Six weeks, no float
Most floor screeds are programmed around other trades. A school screed is programmed around a date that cannot move. A summer holiday is roughly six weeks, and into that window go strip-out, structural work, first fix, floors, second fix, decoration, furniture and a deep clean, on a site that must be signed off before pupils return.
The screed sits in the middle of that chain. Every day it slips comes off the end of somebody else's trade, and the last trade before handover has no slack left to give. That is the single fact that should drive every screeding decision on an education project.
Drying time is the real risk, not laying time
A pumped screed goes down fast. A large teaching floor plate can be covered in a single visit. What takes time is drying: reaching the moisture content that a vinyl, linoleum or resin covering requires can take considerably longer than the laying itself, and it is the item most likely to push a September handover.
So the programme conversation starts at the end. What is the floor covering, what moisture content does its manufacturer require, and how many days does that leave between the pour and the fitter? If the answer does not fit the window, the system has to change: a different binder, a thinner build-up from an accurate deck survey, or forced drying designed in from the start rather than improvised in week four.
Choosing the system for a school site
- Flowing screed for speed and coverage. Pumped, self-levelling, and the best method where underfloor heating is specified. Large plates go down in one visit and the crew leaves the same day.
- Self-compacting screed where evening working is out. It places and levels without power floating, so no crew returns to the building after hours. On a site with caretaking hours and safeguarding conditions, that is often the deciding factor.
- Screeds on precast planks for new teaching blocks. Modern school frames are commonly precast plank or hollowcore. Our placing booms reach upper decks without craning plant up, which matters on a constrained school site with nowhere to stand a crane.
Occupied schools: term-time work
Not every education project gets a clear building. Term-time work happens in evenings, weekends and half-terms, in areas released and handed back in sequence, with separation from pupils as a condition of access. Safeguarding, agreed routes and hoarding go into the method statement at tender, not on the day. Pumped methods help here for the same reason they help in hospitals: the material arrives through a hose, not a barrow run down an occupied corridor. Our flowing screed work at John Radcliffe Hospital shows the same discipline applied to a live clinical building.
What we bring to the window
Directly employed teams, our own pumps and two of the only three track-mounted placing booms in the country. No reliance on the hire market, no waiting for somebody else's plant in a window with no float. We programme backwards from the return date, and we tell you at tender if the window does not work. Constructionline Gold registered, which most Tier 1 contractors will ask about before anything else.
Common questions
How long does a school floor screed take to dry?
Can screeding be done while a school is occupied?
Which screed suits a school with no evening working?
Do you screed upper floors on new teaching blocks?
When should a screed contractor be involved?
Got a school project with a fixed window? Send the drawings and the finishes schedule to info@trentcs.com or call 01283 480110, and we will tell you straight whether the window works. More on how we approach the sector: floor screeds for schools and colleges.