---
product_id: 58789250
title: "Ironstone Old White Mortar NHL 3.5 Based Pre mixed Natural Hydraulic Lime And Sand"
brand: "womersleys"
price: "£55.51"
currency: GBP
in_stock: true
reviews_count: 8
category: "Womersleys"
url: https://www.desertcart.co.uk/products/58789250-ironstone-old-white-mortar-nhl-3-5-based-pre-mixed
store_origin: GB
region: United Kingdom
---

# Up to 4 hours reworkable mortar Versatile for stone, brick & block NHL 3.5 natural hydraulic lime base Ironstone Old White Mortar NHL 3.5 Based Pre mixed Natural Hydraulic Lime And Sand

**Brand:** womersleys
**Price:** £55.51
**Availability:** ✅ In Stock

## Summary

> 🧱 Restore with confidence — the natural choice for timeless masonry!

## Quick Answers

- **What is this?** Ironstone Old White Mortar NHL 3.5 Based Pre mixed Natural Hydraulic Lime And Sand by womersleys
- **How much does it cost?** £55.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/58789250-ironstone-old-white-mortar-nhl-3-5-based-pre-mixed)

## Best For

- womersleys enthusiasts

## Why This Product

- Trusted womersleys brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long Rework Window:** Stay flexible with up to 4 hours to adjust and perfect your mortar application.
- • **Effortless Mixing Formula:** Just add 4-6L water to 25kg bag, mix 10 mins for perfect workability every time.
- • **Authentic Old White Finish:** Achieve a seamless, historic colour match that elevates restoration authenticity.
- • **Multi-Surface Compatibility:** Ideal for pointing or building with stone, brick, and block—adaptable to your project needs.
- • **Pure Ionic NHL 3.5 Lime Blend:** Premium natural hydraulic lime ensures durable, breathable masonry restoration.

## Overview

Ironstone Old White Mortar NHL 3.5 is a premium pre-mixed natural hydraulic lime and sand mortar designed for professional-grade masonry work. It offers a durable, breathable solution suitable for stone, brick, and block applications, with easy mixing and a long rework time of up to 4 hours. Perfect for restoration projects requiring authentic colour matching and structural integrity.

## Description

Ironstone Mortar NHL 3.5 Based Pre mixed Natural Hydraulic Lime And Sand Natural Ironstone Lime Mortar Pre mixed natural hydraulic lime and sand mortar. A general purpose mortar for building or pointing stone, brick and block: available in different strengths, NHL3.5 and NHL5 General Information Ironstone Natural mortar is a dry pre-mixed lime mortar made with Ionic pure and natural hydraulic lime. With a blend of top quality sands of 2.5mm down to achieve a texture but workable mortar. Packaging Available in 25 kg bags Coverage Repointing: 7-20kg m² stonework; 7kg m² brickwork. Rebuilding: I kg of dried product per brick, or 1.5 tonnes will produce 1 metre cubed of mortar. Which Mortar? General solid brick and stone walls, parapets and lintels = medium strength mortar made with Ionic NHL3.5 lime Above roofline, below DPC incl. copings and earth retaining walls = Strong mortar made with Ionic NHL5 lime The correct specification for any mortar should consider the structural requirements, the nature and condition of the background, site exposure, the time of the year and type of finish required. Less porous masonry units and harsh climates require greater mortar strength. Surface Preparation Before pointing or building, clean and remove all dust and loose material from joints and masonry, and adequately dampen dry on high suction surfaces. How to Mix Slowly add 25 kg of Ironstone mortar into a drum mixer. Add only 4 to 6 litres of clean water. Pour the water in slowly as the product mixes, using just enough to achieve the correct workability. Mix for 10 min. Ironstone mortars may be reworked up to 4hrs. Please contact us for further information.

Review: All good - Good product. Mixed well, easy to use for repair pointing a sandstone wall. Price was good, packaging sturdy and delivery was cheap and quick.
Review: Good colour match - Good for repairing old pointing due to a great colour match and easy to work.

## Features

- High Quality Material: Made with Ionic pure and natural hydraulic lime, top quality sands, and Ironstone for a durable and long-lasting mortar.
- Versatile Usage: Suitable for building or pointing stone, brick, and block, and available in different strengths for various structural requirements.
- Easy Mixing: Simply add 25 kg of Ironstone mortar into a drum mixer and add only 4 to 6 liters of clean water, mix for 10 min for a workable mortar.
- Surface Preparation: Clean and remove all dust and loose material from joints and masonry, and adequately dampen dry on high suction surfaces before use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076Q9D19T |
| Best Sellers Rank | 176,907 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,383 in Flooring (DIY & Tools) |
| Brand Name | Womersleys |
| Customer Reviews | 4.5 4.5 out of 5 stars (54) |
| Manufacturer | Womersleys |
| Material | Natural Hydraulic Lime, Sands, Ironstone |
| Number of Items | 1 |
| Unit Count | 1.0 count |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** Womersleys
- **Manufacturer:** Womersleys
- **Material:** Natural Hydraulic Lime, Sands, Ironstone
- **Number of items:** 1
- **Unit count:** 1.0 count
- **Water resistance level:** Not Water Resistant

## Images

![Ironstone Old White Mortar NHL 3.5 Based Pre mixed Natural Hydraulic Lime And Sand - Image 1](https://m.media-amazon.com/images/I/51+0GHGxIaL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ All good
*by P***J on 30 October 2025*

Good product. Mixed well, easy to use for repair pointing a sandstone wall. Price was good, packaging sturdy and delivery was cheap and quick.

### ⭐⭐⭐⭐⭐ Good colour match
*by P***S on 27 August 2025*

Good for repairing old pointing due to a great colour match and easy to work.

### ⭐⭐⭐⭐⭐ Great product
*by R***L on 14 October 2022*

Easy to use and work with for repointing my walls (18th century ironstone), just needed to add a little yellow cement dye to warm the tone to match original pointing, which was a little more beige in colour.

## Frequently Bought Together

- Womersleys Ironstone Old White Mortar NHL 3.5 Based Pre mixed Natural Hydraulic Lime And Sand
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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-07-21*