Project Details

The Property

A typical two storey mid terraced property constructed from white bricks under Welsh slate roof with a lead covered front bay window to the main reception room. 

The Location

The property was located in the popular Bishopthorpe Road Area in York. 

Located off Scarcroft Road, the property is one of many peril terraced houses in this location. 

Most properties feature such bay windows which are covered in lead and offer a focal point to the front elevation. 

Specification of work

At GNR, we like to do things properly. 

When considering the replacement of a lead bay window, we offer a comprehensive service. 

Access scaffolding was erected to provide a safe working platform for our team. 

Thereafter, the existing guttering, flashings and lead coverings were removed and carted from site. 

In this instance, the existing substrate was also removed as part of work and repairs to the structure below were undertaken. 

Further, Insulation was added inside the small roof void on the bay window before we bagged reinstatement. 

A new timber perimeter gutter was fitted, which is a traditional detail on such bay windows. 

Thereafter, a new exterior grade plywood substrate was fitted to the bay and linked to the new gutter. 

Then, we set about lining the new timber gutter in lead to protect it against the elements. Due to the length, a central expansion joint was welded into the gutter lining. 

Once installed and lined with lead, new timber rolls were fitted to set out the lead bays. 

Once the joinery was complete, we set about installing the new code 5 lead sheet roof covering to the bay window. 

Further, new flashings were installed at the interface with the front elevation. 

The leadwork was finished with patination oil to complete the work before the scaffolding was removed. 

Further, as part of the course, a ventilation provision was formed into the roof void to allow a flow of cold air below the timber substrate and mitigate condensation issues in the future. 

The overall aesthetic is very attractive and provides a degree of kerb appeal to the property. 

The Materials

• Code 5 lead
• Exterior grade plywood
• Timber guttering
• Lead expansion joint

As a matter of course, where rolled lead sheet materials are used our go to supplier is The Reclaimed Company who stock a great selection of rolled lead sheet. 

The Project

Lead bay windows are a very important architectural feature on many Victorian terraced houses.

This particular example has a timber perimeter gutter that has been lined in lead with a central expansion joint.

The reason that we prefer to use timber is so that the angles of the bay can be precisely mitred so as to prevent leaking gutter joints in the future which could allow water to ingress into the property.

This particular detail provides a very functional and aesthetically pleasing solution to the lead roof on a Victorian terraced bay window top.

Further, once decorated to the underside, usually as part of the installation, the painted surfaces are protected by the lead thus reducing maintenance periods. 

Moreover, the decorative nature of the timber perfectly compliments the brick courses which usually sit under the eaves of such lead bay windows. 

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