Ironstone Pre Mixed Natural Hydraulic Lime Mortar

Description:

Womersley’s Ironstone range with medium strength Natural Hydraulic Lime (NHL 3.5).  The NHL 3.5 binder from both St Astier and Socli is blended with kiln dried Grit and River sand, which are 4mm down. The sands are prewashed to remove sediment before being dried and the result is a very workable mortar with reduced risk of shrinkage. 

Ironstone premixed mortars are batch blended for consistency, naturally coloured and contain a range of sands to give the desired finish and texture.

Coverage:

A 25kg bag will yield approx. 14 litres of mortar sufficient to repoint 3-5m2. Repointing: 20kg/m² stonework; 7kg/m² brickwork.

Preparation:

Before repointing remove all dust and loose material from joints. Dampen the area to be repointed first to help curing.

Application:

Mixing can take place in a tub or mixer. If you don't require the full amount of mortar just take out what's required and seal the remaining in a tub or bag. Use between 4-5 litres of clean water per 25kg or approx. 2 litres per 12kg Tub.

Add the water slowly, using just enough to achieve a workable mix. Lime mortars benefit from being left for 15 mins to fatten after mixing and can be reworked for up to 4 hours.

To ensure good compaction and adhesion the mortar can be tampered firmly with a bristle brush as it starts to firm up, normally after 4 hours, this process also brings the sharp aggregate to the surface creating a lovely textured finish.

Ideal pointing iron for this product - Co-Me Pointing Iron

Bucket Trowel for mixing - Bucket Trowel

Brushed effect finish to expose the aggregates can be achieved with the use of a churn brush - Churn Brush

Masonry walls built with Ironstone Lime Mortar provide:

• Improved breathability
• Protection of masonry from frost and damp damage 
• Long term durability
• Reduced susceptibility to sulphate attack
• Naturally flexibility reducing the chance of cracking
• Suitable for use in listed and heritage buildings
• Environmentally friendly - Lime mortars actively absorb CO2 from the atmosphere.

Please visit individual listings for each Ironstone on the website for multiple bag rates and specific details of binders and aggregates.

We always recommend you do a test panel to ensure a good match