Four-Stage Asbestos ClearanceLondon and the South East

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Here at Lambeth Scientific Services Ltd

We are a licenced asbestos testing company that supports businesses and homeowners with all their asbestos testing requirements. Also known as a Certificate for Reoccupation, four-stage clearance is necessary to determine whether a building recently cleared of asbestos is safe for reoccupation.
Four-stage clearance is a thorough assessment that must be completed by an independent, UKAS-approved asbestos specialist. Comprising visual inspections and the study of air samples, four-stage clearance is necessary after the removal of asbestos or any repair or encapsulation works that might disturb any known asbestos in your premises.
All four stages of the assessment must be passed before a building can receive final sign-off and re-open. When it comes to four-stage clearance, our team is meticulous and can guide you through the process from start to finish, assisting you with any questions along the way and managing your expectations.

Asbestos 4 Stage Clearance

Below is a breakdown of what four-stage clearance entails:

Stage 1 A preliminary check of the site condition

Our initial check will form our first impressions of the work undertaken, the material removed and where from. We will note the overall condition of the site, its cleanliness and also review the building contractor’s paperwork. Our team will seal off the area and restrict access to anyone not directly involved in the assessment process.

Stage 2 A thorough visual inspection

Stage 2 is a critical step to determine if the asbestos has been effectively removed from the site. Our analysts will search for any visible traces of suspected asbestos in the form of settled dust on surfaces, flooring or in airlocks. We will inspect vents and exit points carefully to determine the work has been completed in full.

Stage 3 Air monitoring

If our team is satisfied that no visible traces of asbestos are present, then we move on to air monitoring. This process involves collecting a measure of air using specialist equipment to determine the presence of asbestos fibres. Unlike its solid form, asbestos fibres are usually invisible to the naked eye, making air sampling crucial to determine its presence.

Stage 4 Final assessment

Our analysts will remove the enclosure, checking once more for any visible traces of dust and will make sure the area is visibly clean. Once we are satisfied the area is asbestos-free, we will issue a Certificate of Reoccupation.
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Experts in Four-Stage Clearance

We work diligently to ensure that four-stage clearance is completed as quickly as possible so that rehabilitation or demolition of the premises can go ahead without delay. If traces of asbestos are still present, we will advise you on what steps to take to make your building safe again.
Our team prides itself on our professionalism and will perform a thorough assessment whilst taking every precaution to protect everyone who may come into contact with contaminated materials.

Why Choose Lambeth Scientific Services Ltd?

There are several reasons why clients throughout Surrey and beyond turn to us for reliable asbestos testing.
We have worked with a variety of clients, including local authorities, the MOD, hospitals, private individuals and schools
We have vast experience in both commercial and domestic settings
All our testing is performed in-house in our specialist laboratories
We have held UKAS accreditation for laboratory air testing since March 1995
We have attained ISO/IEC 17025:2017 accreditation for asbestos fibre counting procedures
All of our work is done in accordance with the in-house methods based on Health and Safety Executive (HSE) Guidance HSG 248: Asbestos: The analysts’ guide

Get in Touch

Do you want to speak to us about four-stage clearance in Woking, Guildford or wider Surrey? Contact us today to find out more:
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