Method and report

1. STEP 01

   Walk-through

   We walk the space with your facilities lead and agree what’s in scope: rooms, floor type, access windows, escort and MOP requirements.

2. STEP 02

   Method statement

   Before anyone enters the room you receive a written method statement: sequence, areas, materials, tile-lift plan, and stop-work rules. Nothing starts until you approve it.

3. STEP 03

   Clean

   Hearth & Hall works top-down and to the plan. No blowers or compressed air. Damp, never wet, and no wax or finish on raised-floor tiles. Tile lifts are limited to a few adjacent tiles at a time.

4. STEP 04

   Count & report

   PMCS takes airborne particle counts and issues a written report.

You see what was in the air, what we did about it, and what was left.

Counts

By sampling location at 0.3, 0.5 and 5.0 µm, before and after the work where verification is included.

Comparison

Each location against ISO 14644-1 class limits. Class 8 is the usual reference for data center white space (ASHRAE TC 9.9 guidance).

Findings

A photo log of conditions found and a short, risk-ranked list of observations.

Record

Date, sampling plan, and the instrument used with its calibration date.

Instrument

Counts are taken with a calibrated particle counter; its calibration date is on every report.

Note

ISO 14644-1 classifies a room’s airborne particle cleanliness. Our report records the counts measured on the day of sampling against those classes. It describes your room on that day; it is not a certification of the room or a rating of our company.

Materials

Neutral cleaners appropriate to the surface, with SDS on file and shared on request.

What we never do

• Use blowers or compressed air
• Wet-mop raised-floor tiles
• Apply wax or floor finish
• Lift more tiles than the plan allows
• Prop doors or break containment without approval