could this lime mortar be mixed with sand and used for re-pointing a brick chimney?

yes, I pointed and replaced soft brick that were made in the 1870s on a north facing, shaded and wet wall. Worked well, my ratio was 3 part sand, 1.25 lime, .25 Portland cement. It is difficult to find technical information on ratios and applications.

What type of sand should be used?

Finding the right sand is not easy and it matters for how good the plaster turns out. One wants sand with rough grains in contrast to smooth round so no beach or river sand. As sand is locally quite variant it might require some search to find it. Grain size determines how fine the finish and layer dimensions can be achieved

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Otterbein Natural Hydraulic Lime 3.5, 25 kg Bag

Otterbein Natural Hydraulic Lime 3.5, 25 kg Bag

Product ID: 58789251

Details

Brand
Otterbein
Color
Lime Stone
Item Form
Powder
Item dimensions L x W x H
26 x 6 x 16
Shape
Bag

💧Superior water retention & elasticity

🧱Natural hydraulic binder, cement-free

🛡️High sulfate resistance

R15997

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Description

🧱 Build timeless, resilient spaces with Otterbein’s natural hydraulic lime!

BUILT TO LAST - High sulfate resistance ensures your masonry stands strong against harsh elements.
PERFECT ADHESION - Exceptional side adhesion to stone guarantees durable, seamless finishes.
FLEXIBLE STRENGTH - Low-tension hardening and high elasticity protect your structures from cracking.
SALT DAMAGE DEFENSE - Prevents harmful salt penetration, preserving masonry integrity over time.
ECO FRIENDLY HISTORIC BINDER - Restore with confidence using a cement- and gypsum-free formula trusted for centuries.

Otterbein Natural Hydraulic Lime 3.5 is a 25 kg bag of historic, cement- and gypsum-free natural hydraulic binder certified to EN 459-1. It offers high sulfate resistance, low-tension hardening, excellent elasticity, and superior water retention, making it ideal for ecological building, restoration, and preservation of historic masonry. Its unique formulation prevents damaging salt penetration and ensures strong adhesion to stone, delivering durable, breathable mortar for professional-grade construction.

Specifications

ASIN	B06VX4N7LF
Best Sellers Rank	#605,095 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #264 in Flooring Adhesives & Mortars
Brand Name	Otterbein
Color	Lime, Stone
Customer Reviews	4.7 4.7 out of 5 stars (9)
Grade Rating	Industrial/Specialist
Item Dimensions	26 x 6 x 16 inches
Item Form	Powder
Item Shape	Bag
Manufacturer	Otterbein
Number of Items	1
Number of Packs	1
Part Number	A2022109
UPC	705911484283

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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R15997

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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3 weeks ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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