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Scaffolding Erected on House Extension

Building Stone Farmhouse Extension

On this project we were involved with the Groundwork, Construction & Roofing of this Stone House Extension. The project took 12 weeks to complete. Our Builders worked on this House Extension during the winter months making construction difficult.

We install the Extension foundation up to floor level then fill and compacted the site level. A access scaffold was erect to assist in the erection of the blockwork & stonework, the scaffold was also used in the stone slate roofing process.

 

Builders Building House Extension

With the erection of the scaffold complete we progressed with the laying of the concrete block. We used a 4" concrete block on the extension. The wall was made up of a 4" internal concrete block, 60mm of PIR insulation, a 50mm cavity, a 4" backing block with a solid fill 8" to the face of the stone work.

Our builders started on the two blockwork walls, the blockwork was take up to eves level. We then built the stone work up to eves level. As we were constructing the blockwork we install the first floor timber for the house extension. A wall plate was fixed to the existing farmhouse gable wall, we then fixed the new floor joist the wall plate.

Concreting Floor on House Extension

When the blockwork had been built to internal floor level we started building up the internal floor. First we laid 200mm of crushed limestone and compacted with a vibrating plate, a blinding of sand was laid and compacted to prevent the stone layer puncher the DPM. On the sand layer we install a 1200g plastic visqueen this is to prevent damp in the floor.

Over the visqueen we install a reinforcing steel mesh to prevent the concrete floor slab from cracking. The concrete was then laid to a depth of 150mm this was leveled with a laser level and floated. We had also installed pipe work to allow for the installation of new main water in and a fuel line for the boiler.

Builder Laying Stonework on Gable Pike

Once the blockwork & stonework had been built up to the eves level our builders started working on the new gable pike. In this photo you can see the wall build up with the 4" concrete blockwork internal wall, cavity & external stonework.

Our builders used a standard cement based mortar for the blockwork & stonework. The stonework cement joints were rakes out as they were later to be pointed with a lime pointing mortar to match the exiting stonework on the farmhouse.

On site we had telehandler to assist in lifting the stonework and blockwork to the scaffolding. We also installed a scaffold to the internal of the extension to assist with the installation of the steel perlins & timber roof rafters.

Stonemasons making Window Sill

Our Stonemasons made the new window & door sets for the house extension. Each window set had to be hand carved to a specific size. The stonemasons used new cut square section stone to carve out the sills.

The Stonemasons used powered grinders with diamond flat discs to carve out the centre section of the stone window set. Once the masons had shaped the stone sill they rubbed the stonework smooth with rubbing blocks. Our stonemasons are specialists in repairing historic building & churches, some of the stonework includes replacing string courses, fitting corpings stones, redressing ashlar blocks & face damaged stone.

Stone House Extension

Here you can see the stone window that the stonemasons made in place. Our stonemasons also carved up the new quoin stones on the new gable wall. The Builders coursed the stonework in with exiting farmhouse. A rain water down pipe was installed over the joint, we applied a flexible silicone joint over the movement joint.

Our builders have constructed House Extension, Barn Conversions, Roofing & Slating works.

Building Farmhouse Extension

The house extension was constructed on time & on budget. We a builders based in Lancashire, we specialize restoring listed buildings using traditional techniques using lime based mortars.

 

Farmhouse Extension

Rear view of the new house extension. Like the front elevation our builders matched the stone courses with the existing farmhouse stonework. A movement joint was installed were the new house extension meets the existing farmhouse. This joint was sealed with a high grade silicone and cover with the rainwater pipe.

The rear door is a large french doorway with a cut sandstone set carved with by our masons. The windows & doors on the extension were made in hardwood.

Builders Installing Steel Purlins on House Extension

Here we are installing the steel perlins for the roof structure. Concrete pad stones were installed over the two courses of blockwork, the steel perlins were then rested on the pad stones.

On the existing gable elevation of the farmhouse we cut out pockets to install concrete pad stones to install the steel Perlins on. Our builders worked of the internal scaffold to install the Perlins. Once the Perlins were in place our builders cut the rafter line for the blockwork on the pike.

Steel Purlins Installed

Once the pockets in the stone gable wall had been opened up the steel roof purlins were installed. The steel purlins had treated timber plates installed, these timber plates will enable us to fix the timber roof rafters to the purlins.

The existing stone slate roof was left on the farmhouse as we constructed the new roof for the extension. The existing roof was used to help set the levels for the new stone slate roof.

There was also a chimney on the existing gable elevation, our stone masons remove the chimney from the gable wall as it was no longer in use.

Roof Stripped of Stone Slates

When the new extension roof was complete we installed a temporary water proof membrane. We then stripped the existing stone slate roof as there was water ingress problems. The underlet on the existing roof was the old bitumen type which after about 20 years becomes very brittle.

The existing battens were removed, all the stone slates were stacked on the scaffold. The scaffolding was erected at just below eves level enabling easy access tot roof area.

Repairing Farmhouse Roof ready for Stone Slating

We had a local scaffolding company erect a tube scaffold, they installed the scaffold to our kwikstage we use to construct the stone extension. The roofing works took place in November so we had to catch the windows in the weather.

We installed new lead aprons around the chimney stack, this is where the worst of the water ingress was. We make 2 new lead aprons to the front and rear stone slate roofs. As the stone slates were replaced we installed new lead soakers & flashing's. We also removed the chimney pots and re-bedded. The stonework on the chimney was re pointed using a lime based mortar.

Stone Slating Farmhouse Roof

This is the front elevation of the stone extension. Our roofers fit the reclaimed stone roofing slates using aluminum pegs onto treated timber battens. We had to bring in 12 tons of reclaimed stone roofing slates to use on the roof. The new extension took around 8 tons of slates & 4 tons for the replacements for the exiting stone slate roof.

We also installed 2 new light tunnels, one to the front elevation & 1 to the rear. These were needed as there was a internal passage in the farmhouse that had no natural light.

 

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