Are you staying awake thinking(worrying) about this Panpete? (3.22am!)
I am putting my thinking cap on right away and will get back with revolutionary ideas for hiding skanky carpet which costs nowt. However, the first stumbling block is going to be lifting the carpet and removing the glued on felt. Have you actually done a test corner? Although this can be a bit soul destroying, if the felt backing had gone dry and crumbly, you might find it lifts with less effort than you imagined. There are solvents but, in an enclosed space, I wouldn't advise the use of industrial chemicals. If the trowel is not working well, you might also try a stiff plastic brush which attaches to a power drill-these can be bought in any ironmongers and look like the dust removal brush on a vacuum cleaner but are stiff and have a shank which fits into the drill chuck - this will make a lot of dust and you will need to wear a mask- which can also be bought for around 80p - £1.50 each. Which leads me to wondering what tools might be available to either hire or pay someone - some sort of industrial floor finishing machine? Next step would be to seal the concrete with a floor paint - an industrial one which can more or less be poured on (a self-leveling substance - will try and find details for you). There are going to be issues with warmth though - a concrete floor, even a sealed one, is a cold substrate to have to live with and I would be fairly tempted to simply buy the cheapest industrial cord carpet to lay over the whole thing (it can be tucked under the skirting and the door thresholds and maybe keep an eye out for a couple of cheerful rugs (I have my eyes on those cheap but bright woven plastic things which are made in Nigeria or Ghana or somewhere and imported by hippy merchants at festivals). I know this is just kicking the can further down the road but the obvious solutions (Click laminate or engineered flooring) is costly and can be tricky to lay well and vinyl sheeting is not really the budget option it used to be. If you do decide to go ahead and attempt to remove the carpet, another possible option might be to lay cork tiles - these are warm, easy and can be laid by an idiot (such as myself) and moreover, the remaining stuck felt particles will not really affect the look (flatness) of a fully glued cork floor (although you will still have to seal/varnish the cork. 35square metres is a substantial area and will cost around £300 with any sort of additional covering so it might be best to simply persevere, doing a quarter of the room at a time, and sealing the dusty concrete with a basic universal floor paint and putting rugs down. The main thing is not to throw good money after bad by doing a half-arsed job which still needs to be remedied further along. Am consulting with some of my builder friends.
Hi Campanula
I stay awake late a lot of nights, not particularly worried about this, and I don't have the money anyway at the moment, as I am getting some plastering work done and have to pay some more money towards double glazing that I am getting, which is funded by a home improvement agency.
I've lifted up small corners of a carpet and with the aid of a trowel scraper thing, the carpet itself will most probably be scraped up ok, but the glue is another matter.
With it being a rough un-screeded concrete floor, I don't think there is any way I will get all the dried in glue up.
I have a fear of some hand tools, I once tried using a hand sander on another job, and it was too uncomfortable, same with a jigsaw.
I know I won't need these tools, I just mentioned them as I find these types of things really uncomfortable, it's the vibration, I fear I will lose control of them.
My room is really large, so commonly used sized rugs tend to look a bit like a pea on a drum, I would need pretty large ones.
I don't know if I am allowed to put any paint on the floor, I have my lease document, and i will have a look.
I know that they are funny about non carpeted floors due to noise nuiscance, but my next door neighbour has put laminate floor straight onto the idential old felt backed carpet that I have. He said it acts as underlay, but I would have thought it would be a bit thin.
I appreciate all the ideas, I have never come across the hippy plastic rugs and don't know how much they would cost, or how big they are.
I did have a rectangle shaped rug and a circular one, but the room is so big they looked lost.
Cork tiles sounds a good idea. I don't know how well they would stick on a rough concrete floor with dried in glue on, maybe the roughness would provide a key.
Once again, I really appreciate your help campanula.
I would rather wait and get a better solution than rushing into something that will get on my nerves later on down the line, through poor wear and tear etc