Boarshurst Lofts

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Roofs and Roofing

Converting your Loft will change your Roof System. Learn more.

Picture of dormer with slate covering
Picture of dormer with slate covering

A sound roof keeps your house warm and dry and it is essential when converting your roof into a habitable space care is taken to ensure roof integrity is maintained, the roof structure is exceptionally well insulated, and the roof structure is ventillated to avoid condensation.

There are many styles of roof and different types of roofing material so ensuring your roof remains weatherproof is part of our skilled service. We are experts in:

  • Felt flat roofs on dormers
  • Tiles and pitched roofs
  • Slate roof systems
  • Glass window systems
  • Liquid plastic systems
  • Leadwork and lead cladding
  • Insulation and ventillation

We are experts in planning and converting roofs of all types to ensure a continued long roof life with minimal maintenance.

Weatherproofing Roofs

Loft conversions require a structurally sound and weatherproof roof. Our survey may identify any roof issues such as damp, leaks, decay or damage needing repair during conversion, although please bare in mind this is incidental and not the purpose of the survey.

Changes During COnversion

The conversion itself will usually requires an aperture making within the roof for access and materials, and another for Velux skylights or dormer windows.

Our qualified roofers use scaffolding to access the roof and remove tiles and cladding as required.

Our joiners are familiar with the individual elements of roofs and will identify and repair any identified roof defects to preserve the integrity of the roof space.

Types of Roof Damage

Roofs with chimney stacks which often need any lead apron or flashings damaged by exposure to 'the elements' - rain, wind, frost, snow and heat, replacing.

Weathering stresses roofing materials and can cause wear, warp, decay and damage. Therefore, while we are on your roof we ensure it is weather proof and suitable before more delicate conversion work begins.

Roof Materials

Loft plans usually specify the roofing products and materials to install or use to clad a roof. They are generally designed to closely match existing styles, colours and qualities.

Examples below are of commonly used roof coverings.

Roof Tiles

Roof Tiles
Roof Tiles

'Plain' tiles are made from either concrete or clay and are hung on and nailed to the batten below. Types of tile:

  • Standard - double lap - plain tile
  • Eves or top course tile
  • Tile and a half tile
  • Half round ridge tile
  • Curve valley tile
  • Bonnet hip tile

Double lap tiles are the traditional tile used on pitched roofs.

Slate Roofs

Slate Roof
Slate roof tiles

Slates are formed from slate, a natural and dense material that is split into thin sheets and cut into small units to attach to pitched roofs.

Each slate tile is fixed by nail to the roof. A too shallow a roof pitch and high wind will make slates susceptible to vibration, which can cause noise, breakage and loose tiles.

Flat Roofs - Felt Roofing

Felt Flat Roof
Velux roof picture

Flat roofs are generally made water and weather proof with layers of asphalt rolled roofing, mastic and a top layer of thicker felt and perhaps protective shingle chippings.

Metal Roofs

Metal and lead roofs are a premium product due to the material cost and installation skills required. They are generally installed on dormer sides and on commercial property roofs. We install so the leadwork panels, flashings and junctions remain fully intact over an extensive period and remain free of any tearing and lifting.

Roof Window Flashings

Velux window flashings
Velux window flashings

Most loft and dormer conversions have VELUX skylights installed into the roof. They site within a double strength frame constructed within a roof aperture.

VELUX window flashings are very well designed and are exceptionally hard wearing.

The window flashings are available for different toof types, so they overlap, creating a weatherproof seal around the window.

VELUX have designed their flashings to be compatible with tiles, slate, flat or felt and metal roofs.

We install the windows often between rafters. Multiple window units cab be paired side by side or as a bank. Roof pitch will also influence some choice of flashing used.


The chimney stack is common to most older homes and it will often require inspection to ensure the lead strips (flashings) are intact and sealed within the mortarand that brick mortar is pointed and sound.

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