tiling over bitumen

[White Room]

Hi and welcome

 

[john36]

new to this ( clean and prime with sbr ! ) whats this sbr :hurray:

 

[White Room]

SBR Bonding/Admix agent

(Do not be tempted to use cheaper PVA which moisture breaks down)

SBR Bond is a latex based - Highly suited for priming areas before tiling

Water resistant bonding/priming agent and admixture for use in areas subject to humidity, dampness and continuous water contact

Improves water resistance of cement mixtures by forming a reinforcing polymer that increases long term durability and flexibility of the mix on renderings and floor screeds adhesive etc.

Can be diluted up to 3:1 with water - follow instuction on bottle

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[john36]

thanx for getting back to me wheres the best place to buy this can you get it at bq or avoid there and go somewhere else

 

[davy_G]

thanx for getting back to me wheres the best place to buy this can you get it at bq or avoid there and go somewhere else

Dave at Tiletrader. He da man!

 

[White Room]

Heres a link Tradetiler.com Home

 

[Ajax123]

Not wanting to throw a spanner in the works or anything but are you sure its solid concrete under the bitumen. If its an oldish coucil house it could be magensite.
These screeds were very common in council houses from early 50's to mid 80's and were often coated with a bitumen topping to keep moisture out cos they become very unstable when wet. They are a complete Bu**er to stick anything to cos of the high levels of chlorides in them. They are no longer considered suitable for floors to receive floor coverings.
Identification is relatively straight forward - they are usually a pinkish or greenish hue but this colour will be masked by the bitumen. They are electrically condictive so if you use a resistance type damp proof meter you will get an off the scale result for damp even when bone dry. If it is magnesite best thing would be to take it out and relay with something else.
Hopefully you are right and it is concrete.

 

[Derry]

hi, welcome to the forums

 

[bassman]

:welcome: To the Forum :guitarist: