Fixing decoupling membrane

[SandyFloor]

I'm currently pricing a job 60sq. mtrs. 600/440 porcelain over ufh under screed. As I've never fixed membrane and this is a substantial area I'm unsure of how long it takes and would appreciate a rough guide price for labour. Alternatively some idea of time to fix 60 sq.mtrs in a reasonably open area would help. Thanks

 

[White Room]

How much would you be paying for ditra for that meterage

 

[SandyFloor]

Was looking at the Genesis G mat £6.15/MTR.

 

[Daz]

It doesn't take too long to install but if you are unsure then advise your customer that it is part of the prep work which can only be quoted on a day rate due to so many variables. You can then give an estimate of one day but with a caveat that it may be more, that way you are covered.

Good luck.

 

[SandyFloor]

I'm not worried about being slightly out on it as I just put it down to learning and experience. I just don't want to be a mile out but a day to fit seems about right.

 

[White Room]

Say about £15 am2 supply and fit

 

[Daz]

Is that what you are charging Mark? :yikes: That's on a par with 3 days money for fixing. Have you got any jobs going? I can make myself available for that sort of daily dosh :smilewinkgrin:

 

[White Room]

Only on smaller stuff😳

 

[SandyFloor]

I'm thinking one days labour plus 7no. 20kg addy plus membrane. How does that sound? plus a little mark up.

 

[White Room]

Remember your there to make money, don't do everything at cost......

Add 15% to the materials

 

[SandyFloor]

My other issue is they may wish to proceed without decoupling. My intention is to quote decoupling separately with a recommendation to using it. If they go against my advice and I proceed without decoupling I'm concerned I would still be held liable if the tiles fail as my quote would prove I was aware of risks involved of not decoupling. I'm thinking of wording it as a recommendation to lower risk and should they instruct me to proceed they would be accepting the higher risk. Does that makes sense?

 

[White Room]

Do they realise that the underfloor heating needs to fired up before tiling comencess

 

[SandyFloor]

Yep, they know that and also the procedure after tiling to wind it up very gradually.

 

[White Room]

Your in Scotland so your prices will differ dramatically from my area, if you make mistakes thats just part of the learning curve

 

[doug boardley]

I don't think your a million miles off with your guesstimation Sandy, obviously the addy coverage is determined by how flat the floor is.

 

[andy-p]

My other issue is they may wish to proceed without decoupling. My intention is to quote decoupling separately with a recommendation to using it. If they go against my advice and I proceed without decoupling I'm concerned I would still be held liable if the tiles fail as my quote would prove I was aware of risks involved of not decoupling. I'm thinking of wording it as a recommendation to lower risk and should they instruct me to proceed they would be accepting the higher risk. Does that makes sense?

Sandy , i walked away from a 300m2 heated screed floor recently because the bloke dithered on using a decoup mat , if the tiles start cracking you can be sure your in the mire because you knew but went ahead anyway, who needs the hassle ??

 

[DavieA]

Why does ufh need to be fired up before tiling? Ive never heard that before, is it only for wet uhf systems or electic too?

 

[DHTiling]

Just wet UFH,, because you need the screed to expand / shrink etc from the heat..

 

[DavieA]

hi dave , what if the wet ufh isnt in a screed and is under chipboard which is overboarded with ply?

how long does it have to be on for and temp etc before tiling?