PVA before screed

Discussion in 'Builders' Talk' started by Kerry5455, Aug 1, 2018.

  1. Kerry5455

    Kerry5455 New Member

    I’m currently doing an extension up on my house & im doing the majority of the work myself.
    I’m about ready for the screed to go down - there are a lot of different opinions about this.
    Do I need to PVA the floor first? Is this worth while doing or do I just crack on with the screeding?
    Thanks
     
  2. Jord86

    Jord86 Screwfix Select


    No PVA. SBR instead.
     
    KIAB, Kerry5455 and masterdiy like this.
  3. DIY womble

    DIY womble Well-Known Member

    I'm sure SBR is great , in the old days we would wet the floor up with a cement slurry never had a problem, go for SBR , but just saying for chat
     
  4. CGN

    CGN Screwfix Select

    Be careful in this weather that it doesn't dry out too quickly and crack. Put some poly sheet over it.
     
    DIY womble and Kerry5455 like this.
  5. KIAB

    KIAB Super Member

    Last edited: Aug 2, 2018
  6. DIY womble

    DIY womble Well-Known Member

    SBR ebay £12.90 , 2 day delivery
     
  7. KIAB

    KIAB Super Member

    Kerry5455 likes this.
  8. Kerry5455

    Kerry5455 New Member

    Does the PVA / SBR still have to go down before a latex levelling?
     
  9. Jord86

    Jord86 Screwfix Select

    Yes, it aids adhesion and bonding strength.
     
    Kerry5455 likes this.
  10. Kerry5455

    Kerry5455 New Member

    Thank you
     
  11. 14th edition

    14th edition Well-Known Member

    Just used SBR prior to floor levelling compound in our extension and one or the other [or both] has made the place stink like blocked drains!!
     

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