Ply lining a floor without drilling?

[marky911]

Hoping for a bit of advice please. Our ground floors are asphalt e.g. the stuff they lay for roads. It' about an inch thick and forms the damp coarse for the floor. It is laid on the concrete base of the house.

Over the years, especially when subjected to heat from an open fire, furniture legs sink into the floor causing dips and troughs. I have a company lined up to smooth the floor out and fill any gaps which are left as we've taken some walls down, but we want to cover the floor with ply or similar to prevent any pressure points from furniture legs sinking into the floor again.

Drilling into the floor is not very wise due to it forming the damp coarse, so I need to stick it down with no-nails or some sort of glue. Or do I just leave it loose and rely on it not moving under the carpet. I'm guessing I'll need to leave an expansion gap around the edge of the room as per wood flooring?

Any advice welcomed. Thanks.

[marky911]

Yeah that looks like it should do the trick. Big tin mind.

I'll look into it properly when back at a desktop. Cheers B17NNS.

[marky911]

Fotic said:

What on earth? I've never heard of such a thing.

What in the dickens is going on? You've never heard of an asphalt floor? You've never lived man.

No I'd never heard of one either until we bought this house. It's apparently very good at what it does, well apart from your chair legs sinking into it if it gets too hot.

I may have a word with the builders and have it pulled up. That would give us 30mm to blind it off, put in a damp proof membrane and screed it. The guy guiding us through the project though said just have it patched or whatever then a thin layer of Aardit or Aardex or something. Worried a thin layer may break up though so thought some 6mm ply before the carpets go down would be enough to spread the load of chair legs etc.

Refurb thread here. Linked on my phone so may or may not work. I mention the floors early on.
Thanks for all the input. I'll look into everything. It only really affects the living room as the open plan kitchen has had a new floor for building regs and the asphalt area will be getting tiled over.

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Edited by marky911 on Friday 25th July 09:44

[marky911]

Sleep envy that's interesting. Can you remember the name of the product?

How thick was it? And did you have to blind it off and lay a damp proof sheet before putting it down?

[marky911]

Excellent thanks. I'm up there this afternoon so I'll see what the builders say.

Only problem is that room is getting plastered on Wednesday and I'll be reluctant to start ripping the floor up afterwards, so it may still be a case of working with what we have. I'll see.

[marky911]

Thanks Minemapper, yeah they knew how to do things during the war alright!

Off Topic
Hey Wozy, very kind offer. Ironically I'm back in crisis talks regarding the car. I think it's crunch time and it does have to go. Me and the wife both added another £5k to the pot the other month and the house has just sucked that up. We now have enough to finish the building work including bi-folds, front door, garage doors, etc, etc, but the money will gone. We then still need kitchen £15k-£20k, then driveways and landscaping. I've literally just text my mate Paul who wants it back, to say he can come and get it. He's got a 997 GT3 CS too.
To be honest the only thing I'm bothered about is the fact it's going to go up in value so it would have been a nice bit of pension plan I could enjoy in the meantime but at the same time, the basic thrill of car ownership has been lost with my GT3. I'm constantly watching the miles and not wanting to use it etc. I'll just go back to basics with something a to cheaper I think. We'll see.

Roofer, is that right?! As far as I'm aware the company who are going to patch the floor in and re seal the edges are going to pour molten bitumen in. I thought that would do. The plot thickens.

[marky911]

japgt said:

Just rip it up, put a dpm down and then insulation and ply onto battens effectively creating a floating floor.

To be honest japgt we need to try and work with what we have as I want the room plastered and ready to decorate in the next couple of weeks. Plus it would have to be dug up a fair few inches to get a decent amount of kingspan in and lay a timber floor.

Ok roofer, thanks for that. I'll ring the original company who said they could repair and check they are using asphalt not bitumen. If they are I think I'll just bite the bullet and pay the £500 for the repairs and get on with other things.

I'll update when I get sorted.

[marky911]

Trouble is some of the dips are an inch deep and screed is apparently only good for 6mm.

Also as mentioned in my refurb thread the asphalt was laid after the cement skirtings so I need to damp proof the 20mm band around the edge of the floor. I also have areas the width of a wall where walls have been removed. So about 150mm x 20mm deep. These need to be damp proof too.