Cotswold Lime Pointing

 

If you are a Home Owner, Surveyor, Architect or Property Agent  looking for sensitive restoration, re-pointing, rendering, Stone Cleaning and repair solutions for your home or building…  
                                                         Call or E-mail us Today!   

 

Re-Pointing    Bullet    Re-Rendering    Bullet    Stone Cleaning    Bullet    Stone Repair

 

Re-Pointing
Soft Mortar

Re-pointing of stonework and brickwork should be undertaken where mortar has weathered out, leaving open or recessed joints vulnerable to water penetration or where the mortar is very soft or loose.  The old pointing should be carefully raked out and replaced.  The new mortar should be packed firmly into the joint using a pointing iron after all loose material has been flushed out.

The joint should be finished in accordance with the original form, where there is evidence of it.  This is particularly applicable where joints are finished with special treatments, e.g.; an incised line in the centre of each joint, ‘beak’ pointing, tuck pointed brickwork, finely finished masonry, ashlar stone, or joints filled with screened lime.  For joints, which are not specially treated, a flushed finish, fractionally recessed, is usually appropriate.

Relatively recent forms of joint finish, such as ‘strap’ or ‘ribbon’ pointing raised above the surface, ‘bucket handle’, ‘weather-struck’, etc, are unsuitable for historic building work.  Re-pointing is carried out in three stages; raking out, cleaning out and finally the re-point. we would be pleased to give you a free consultation  and quotation on this or on any of our services listed.

Time of year: 
Please note that care should be taken not to apply lime mortars and renders when there is a risk of frost damage.  It is important to prevent frost crystals forming within the mortar soon after application.

Raking Out
steam-cleaning
Stone Cleaning

We sensitively clean external weathered stone, removing staining such as carbon, traffic film,  leeched salts, organic matter, environmental pollution and paint from your building façade.  Using a range of non-abrasive and environmentally-friendly cleaning techniques, we can effectively clean grime and oxidisation from porous stone such as sandstone or limestone, while preserving the integrity of the substrate.  For more stable or harder stone a high presure wash can give extremely good cleaning results.

We would be pleased to give you a free consultation and quotation on this or on any of our services listed.

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Stone Cleaning
Stone Repair

Stonework

Stones should only be replaced where they have lost their structural integrity due to deep erosion, or serious fracture or spalling, or where weatherings are no longer performing the function of throwing water off surfaces below.  If erosion or spalling is only superficial, it should be accepted and loose water-holding material lightly and carefully brushed off.  The redressing of surfaces is not appropriate in most cases.  Where moulded or carved stone needs to be replaced, the details of the original should be matched as exactly as possible.

Replacement stones should match the original size, shape, colour, texture, qualities of durability and surface finish.  It is also important to ensure that bed joints are correctly finished.  Ideally, stone should come from the same quarry as the original, provided the durability of the stone currently available is considered to be adequate.  If this cannot be matched, geologically compatible stone should be used.  We would be pleased to give you a free consultation and quotation on this or on any of our services listed.

Brickwork

As with stonework, damage is most often the result of water penetration, so exposed features such as cornices, string courses, copings and plinth offsets are the most likely to be affected.  The number of bricks that are sufficiently decayed to be in need of replacement should be accurately identified.  Only bricks that are beyond retention on structural grounds should be renewed.  This is particularly the case with early brickwork.  The method of cutting out should cause the minimum of disturbance to the surrounding brick, brick slips should only be used for individual bricks and it should be remembered that there would be an inherent structural weakness.  Replacement bricks should replace the existing ones in dimensions, strength and durability, texture of finish and colour.  They should be laid in the same bond and width of joint.

Brickwork
Stone Repair

Talk to us: 07938 378 068
enquiries@cotswoldlimepointing.co.uk

re-rendering

Lime renders were traditionally applied to give protection to walls built of poor quality rubble stone or porous brick or to walls in exposed locations facing driving winds.  They help by acting like a sponge, absorbing rainfall then allowing it to evaporate rather than soak into the wall.  Most cottages and houses built of rubble stone would have been rendered originally and they tend to suffer from penetrating damp if the lime render is removed or replaced with a cement rich render.

There is a wide range of types of lime rendering.  Rubble walls of many vernacular buildings were often treated with just a single coat of render, amounting to not much more than a very full, flush pointing.  Such a render is thicker in the hollows and very thin over the stone faces.  There was no attempt to create a flat surface so the undulations of the wall and even some of the stones themselves were not concealed.  For a smarter finish or on more prestigious buildings the aim would be for a more uniform render achieved by applying a scratch coat to fill the hollows and take up some of the unevenness followed by one or two more coats which are then worked to a flatter surface.  By carefully selecting appropriate aggregates it is sometimes possible to match existing renders and successfully repair failed patches without the need for complete re-rendering. Hollow or detached plaster can sometimes be consolidated and saved.  We would be pleased to give you a free consultation and quotation on this or on any of our services listed.

Time of year: 
Please note that care should be taken not to apply lime mortars and renders when there is a risk of frost damage.  It is important to prevent frost crystals forming within the mortar soon after application.   

re-rendering
Rendered Wall
Re-Rendering
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