Subfloor preparation for LVT - Victorian mid terrace

Discussion in 'Subfloor Preparation' started by Fremantle, Aug 29, 2024.

  1. Fremantle

    Fremantle New Member

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    Hi all,

    I'm looking for some assistance in producing a specification for my builder to prepare my hallway (including 3 steps) and kitchen floor subfloors in preparation for LVT (Moduleo Roots 40 Midland Oak). The hallway is a suspended timber floor and the kitchen is currently terracotta tiling over part suspended timber / part solid floor. The state of the subfloor is not known yet, but other than looking dated and some deteriorated grouting, the kitchen floor appears to be in good condition and is solid with acceptable give in the suspended floor area. There is a 40mm level difference between the hallway and the kitchen tile floor level consisting of a 30mm screed and 10mm thick tile. The hallway will also have two doorways to the front and rear carpetted sitting rooms.

    We have had some damp issues due to raised exterior ground level and deteriorated brickwork, but are having these rectified by getting a french drain installed, replacement of damaged bricks and repointing.

    The flooring contractor has already quoted for 6mm Flooring Grade Plywood in the hallway and Stopgap 1200 Pro in the kitchen. Multiple layers of 6mm ply to level the hallway/kitchen transition. They also propose that the LVT be installed after kitchen units and not be installed to floor edges below kitchen units. This saves some money and eliminates the risk of the kitchen fitter scratching the new floor, but feels unfinished to me.

    My queries are

    - are there any obvious errors in this approach?
    - should I get my builder to prepare the subfloor or leave it to the flooring contractor?
    - should the hallway also have a levelling compound applied?
    - is Stopgap 1200 Pro the appropriate self levelling compound?
    - any recommendations for dealing with the part solid/part suspended timber subfloor?
    - how to deal with the hallway/sitting room transitions
    - how to deal with the hallway/kitchen transition? Thicker ply? Extending the levelling compound to the foot of the steps?
    - installation of LVT flooring before or after kitchen units? If before, all the way to wall edges?

    Thanks in advance,

    Fremantle
     
  2. merit

    merit Well-Known Member

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    You will need to get a moisture reading from the old concrete and the timber floor before laying LVT over it. Its likely you will need a liquid dpm on the old concrete side and you will need to make sure the timber is dry before laying LVT over it
     
  3. dazlight

    dazlight Super Moderator

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    Kitchen in 1st I’d say.
     

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