Window Installation RAMS: what contractors should include.

Window installation RAMS should explain how the specified frames and glazing will be delivered, stored, moved, positioned, fixed, sealed, protected and handed over without uncontrolled risk. They should identify the actual unit sizes and weights, openings, handling aids, access, tools, fixings, substances, interfaces, competence, supervision, hold points and change arrangements.

RAMS is common industry shorthand for a risk assessment and method statement. Under CDM 2015, contractors must plan, manage and monitor their work, provide appropriate supervision and instructions, and coordinate with other project duty holders. A generic list of hazards does not show how the proposed installation will work at the actual opening.

The RAMS should align with the relevant parts of the Construction Phase Plan, current drawings and window schedule, manufacturers' information, COSHH assessments, access arrangements and site logistics plan.

Define exactly what the window scope includes

State whether the work is new installation, replacement, frame-only work, pre-glazed units or separate glazing. Record the unit types, locations, dimensions and known weights; the opening construction; whether work is internal, external or both; and the proposed access and lifting method.

This guide and the linked template are intended for low-risk work using controlled access and a defined installation method. They should not be stretched to cover structural or curtain-wall glazing, large façade panels, cranes, complex lifting operations, rope or suspended access, fragile roofs, or any operation needing a specialist engineered or rescue plan.

Where those conditions arise, stop and obtain the appropriate specialist design, lifting, access or temporary-works information. A separate assessment and method may be required even when the units form part of the same package.

What information is needed before writing window installation RAMS?

Obtain and confirm, where relevant:

• current drawings, window schedule, specification, survey dimensions and manufacturers' installation details;
• frame and glazing type, unit dimensions and weights, whether units arrive glazed, and any orientation or storage limitations;
• the condition, construction and readiness of each opening, including approved fixing zones and details;
• delivery vehicle, unloading point, storage rack, transport route and method of getting each unit to its opening;
• the selected lifting or handling aids, their limitations, inspection requirements and compatible attachment points;
• workface access, internal and external edge protection, floor openings, working platforms and protection for people below;
• known electrical or other services near drilling and fixing locations;
• fixings, packers, membranes, foams, adhesives and sealants, with current safety data and task-specific COSHH assessments where required;
• temporary weather, security and opening protection if a unit cannot be completed in one operation;
• interfaces with occupants, the public, deliveries and other trades; and
• the principal contractor's rules, permits, inspection points and programme constraints.

Do not let RAMS invent fixing types, centres, edge distances, support details or tolerances. Missing or conflicting design information should be resolved by the responsible project parties before the affected installation starts.

Write the method in the order the work will happen

A project-specific sequence may need to describe:

1. confirming approved information, unit identification, opening readiness, interfaces and release to start;
2. accepting delivery, inspecting units and moving them to the planned rack or point of use;
3. establishing access, edge protection, exclusion zones and protection to occupied or public areas;
4. for replacement work, removing the existing sash, glazing and frame in a controlled order without destabilising the opening;
5. cleaning and checking the opening, then installing any temporary weather or security protection needed;
6. attaching the selected handling aid and moving the frame or unit into position within its limits;
7. packing, levelling and fixing to the approved detail while maintaining temporary stability;
8. installing glazing, beads, membranes and sealants in the specified order;
9. checking operation, fixings, seals, damage and any required test or inspection record; and
10. removing waste and protection, making good and handing over the completed area.

Include hold points before an old opening is left exposed, before lifting begins, before concealed fixings are covered and before access or exclusion controls are removed.

Critical controls to address in window installation RAMS

Delivery, storage and handling

Use the actual unit dimensions, weight, shape, centre of gravity, gripping points, travel route and final working position. HSE's construction manual-handling guidance identifies specialist devices and attachments for windows and says training is not a substitute for eliminating or reducing a risky lift.

• deliver close to the point of use where practicable and use stable, suitable racks;
• keep transport routes firm, level, lit, clear and wide enough for the unit and handling aid;
• select purpose-suitable lifting devices, trolleys, grips or suction equipment and follow their limitations;
• define the lifting team, communication, route, resting points and stop conditions; and
• do not label a lift safe merely because two people are available.

