Specialist lime mortar repointing - Oxfordshire, Gloucestershire.
I am a heritage conservation mortar specialist. For practical purposes, and as a service to my clients, I use only the best natural hydraulic limes, those with the highest free lime content and the lowest compressive strength. These are much kinder to natural stone and aged brickwork and present the best finish.
Below: cement and rotten quoins.
Below: new hot lime mortar and repaired quoins.
In the case of hot lime mortars I use only the highest quality quicklime and sands which are not readily available locally. These are triple washed and blended to make the most porous, flexible, robust and beautiful mortars.
My tools and equipment are top quality and I achieve an outstanding finish by increasing the amount of time spent on every aspect of the work including the most important final brushing.
Most period properties have suffered the damaging effects of unqualified and inexperienced workmanship coupled to the use of inappropriate materials. I see it all the time. The lure of cheap work is not without its consequences and the built environment is taking a hammering. Please, please please: The time for this to end is now. Have it done right and do your property, yourselves and future generations a favour.
History teaches us that, traditionally, quicklime was slaked on site in the production of lime mortar. It has always been understood that good mortar was mixed to a ratio of 1:3. That's one part lime, three parts sand. We know this because in historic records,1:3 mixes were specified by architects and master builders.
However, the aforementioned quicklime mix meant that the lime content increased through slaking and it's taken this long for us to understand - through mortar analysis - that the way we use lime nowadays falls way short of what the craftsmen of yesteryear intended.
The ways of preparing mortar, passed down from father to son hundreds of years ago, have today been interpreted incorrectly and it now means that the current approach to combining NHL or wet lime putty and sand on site can lead to problems.
This realisation has only been made possible by deconstructing old mortars to reveal that most were made in a way which meant there was a far higher lime content than we ever imagined.
Through many years of practise, in combination with the study of academic research, I can at last bring true historic artisan craftsmanship to period stone and brick built properties.
My focus is primarily on exclusively built properties in prime locations where I can provide top quality to owners who are looking for superior workmanship. My customers have usually concluded that to do a good job sympathetically takes time and are unwilling to settle for anything other than the absolute best.
For beautifully textured natural stone and brickwork to retain its lasting appearance it needs a quality natural mortar to keep nature at bay.
I specialise in the restoration of high-end stone and antique brick properties
To see how I get the best results go to:
Choosing someone who fails to understand the mechanics and science of older properties can have disastrous results as specialist skills and materials are required on historic buildings. These resist water penetration whilst remaining porous and flexible. Moisture is wicked away from buildings ensuring they remain weatherproof, watertight and dry.
In the case of repointing, newly mortared joints often need to be brush finished and not trowel finished. This technique makes the grains uniform and creates a protective coat which weatherproofs the mortar until completely hard which takes about a year.
A top-end result cannot be achieved without the appropriate tools. I have many of these specially made and my array includes hand-cast axes with which to dress stone in addition to specifically adapted trowels which facilitate work on non-standard joints.