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Listed Cottage in Whalley Clitheroe Lancashire

Lime Pointing 16c Listed Building by Builders in Whalley, Clitheroe, Lancashire.

On this project in Whalley Nr Clitheroe, Lancashire we had to point the front elevation of this Listed Cottage using a Lime Based Mortar. We also installed new Cast Iron Guttering & Down Pipes to the front elevation. New Timber Windows were also made for the front elevation. The Building has been pointed with a cement based mortar. This cement mortar was not allowing the building to breathe causing Damp. The Moisture in the stonework had caused the external stonework to degrade. The building was constructed around circa 1630.

Stone Garden Wall in Whalley Clitheroe

The project also entailed the re-pointing of the adjoining Stone Garden Wall. The cement mortar pointing had to be raked out, this was done using small air tools. Our Building Contractors took care not to damage the existing stonework of the garden wall. The wall was not cleaned using out super heated cleaning system "doff" or Wet Blasted because it was unnecessary.

These old Period Stone Wall should never be Sandblasted, the Sandblaster use to higher pressure when Cleaning Stone Wall & damage the stone. When a stone wall is sandblasted it removes around 2-3mm of the surface of the stone. This sandblast removes all the features from the stone. Our contractors use a low pressure sandblasting system that causes minimal damage to the stone.

Cement Pointing on Listed Building in Lancashire

Here you can see the damage caused when a Stone wall has been pointed with cement mortar for a long time. The cement mortar has started to detach itself for the masonry units.

With having the cement mortar pointing on for around 30 years the cottage has Damp Problems and moisture on the internal walls.

Some times Rising Damp can be mistaken for wall that need pointing with Lime Mortar. The Rising Damp has similar properties.

The Damp Walls in this old building were fine once the exterior had been pointed with Lime Mortar.

Decayed Rotten Timber Window Frame in Whalley Clitheroe

The Damp walls have rotten the timber window frames in the cottage. Timber window frames are often painted with the wrong exterior paint. We had new softwood timber windows made, these had to be a like for like replacement. The new wooden windows only had single glazing. The cement pointing on the Listed Building has been on for a number of years and started to de bond from the stone. Timber windows on Listed Buildings will outlast most other types of windows. The internal windows to this Listed Building in Whalley was installed to help with heat loss and sound proofing. We can manufacture windows & doors from listed and historic buildings. Our joiners are skilled in the manufacturing of traditional timber windows.

Decayed Stone on Listed Building in Whalley Lancashire

Here you can see the damage caused by using cement pointing, the moisture in the wall has been evaporating via the stone. This had caused the stone to decay. The Stone in Whalley & Clitheroe does tend to a soft Sandstone. Our team of Restoration Building Contractors saved as much of the original as possible but some Stones had to be replaced like for like. The cement based mortar was removed by hand tools i.e. hammer and chisel. Using hand tool prevents damage to the stone wall. The cement pointing had mostly de-bond and was easily removed. Once our contractors removed the pointing we wash the stonework to remove any dirt and debris from the joints. The stone was then gently brushed down to remove the stone that had decayed.

Lime Pointing needed on Listed Building Whalley Lancashire

Our team of Specialist Builders on this project in Clitheroe had to take every care not to damage the stonework on this 16C Listed Cottage. It is not often you see stonework this damaged by having cement pointing on. Even tho the cement was around 30 years old it was very strong. Our team had to use specialist tool to finely cut out the cement joint. Our restoration team of skilled experts carefully remove the pointing from this damp listed building in whalley. The building was still in excellent condition for its age. Some the stone walls had moved and bowed slightly but an amazing listed building. Our craftsmen are expert skilled building contractors in Lancashire.

Holes in external Stone Wall

The original Lime Mortar around the Stone window set had decayed, this was causing water ingress into the internal walls. All the vertical joints to the window set had to be removed due to decayed Lime Mortar. Our team of Builders carefully scraped away the decayed mortar then flushed the joints. On most heritage or historic building in Lancashire have issues around the stone windows and door jambs. The lime mortar decays under the cement mortar and creates voids behind the cement mortar. This allows water to penetrate the water and cause damp issue internally on the listed building. If there is lime plaster on the internal wall the dampness will show as the breathable paint will change colour. When our contractors lime point these voids we make sure they are packed full with lime mortar.

