Leak detection for special schools and SEND settings
Special schools carry hydrotherapy pools, hygiene suites and higher hot water demand than mainstream schools, and disruption itself is a safeguarding risk rather than an inconvenience.
The estate at a glance
- Typical sites
- Usually single-storey and accessible throughout, with a hydrotherapy or sensory pool, changing and hygiene suites, a soft play or sensory room, therapy spaces and a large transport apron.
- Typical pipework
- Higher hot water demand per pupil than a mainstream school, with thermostatic mixing valves throughout for scald protection, and pool plant if there is a hydrotherapy pool.
- Who buys
- School business manager or the trust's estates team, working closely with the head and therapy staff
- Budget route
- Condition funding, with special school pupils weighted in the School Condition Allocation formula
- Working window
- Holidays, and even then with care. Many special schools run holiday provision and respite
Why disruption is a clinical problem, not a logistical one
In a mainstream school, closing a corridor for a day is an inconvenience. In a special school it can remove a pupil's route to their toileting facility, take a hoist out of service, or change an environment that a child depends on being unchanged.
That is why the plan matters more than the method here. Which room, for how long, what the alternative is, and who tells the families. Most special schools will accommodate a survey readily if that conversation happens first.
The estate profile a survey has to work around
A special school has more building services per pupil than any other education setting. Hoists, accessible bathrooms, therapy rooms, a hydrotherapy pool and on-site laundry all sit on the same water and heating systems, and all of them matter to the school day.
- Hydrotherapy or sensory pools with their own plant, dosing and heating
- Hygiene suites with multiple hot outlets, all on thermostatic mixing valves
- Underfloor heating in therapy and sensory rooms, chosen for a flat, warm, obstacle-free floor
- Detached respite or residential accommodation on a longer buried supply
Where the loss usually is in a SEND setting
Hot water dominates. A special school uses far more of it than a mainstream school of the same size, and the fittings that deliver it are used hard. A passing mixing valve or a shower that never fully closes runs continuously and costs twice: the water and the heat.
- Hydrotherapy pool losses, distinguished from evaporation by a measured top-up record
- Thermostatic mixing valves passing to drain
- Hygiene suite outlets and shower trolleys
- Underfloor heating circuits losing pressure in therapy rooms
- Laundry supplies and drains
Locating without closing a room the pupils need
Non-invasive matters here for two reasons rather than one. It avoids disturbing asbestos-containing materials in an older building, and it avoids taking a therapy space out of use while somebody chases a pipe. Thermal imaging over an underfloor circuit and tracer gas into an isolated section find the position without lifting a floor.
For a hydrotherapy pool the sequence is: measure the loss against evaporation, isolate the circulation and hydrostatically test the shell, then test the pipework separately. That distinguishes a structural leak from a pipework leak before anyone empties a pool that takes days to bring back to temperature.
Safeguarding where pupils may not be able to report a concern
Special schools apply their safeguarding arrangements strictly, because many of their pupils cannot report a concern in the way a mainstream pupil could. Expect enhanced expectations on escorting, on who may be unsupervised, and on advance notice of exactly who is attending.
Expect also to be asked about behaviour around pupils: no photography, no lone working near pupils, and a briefing on any pupil-specific considerations before you start.
Working in a school that may not close for the holidays
Many special schools run holiday clubs, respite and extended provision, so the estate is not necessarily free in August. Where residential provision exists, it may not close at all.
Plan around the school's own calendar rather than the local authority term dates, and expect the usable window to be shorter than a mainstream school's.
What it costs and the funding weighting that applies
Special school pupils are weighted at 4.5 times in the School Condition Allocation eligibility calculation for 2026-27, which affects whether a trust containing special schools crosses the threshold for an allocation rather than a competitive bid.
A hydrotherapy pool repair is the item most likely to need a capital case, because it combines a structure, plant and a long period out of use, and because the pool is often central to the school's therapeutic offer.
| Location | Why it happens here |
|---|---|
| Hydrotherapy pool structure | circulation pipework and balance tank, where a loss is masked by high evaporation from a warm pool |
| Changing and hygiene suites with hoists | shower trolleys and multiple outlets on long secondary hot water runs |
| Thermostatic mixing valves that pass | which waste hot water continuously and are easy to miss |
| Laundry facilities | which many special schools run on site and which have a commercial duty cycle |
| Underfloor heating in therapy and sensory spaces | where a screed leak cannot be chased without closing the room |
| Buried supplies to detached therapy blocks and respite accommodation | See the detection approach above. |
What to do now
Take a meter reading tonight and another in the morning. If it has moved with the site closed, call and quote the figure; that single number shortens the survey and sets the scope before anyone attends.
Questions schools ask about this setting
Our hydrotherapy pool needs topping up daily. Is that a leak?
It might be evaporation. A hydrotherapy pool is held at around 32 to 35 degrees, so it evaporates considerably faster than a school swimming pool, especially if the hall is not humidity controlled. The test is to measure the drop against a bucket of pool water standing on the side, so evaporation affects both equally, and to log the metered top-up over a week.
Can you work while pupils are on site?
Detection work is quiet and mostly outside occupied rooms, so usually yes with escorting. Anything that changes a room a pupil relies on should be planned with the school rather than decided on the day, and that includes moving equipment or closing a bathroom.
Will you need to empty the hydrotherapy pool?
Not to establish whether it is leaking, and not to test the pipework, which can be isolated and tested separately. Emptying is a last resort because a hydrotherapy pool takes days to refill and reheat, and the school loses the therapy programme while it does.
Sources for this page
- Source: Department for Education, Get Information About Schools: all establishment data extract (opens in a new tab) ().
- Source: Department for Education, School capital funding (opens in a new tab) (). This figure is restated annually; check the current edition.
Last reviewed . How this site sources and dates its figures.