposed to weather. It’s especially suited to older masonry that needs a balance between flexibility and resilience.

• 🌿 Key Benefits

• Breathable — helps manage moisture and prevent trapped damp

• Flexible — accommodates natural movement without cracking

• Compatible — works in harmony with traditional materials and substrates

• Long-lasting — develops strength over time, creating a durable, low-maintenance finish

Chalk & Lime Mixes

Chalk and lime mixes are traditional, highly flexible plasters that closely mirror the compositions used in the 16th century. Ideal for heritage work, these mixes offer excellent movement and breathability — especially important for older buildings with timber frames and lath backgrounds.

• 🪵 Flexibility Over Lath – The natural softness and fine texture of chalk, combined with lime putty, create a plaster that can accommodate subtle movement in timber structures without cracking. This makes it particularly well-suited for lath and plaster ceilings and walls.

• 🧱 Heritage Authenticity – These mixes replicate historic materials and methods, ensuring compatibility with original fabric while delivering a beautiful, traditional finish.

• 🌿 Key Benefits

• Exceptional flexibility — ideal for timber frame and lath work

• Breathable — allows moisture to pass through, preventing damp build-up

• Lightweight and workable — easy to shape, float and finish by hand

• True to period — closely aligned with 16th-century plastering methods and materials

Modern Lime Mixes & Insulated Plasters

Modern lime systems combine traditional materials with contemporary innovations to deliver breathable, energy-efficient solutions for both restoration and new builds. Using natural aggregates such as hemp, cork, and perlite, these mixes provide excellent insulation while retaining the flexibility and moisture control of lime.

• 🌿 Insulated Lime Plasters – Blends incorporating hemp, cork, or perlite offer improved thermal performance and breathability. Ideal for upgrading older buildings without compromising their ability to regulate moisture. These mixes can be applied as base coats or full wall build-ups to increase comfort and reduce energy loss.

• 🪵 Wood Fibre Boards & Breathable Systems – When combined with wood fibre boards, insulated lime plasters create a high-performance, fully breathable wall build-up. This system improves insulation, buffers humidity, and allows walls to “breathe,” helping to prevent condensation and mould while preserving the character of the building.

• 🧱 Key Benefits

• Enhanced thermal performance — reduces heat loss naturally

• Breathable — supports healthy indoor environments and protects historic fabric

• Sustainable — made from renewable, low-impact materials

• Compatible — works well alongside both traditional masonry and eco-build methods