Professional Civil, Structural and Environmental Engineers in Bishop Auckland

Efforts are made to minimize any visual impact on the flooring. For example, tiles are carefully removed and replaced whenever possible. In some cases, you may see a small round area of different coloured concrete, particularly in garages. This will be explained and permission sought beforehand.

The testing process is designed to identify the presence of these materials, and any anomalies or unusual behaviors are carefully observed. If problematic materials are found, samples may be sent to the lab for further analysis. Understanding the in-fill composition helps in taking the necessary precautions to prevent or mitigate any potential damage.

Symptoms include uneven floors, cracks in the screed, obvious heaving, difficulty with internal doors, horizontal cracks in external walls, efflorescence on wall faces, and more.

The need to send samples to a lab is determined through careful observation, including the way concrete behaves when drilled and the presence of any anomalies or unstable materials. Stable materials include Dolomite, Clean gravels, and natural clays. Others like Cleveland shale, colliery spoil, slag, certain sands and gravels, ash, and brick rubble are often sent for further analysis.

Remedial works are repairs required to fix in-fill problems. Tips for choosing a builder:Ensure they are experienced and knowledgeable. Verify their approach (e.g., removing the kitchen, knowing the depth of fill, involving a local building inspector). Be cautious of quotes without seeing the report or knowing the depth of fill.