Larsen Charcoal Pointing Mortar

Larsen Charcoal Pointing Mortar

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Create a completely seamless finish when pointing natural paving with Charcoal Larsen Gun Point Mortar. The pointing mortar mixture is easy to make, simply add water for a durable and hard-wearing material. Using Larsen Charcoal Pointing Mortar will produce a consistent colouring across the patio. Before buying, we recommend that all customers read our Product Guide.
Product TypePointing
Material TypeCementitious coloured powder
Country Of OriginUK
Application MethodPointing Gun
Container TypeMultilayer paper bag
Application Surface Temperature5 - 30˚C
CoverageRefer to product calculator
Curing Time4 hours @ 20˚C
Storage & Shelf LifeStore unopened containers in a dark, cool, dry location away from extremes of temperature. The product has a minimum 6 month shelf life in unopened bags.
PPE RequirementsAvoid contact with eyes and skin. Wear latex gloves and protective clothing during application.
Recommended ForSawn Natural Stone
Working Time40 Minutes @ 20˚C
Equipment RequiredBuckets, paddle mixer, water, pointing gun, sponges, trowel, pointing tool
Joint WidthMinimum 5mm
Pointing PreparationIt is recommended to wait at least 7-14 days before pointing. It can help to dampen natural paving before grouting to help reduce the risk of picture framing. Prior to grouting the open grout joints clean, dry and free of residues. Porous or textured tiles/slabs may require sealing before grouting with a suitable impregnating sealer. If in doubt trial an inconspicuous area to check for staining and correct colour before commencing.
Mixing Mix each 25kg bag with 4.5-5.0L clean water. GPM should be mixed with the correct amount of water using a low-speed drill and mixing paddle. Mix for a minimum of 3 minutes, allow to stand for 2 minutes, then remix. To check consistency, fill the tube of pointing gun and shake, the mortar should 'hang' from the nozzle. Do not mix more product than can be used in approx. 40 minutes. Do not add more water or 'wet-up' mortar which has begun to set.
Application ProcessGPM can be applied to joints from 5mm wide up to 150mm deep. Joint depths should ideally bee 1.5 times the width. After filling the pointing gun, place nozzle as deep as possible into the joint and inject the mortar. Fill the joint from the bottom and allow to slightly overfill the joint. Allow mortar to stiffen before removing excess and tooling as required. Any mortar remaining on the surface of the paving should be removed and washed immediately before it sets. Use of excessive water or "wash boys" to clean the paving is NOT recommended as the high amount of water can result in excessive efflorescence. To ensure colour is correct please test the product first and always use the same batch. Refer to the install/product guide for further information.
Cleaning ToolsWash all tools frequently to avoid material bonding to them
Cleaning During ApplicationAlways keep a clean sponge and water available for wiping off any excess or spillages from paving


Can withstand a light jet wash, be careful not to get too close which could damaged the joint

Please see our FAQs for more information.

Delivery Cost

£10 standard courier charge, up to 25kg

£20 standard courier charge, up to 50kg

£45 per micro pallet charge, up to 250kg per pallet

Standard pallet charges apply to orders over 250kg. Add your delivery postcode at checkout for pricing.

Delivery Times

Choose your delivery date when checking out. Timed slots are not available.

Free* next day delivery available to certain postcodes. (*T&C's apply)


Cancel up to 14 days from the date of delivery. Products to be returned in the same condition and packaging. No returns for bespoke or pre-sealed items.

You will be responsible for returning the material to London Stone. Collection can be made by us but this will incur a collection cost.

All prices shown are + VAT.

Installation tools

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