Freezteq BR-Finish

The Freezteq Breathable Render System is a range of specialist restoration mortars designed to be used after the application of Freezteq Original. It allows internal and external wall finishes to be immediately reinstated while still permitting moisture and salts to escape safely from the masonry.

After Freezteq Original is installed, moisture and salts remain above the treatment line within the wall. These naturally migrate towards the surface as the wall dries. The Breathable Render system allows the damaging salts out of the structure and traps them in the mortar matrix, not allowing the hydroscopic salts to make the finishes wet.

If gypsum-based or other non-breathable finishes are applied prior to the wall becoming completely dry, trapped moisture and salts can lead to:

• Debonding of finish
• Reappearance of salt contamination in walls
• Surface deterioration and staining
• Premature failure of the finish

This is why correct material selection and timing are critical.

The system is designed to allow controlled moisture movement, laterally through the wall while managing salt migration. It enables the wall to continue drying naturally without damaging the new finish.

The base layer is structured to create voids that allow salts to migrate out of the masonry, while the finishing layer permits moisture vapour to pass through while retaining salts within the render system.

The system consists of two key layers:

BR-Base

• Forms the primary restoration layer
• Creates pathways for salts to move out of the wall
• Works as a controlled sacrificial layer for salt management

BR-Finish

• Provides a breathable surface finish
• Allows moisture vapour to escape
• Retains salts within the render structure
• Is smooth and paintable.

Both products are hydrophobic, meaning they cannot absorb moisture, helping to keep the surface dry to the touch.

Yes, it can be applied as soon as is practically appropriate after Freezteq Original installation. However, each project should be assessed individually depending on wall condition, salt levels, and moisture content.

Breathability is essential because walls continue to release moisture and salts long after rising damp treatment. A breathable damp proofing system ensures:

• Ongoing evaporation of trapped moisture
• Safe migration of salts
• Reduced risk of surface damage
• Long-term durability of finishes

Yes. The Freezteq Breathable Render System can be supplied in a heritage version if a lime based solution is specified for heritage and older buildings where traditional rigid plasters would trap moisture and accelerate deterioration.

The render system does not “dry” the wall instantly. Instead, it allows the natural drying process to continue safely by managing moisture and salt movement until equilibrium is reached.

However the hydrophobic nature of the mortar means, that once cured, it is always dry to touch.

Unlike gypsum or standard cement-based plasters, Freezteq renders are:

• Highly breathable
• Hydrophobic (do not retain moisture)
• Designed for salt management
• Engineered for long-term compatibility with damp-proofed walls

Using unsuitable finishes can result in:

• Moisture entrapment within the wall
• Accelerated salt crystallisation damage
• Loss of adhesion between wall and render
• Recurrent damp-related issues