Cast Iron Guttering & Downpipe Listed Building

The Cast Iron Down Pipes had some corrosion inside the pipes. The Cast Iron Guttering had decayed to a degree that it would all need replacing. We had the Cast Iron Guttering & Down Pipe factory painted, this minimize installation time. We still use linseed oil putty for jointing together the section of Cast Iron Guttering, Modern day silicon's do not stand the test of time.  We installed the Cast Iron Guttering on standard Rise & Fall drive in brackets. Our builders install Cast Iron Guttering to all types of historic, heritage and listed building. Cast iron guttering will out last any plastic guttering. We sometimes install cast aluminum or extruded aluminum guttering to. If the cast iron guttering is in good condition we can sandblast the guttering and down pipes to remove the rust and then paint with a zinc primer.

Cement Pointing Whalley Clitheroe Lancashire

A modern day General Builder would probably insist on pointing this Listed Building in Whalley, Clitheroe with a general cement mortar.

Our team of Restoration Contractors understand the need for the building to breath.

On this photo you can see how the water will track down the wall into the cement joints. This area of pointing is directly above a window, where it will probably be dripping internally. The Lime Pointing on the external will provide a seal for the masonry, but will still allow the wall to breathe & flex.

Stone Wall Rising Damp Whalley Clitheroe

Our team of builders have carefully removed an area of cement pointing below the window. On this Restoration project a large number of voids had to be filled using Lime Mortar.

This lower area of masonry could be showing signs of Rising Damp on the internal wall. Damp is often found by Mould Growth on the internal walls.

It would, after Lime Pointing be advantages to Lime Plaster the internal walls. Lime Plaster allows the internal wall to absorb and expel moisture much better than Gypsum Plasterers.

Lime Pointing Listed Cottage in Whalley Clitheroe Lancashire

We have used a Lime Based Pointing Mortar to the right of this photo. The area has been covered with a damp hessian sheet to prevent the Lime Mortar from drying to quickly. Unless strict rules are followed Lime Pointing will fail. The tell tale signs of a Failed Lime Pointing Mortar is that it will colour to a light white. Its is most important that the lime mortar pointing is covered with damp hessian sheeting. Lime Pointing needs to be undertaken by specialist contractors who have skilled craftsmen. Damp and wet walls on historic buildings make the building loose its heat and have a low thermal efficiently. As with the jamb stones on the building the general stonework has void created by the cement pointing eroding the original lime mortar. These voids are filled prior to any lime mortar pointing taking place.

Lime Pointing on Listed Building Cottage

Here a small area of Lime Pointing is complete. This Lime Pointing will now allow the wall to breathe, also with a slow fracture point the lime pointing will also move with the Listed Building.

Any moisture in the wall that rises from the ground (Rising Damp) will be able to evaporate.

The stones on this Listed Building will now stop decaying as the moisture Damp in the wall can escape through the Lime Pointed Joints.

Lime Pointing

We used a locally sourced sand to use that would blend with the stone colour. The lime mortar has to be post cared for up to 5 days from finishing the lime pointing. Here you can see the lime pointing drying out. It is most important that the lime pointing does not dry out to quickly. The application of lime pointing can not be rushed and one skilled lime pointer will only lime point around 4-5 sqm per day if done correctly. The joints of the stonework have been washed out to remove all the dust and debris from when the cement pointing was removed. The lime pointing was gently brushed back with a stiff churn brush to open out the surface area of the lime mortar. Listed building in Lancashire have to be re-pointed with lime mortar, this is part of the listed building consent. If a cement based mortar was used the council could take legal action.

Lime Pointing Garden Wall Garden Wall pointed with lime mortar. Once the lime pointing mortar has had time to set we removed the hessian sheeting and let the lime mortar pointing dry out slowly. The lime pointing has dried to a very pleasant colour. Now the stone walls have been pointed the dampness has dried out and the listed building damp free. Our specialist builder contractors work around Whalley and Lancashire undertaking Lime Pointing, Lime Rendering, Lime Plaster and heritage roofing work on Listed Buildings. Most general building contractors are not experienced in heritage skills, or traditional building.

 

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