Wednesday, February 24, 2021

Method Statement of Walls Plastering Using Dry-Zone Damp-Resistant Plaster

Preparatory Works:

  • Arrive on-site, and register attendance with the client/Main-Contractor Attend worksite health and safety induction/training. 
  • Obtain permits to work (PTW) from the client.
  • Wearing hard hats and safety shoes, identify areas where proposed works are scheduled and ensure the plan correctly represents the area of proposed works. Correctly inspect and verify the validity of the surveyor’s Generic risk assessment, and work to this. Make proper confirmation of the suitability of the walls to receive treatment. 
  • Confined Space entry safe system of work (SSOW), check work conditions in basements, cellars and other voids.
  • Unload tools, devices, plant and materials, ensuring no obstruction to other worksite users, public right of ways, public roads or emergency services. Observe PTL’s Manual Handling Policy.
  • Visually make a close observation and check the condition of all tools, equipment and plant, also making sure that electrical testing is valid.
  • Route power cables to the worksite, ensuring that these do not create a trip hazard, nor can become damaged by sharp surfaces or nipping actions.
  • Ensure the first aid kit is easily available and first aider assistance is available from the client.
  • Ensure adequate fire extinguisher provision is nearby.
  • Work at height will be conducted as explained in the surveyor’s risk assessment.
  • Attach Vacuum Dust Collection System (VDCS) to demolition drill and hack off existing wall plaster, render and paint, wearing general eye protection, half-face rubber respirator with Recommended P3 dust filters, and general duty gloves. Observe PTL’s policies about Hand-Arm Vibration and Noise.
  • Waste to be bagged off and removed from the local worksite. To minimize manual handling/ergonomic risk, bags are not to be over-flowed; try to use barrows and trolleys when practicable.

Application Works:

  • Before starting, the work, Wear rigger gloves and eye protection, remove skirtings, fixings and render/plaster to expose the line of the recommended and proposed Damp Proof Course (DPC)- [mortar bed]
  • Wearing eye and hearing protection, and observing [Organization/Company] policies about Hand-Arm Vibration (HAV) and Noise, drill 12 millimetres injection holes into the masonry at centres no greater than 120 millimetres, and to a depth detailed in the supplier’s technical instructions.
  • Vertical Isolation Zones (VIZ) to be formed in the Party Wall Abutments (PWA), Chimney Breast Abutments (CBA), as indicated in quotation and or report.  Making drill to terminate below-suspended timber floor elements where applicable. Drilling height adjoining solid floor to be altered to make sure that the damp-proof course is not bridged by solid floors. 
  • Describes high ground levels/solid floors adjoining walls scheduled for treatment and make sure that drilling/injection pattern takes account of this appropriately.
  • Wearing Polyvinyl Chloride (PVC) rubber gloves, chemical goggles and impervious workwear, fill the injector applicator unit with a Safeguard Dry zone cartridge.
  • Insert the nozzle into drilled holes and fill to within 1 Centimeter
  • Make proper housekeeping and identify distant areas on the proposed worksheet drawing. Make good the injection holes ruled out from treatment.
  • Wearing Nitrile rubber gloves, chemical goggles (or face shield with safety glasses underneath), using a drill or mixer, add the plaster to 6 litres of clean water (per bag) and mix for 3-4 minutes.  Using a trowel, apply a “rough” coat of circa (five-5 millimetres) thickness to act as an anchoring coat.  Apply the topcoat after 24 hours.  The overall thickness should be 20 millimetres and the topcoat is mixed with 5 litres of water per bag.
  • Finishing plaster is to be applied over the Dry zone Damp-Resistant plaster after 14 days.
  • Angle beads were specified only to be fixed over a top coat of the Dry zone Damp-Resistant Plaster.

Party Wall Injection:

Operative to assess the thickness of party walls, where possible.  Identify areas where walls are 230 millimetres thick or less, to allow for short drilling from one side only. Operative to identify walls over 340 millimetres thick, which will require (where practicable) drilling from both sides. Thick walls are easily accessible from one side only to be step drilled and injected. Areas of excluded/inaccessible party walls, e.g., the rear of fireplaces, to be identified on sketch plans which form part of the worksheet. 

Job Finish:

All wastes or other objects will be removed from the worksite at the end of each day to avoid obstruction.  Wastes will be removed from the client’s site at job completion using PTL’s transport, where this has been included in our contract.

Supervision, Competence and Training:

Project Engineer and/or Senior Plasterer on-site will be accountable for the work and the monitoring of health and safety on the worksite:

Only wall plastering technicians competent and well trained in their respective fields and/or tasks, competent in health and safety terms and/or undergoing training as part of a supervised training programme, shall be permitted to work on worksite. All persons are to receive Induction Training before being granted access to the worksite. All operatives are eligible, competent and holders of the updated Construction Skills Certification Scheme (CSCS Cards), and these will be presented upon request by the Works site Manager/Engineer. Experienced operatives will supervise any trainees.

Plant, Equipment & Tools to be Used:


Hand Tools, Power extensions, 240/110 Volts transformer, lighting for construction site 


  1. Hard hats
  2. Safety boots
  3. General eye protection
  4. Chemical goggles
  5. Face shield
  6. Knee pads
  7. General work wears Impervious work wear PVC rubber gloves 
  8. Nitrile rubber gloves

Emergency Procedures:

The Actions were taken, both on discovering a fire or other safety-critical events, or when hearing the site emergency alarm, will be fully explained during the Site Safety Induction conducted by a [Organization/Company] representative of the worksite Works Manager/Engineer.  Also, the information will be provided on statutory emergency action notices displayed on site by the Site Works Manager. 

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