Open edges, access and falling objects

Removing or installing a window can create an unprotected opening. Follow the work-at-height hierarchy: avoid work at height where practicable, then prevent falls using a safe place or collective protection before relying on measures lower in the hierarchy. Select a guarded platform, scaffold, tower or other access arrangement suitable for the task and duration.

RAMS should state how the opening remains protected while frames or glazing are absent, how access equipment is inspected and used, and how people below are kept away from falling glass, tools, fixings or debris. Do not rely on an installer holding the unit as the only form of temporary protection or stability.

Glass damage, sharp edges and breakage

Inspect units before handling and quarantine damaged glazing. Define suitable storage, cut-resistant handling controls, eye protection where the assessment requires it, and a method for containing and removing broken glass. Keep hands away from unsupported edges and never use improvised attachment points.

Establish an exclusion area for any breakage response. The method should explain who stops the work, how fragments are collected without hand contact, which container is used and how the area is checked before reopening.

Drilling, fixings, dust and concealed services

Before drilling, confirm the approved fixing position and use current information and an agreed checking method for electrical cables, pipes or other services. HSE reminds workers that cables may be within walls, floors and ceilings.

Drilling or cutting masonry or concrete can create hazardous construction dust. Plan to reduce the amount generated and use suitable on-tool extraction or suppression where required. Respiratory protective equipment may support the controls, but it should not replace effective control at source.

Foams, sealants, adhesives and cleaners

A safety data sheet helps identify hazards, but it is not a task-specific COSHH assessment. Consider the product, quantity, route of exposure, ventilation, contact time, people nearby, storage, spills and waste. Substitute a safer product or process where reasonably practicable and prevent exposure before relying on personal protective equipment.

Weather, stability and occupied areas

Define wind, rain, temperature and visibility limits that affect handling, sealant use, access or temporary protection. Keep frames and glazing stable throughout the sequence and specify what happens if an opening cannot be completed before the team leaves.

For occupied buildings, plan appointment times, segregation, noise and dust controls, protection of finishes, safe routes, security and communication with occupants. Contractors must also consider members of the public and others who could be affected by the work.

How should the RAMS be briefed and reviewed?

The supervisor should brief the method to the people doing the work, check understanding and confirm that the correct units, information, equipment and controls are available. The briefing should cover the actual sequence, handling plan, opening protection, access, exclusion zones, fixing details, breakage response and stop-work conditions—not just collect signatures.

Review the RAMS if unit sizes or weights differ, openings are defective, access or lifting equipment changes, the installation detail is revised, hidden services are found, weather exceeds the planned limits, work enters an occupied area, controls are not working, or an incident or significant near miss exposes a gap.

The contractor remains responsible for planning, managing and monitoring its work. A principal contractor's review or acceptance does not transfer that duty.

Can a window installation RAMS template be used?

A relevant template can provide a structured starting point, but it cannot know the project's units, weights, openings, building condition, delivery route, access, lifting equipment, fixings, substances, occupants or principal contractor requirements.

The IMERI H&S Partners Window Installation – Low-Risk / Controlled Access RAMS template is currently available as a digital product. Its limited scope must be checked against the intended work. A competent person must assess the actual project, adapt the hazards, sequence and controls, coordinate it with current project information, and brief the workforce before use.

Buying or downloading a template does not make it approved, suitable for the project or ready to issue. The principal contractor may require further information or changes, and the contractor must still ensure the final method is workable and controlled.

When is project-specific RAMS support useful?

Support may be useful where units are unusually large or heavy, access is restricted, existing openings are uncertain, the building is occupied, multiple trades interact, deliveries are difficult, specialist lifting or temporary protection must be coordinated, or review comments show that the proposed method is incomplete.

For projects in Watford, Hertfordshire, London and the South East, send the window schedule, drawings, unit sizes and weights, delivery and lifting plan, opening condition, access arrangements, fixing method, programme and principal contractor requirements. IMERI H&S Partners can then confirm an appropriate scope for project-specific RAMS support.