Magnesite Flooring Deterioration

• Assess magnesite condition across the floor — firmness, delamination, cracking and surface breakdown.
• Identify moisture source and confirm waterproofing condition below and around the flooring.
• Use a moisture meter to measure moisture levels in the magnesite and substrate.
• Break out locally to inspect the structural slab, steel deck or reinforcement below.
• Assess extent and severity of corrosion to embedded reinforcement or steel substrate.
• Confirm extent of magnesite removal required before proceeding.
• Document affected areas with photos and mapping prior to any works.

Typical Repair Methodology

Magnesite removal and reinstatement must be planned carefully. The moisture source must be resolved before repair. Final scope and substrate treatment to be confirmed by the project engineer.

1. 01.Identify and address the moisture source before commencing any removal or repair.
2. 02.Isolate affected areas and establish containment to manage dust and debris from removal.
3. 03.Remove deteriorated magnesite flooring by mechanical means — grinding, scarifying or jackhammering as appropriate.
4. 04.Take care during removal not to damage the structural slab, steel deck or waterproofing substrate below.
5. 05.Clean all magnesite residue from the substrate surface after removal.
6. 06.Expose and assess the structural substrate fully once magnesite is removed.
7. 07.Treat corroded reinforcement or steel deck substrate as directed by the engineer.
8. 08.Apply concrete repairs to the slab substrate where required before waterproofing.
9. 09.Install an approved waterproofing or moisture barrier system to the prepared substrate.
10. 10.Allow waterproofing to fully cure and complete any required testing before overcoating.
11. 11.Install new approved flooring system compatible with the substrate and building use.
12. 12.Ensure adequate curing and protection of the new flooring system during construction.
13. 13.Record QA photos, product details, batch numbers, test results and completed hold points.

Before / After Repair

Typical magnesite flooring condition before and after remedial repair.