weeping 40mm push fit waste pipe joints

I have been trying to sort out a shower that was installed by our house builder in 1997.

I have encountered several problems this is one of them.

I found out the the builder had installed a bath trap so I replaced it with a McAlpine STWM-95 shower trap.

I used a McAlpine flexible pipe to connect the trap to the existing 40mm waste pipe.

After I tested the pipe work I noticed that one of the joints in the 40mm waste pipe was weeping.

The type fitted is shown in the images. It is made by Marley to BS5254PP the other markings are WS40 WPB41.

I was wondering whether the rubber joints might have hardened with age meaning I will need to replace the components.

I noticed that the segments of 40mm pipe I had removed must have been cut using a hacksaw because the edges are pretty ragged. Should I buy a proper pipe cutter to get clean edges or will that be unnecessary?

Is there a reliable way to stop the joints leaking? or should I simply buy replacements?

Is there a more reliable connector system I could use that would be compatible with the existing 40mm waste pipe?

Use McAlpine multifit fittings and you won't go far wrong

Yup, it's marley's old push fit, Yes, the seals become harder with age. That and if the burr's weren't removed from the pipe before pushing in, it could have knicked the seal. Use some 80grit paper or a stanley to remove the burr's from the pipe.

As Denso suggests, McAlpine Multi compression fittings, they're the dog's appendages IMO.
http://www.mcalpineplumbing.com/media/cat/33.pdf

I'm surprised that the builder used push-fit fittings and not solvent weld (Ok. I'm not surprised). The most reliable system is solvent weld but you would probably have to change your pipe as well.

Thanks for all the replies. Yes, the builders hadn't removed the burrs, so I ended up buying a some new waste pipe together with some compression fittings from Screwfix. They have a remarkable resemblance to the McAlpine products. It seems to be OK now.

Certain large House Builder, (used to use a Helicopter in their TV adverts if anyone remembers!), built a number of houses round this area. All have push fit waste used, I always thought its cheap and nasty, especially considering what prices they were selling the houses for!

Indeed Hugh, over the years I have discovered so many things the builders have done that even as an amateur, I would have been ashamed of. If ever I buy another new build I will try to find an experienced tradesman to look at the workmanship before I sign off on the purchase.

In all honesty, I would never buy a 'new' house. The build quality is often very poor, with trades trying their best, but being pushed to keep costs down to maximise the developers profit margins. Having seen the standards offered by a number of the national house builders I'd be very wary of buying anything put up in the last 30 years, personally I think the 1950's/60's was the epitome of house building in this country.