stained ceiling tiles school light fittingAs most of you are aware I have been conducting various CIF bid surveys over the last week or so – bids for the government’s Condition Improvement Fund for Academies and Sixth Form Colleges. One of the most common features we come across in our inspections are stained ceiling tiles and stained plasterboard ceilings. What is causing these stained ceilings? Whilst the staining might appear to be simply cosmetic, it could be concealing something a lot more dangerous. In this post, I’ve put together some examples of my recent inspections to show you some of the likely causes.

Causes of Water Damage and Stained Ceilings

The first sign of potential problems with your roof will probably be a stained ceiling. This water damage could be caused by a variety of issues:

  1. Failed Flashings – if the flashings around your flat roof or penetrations such as roof lights, windows or pipework have failed, this might cause small amounts of water to enter the roof space and stain the ceilings.
  2. Leaking pipework – many roof spaces are used for pipework for water supplies and heating. The water staining might simply be caused by a leak in the system.
  3. Overflows – equipment which uses water such as boilers, water tanks and cisterns might have overflows which indicate a problem with the equipment. Some of these overflows might be housed within your roof space and be causing the stained ceiling.
  4. Blocked Outlets – if the outlets that direct rainwater off your roof are blocked, this might cause the water level to rise above the upstands and enter the roof space.
  5. A Failed Roof – the waterproofing on your roof itself might have failed, either through damage or having come to the end of its natural life.
  6. Interstitial condensation – water vapour from inside your school buildings may be condensing in a badly designed or badly installed roof, and this water may be leaking back into the ceiling void.

The last two examples are particularly significant, because over time a large quantity of water can be involved. A failed roof or a badly designed one can cause a vast amount of damage and cost a lot of money to put right. Here are some examples of the results.

Results of Water Ingress

Tell-tale peeling of the lining paper suggests a localised leak:

stained ceiling peeling lining paper school

When we removed an area of ceiling you could see that the structural deck had completely failed causing a major risk to the children and teachers in the classroom below. This roof was so poor it would have been dangerous to walk on it.

stained ceiling failed roof leak school

Stained ceiling tiles, when removed, revealed that the deck here was being damaged by failed upstand details. The water was soaking electricity cables, providing another hazard to students and staff:

stained ceiling tiles failed upstand detail electricity school

Water ingress from failed rooflight details, this is above a changing room. During periods of heavy rain there can be pools of water in the changing room!

stained ceiling tiles school changing room cables

Large amounts of water staining, but in this case, not caused by a leak! The cause here is interstitial condensation due to no Vapour Control Layer in the build-up of the roof above:

stained ceiling tiles interstitial condensation roof leak school lighting

What You Should Do about a Stained Ceiling

Whilst the first sign you’re likely to notice is staining on the ceiling tiles, don’t let the damage get to the point where there is a big hole. Unless the damage is inspected, it is very difficult to know what is the cause.

Get an inspection of the damaged area and the roof above. We carry out such inspections for free. An inspection will identify the likely cause, and confirm whether you do need a survey of the roof (which we will also carry out for free). We also help make a CIF funding application for you if it is appropriate. You can find out about our free service here.

Schools Should Not Suffer from Stained Ceilings

Children spend more of their waking hours at school than at home – they shouldn’t have to spend them in an environment with dripping water and puddles, buckets on the floor and damaged ceiling tiles, when they are trying to learn.

I believe our learning environment has a huge impact on us and if I was sat under these ceilings I would wonder if anyone cared. It really is frustrating seeing the condition of our schools, where our children are expected to learn, and teachers must work. The least they should expect is to be in a safe, clean and enjoyable environment.

It doesn’t have to be like this, however. Funding is available to pay for repairs, and the school doesn’t have to pay for the inspection, specification and funding application support if you come to us. If you’ve got a stained ceiling, get in touch before it becomes a much bigger problem.

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About the author – Ian Dryden

Ian is an experienced specification manager with ten years working in flat roofing. He works with our technical team of surveyors, technicians and roofing specialists at SIG Design and Technology to deliver better flat roofs on schools across the country.

Registered Office: SIG Trading Limited, Adsetts House, 16 Europa View, Sheffield Business Park, Sheffield, S9 1XH. Registered in England No. 01451007 VAT No. GB 487 01733