What is Asbestos Cement?

Asbestos cement roof sheets or “AC Sheets”, is a roofing / cladding material, in which asbestos fibres have been used to reinforce thin rigid cement sheets. Asbestos Cement was widely used as a building material until it was outlawed in the UK in 1999.

What does it look like?

Asbestos cement roofing sheets, come in many different profiles. The most typical Asbestos roofing sheet is probably “Big Six” or “Profile Six”. A typical example is shown.

When is it a problem?

The product life of asbestos roofing sheets can vary but generally will last between 25 – 40 years. This means that products that were installed before asbestos was outlawed as a building product are coming towards the end of their usable life.

If your roof is leaking or roofing materials have been damaged, you will need to contact a specialist. That is where we come in.

Asbestos Roofing is not a problem if it is undamaged and likely to be undisturbed. In this situation you should monitor it as per your asbestos management plan.

Asbestos Roofing – Over Roof

Asbestos over sheeting allows you improve thermal elements, whilst introducing a new roof covering.

Over sheeting allows you to:

  • Improve external appearance
  • Improved thermal performance
  • Less disturbance than full strip and re-sheet
  • Less costs than stripping the roof, may be more cost effective

The following factors will need to be considered:

    • Structural ability of the existing roof to accept additional weight
    • The disturbance to occupants whilst the works is being undertaken
    • Access and storage requirements needed for the works i.e. skips and material storage
    • The contractors proposed method for drilling and phasing of the works
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New steel roof

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Insulation added to increase thermal performance

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Spacer support system

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Existing asbestos cement roof

Asbestos Roof Strip & Re-Sheet

Asbestos roof replacement allows for full refurbishment to your pitched roof.

Full roof replacement allows you to:

  • Improve external and internal appearance
  • Potentially improve the working environment for occupants
  • Easily alter lighting levels to optimum performance
  • Improved thermal performance
  • Completely remove potentially hazardous material

The following factors will need to be considered:

  • The costs associated with hazardous waste disposal
  • The disturbance to occupants whilst the works is being undertaken
  • Access and storage requirements needed for the works i.e. skips and material storage
  • The contractors proposed methods and phasing of the works

What to expect from your roofing contractor

It is important when choosing a roofing contractor to deal with asbestos roofing products that the company is competent to carry out the works.
Has your contractor provided the following:

  • A Construction Phase Plan (CDM 2015)
  • Training Certificates relevant to the work
  • Comprehensive Method Statement & Risk Assessment for the works
  • Benefit
  • Internal Appearance Improved
  • Easy to alter lighting levels
  • Hazardous Material Removed
  • On Site Installation is Fast
  • Minimal Disturbence to occupants
  • Insulation can be upgraded
  • Asbestos Over Roof
  • No
  • No
  • No
  • Yes
  • Yes
  • Yes
  • Asbestos Strip & Re-Sheet
  • Yes
  • Yes
  • Yes
  • No
  • No
  • Yes