Intumescent and sprayed fireproofing: plan the specified split in scope
A hotel's restaurant columns are specified with intumescent while back-of-house steel has sprayed protection. The project manager needs coordinated packages based on actual products and locations.
Read the specified locations and requirements, then plan each protection system as its own scope. A smooth architectural appearance can be a reason for choosing an intumescent product on exposed steel: a manufacturer's interior product summary expressly describes that use. The project's designer must explain this project's selection. Appearance alone does not authorize a substitution or establish how long either package will take.
Put the requirement into the work record
- Map the split before pricing activities. Mark the restaurant, service areas and transition members on a common plan. Compare structural, architectural and fireproofing information and raise conflicting boundaries. Give both contractors the same location references so a beam at a doorway is not included twice or omitted by both.
- Ask what the selection must achieve. Confirm the actual design, finish expectations, exposure conditions and permitted system for each area. Record the designer's answer to an unclear requirement. Do not assume that all visible steel needs one coating family or that any smooth coating meets the required protection.
- Obtain separate execution proposals. Ask the qualified contractors for their preparation, application, checking and release activities using the selected products. Include interfaces with primers and topcoats where applicable. Compare the proposed work records and responsibilities rather than treating one spray rate as a substitute for the other package's plan.
- Build durations from evidence. Ask what quantity, access, crew arrangement and working conditions support each estimate. Separate application from waiting, review and repair activities. A short application allowance can still leave an area unavailable to another trade; neither coating family has a universal faster or slower programme.
- Coordinate shared resources and boundaries. Identify enclosure, access equipment, protected routes and neighbouring work the packages need. Put responsibilities and change notifications into the look-ahead. Check that one contractor's dust-producing or access activity will be reviewed before it overlaps the other contractor's planned coating conditions.
- Compare consequences before changing scope. If a proposed substitution changes finish, sequence or cost, route it through the specified technical and commercial process. Keep the approved selection in the programme until a change is resolved. Record the revised boundary and assumptions so the pricing and field plans remain consistent.
Common mistakes
- Using one production allowance for both systems.
- Inferring the designer's full intent from exposed steel.
- Changing a specified system to recover a date without review.
Checklist
Compare the actual packages
- Common location and boundary plan.
- Specified system and finish for each area.
- Preparation and application proposals.
- Supported duration assumptions.
- Shared access and conditions arranged.
- Reviewed changes carried into scope and cost.
Check your understanding
Should the intumescent package automatically receive a longer duration than the sprayed package?
Show the answer
No. Compare the actual quantities, products, conditions, work stages and contractor proposals. A coating family's name is not a duration estimate or a substitution decision.
