UNDERLAY Wetroom kits for tile floors with sheet membrane tanking and square drain

Epoxy cement faced with rigid foam core to fit on boarded or solid floors. Supplied complete with drain, choice of square grids and 5 or 10m² of sheet membrane tanking. Many sizes available.

  • Sizes


    800 x 800 x 22mm


    900 x 900 x 22mm


    1000 x 1000 x 22mm


    1000 x 1000 x 22mm


    1200 x 800 x 22mm


    1200 x 900 x 22mm


    1200 x 900 x 22mm


    1200 x 1000 x 22mm


    1200 x 1200 x 22mm


    1200 x 1200 x 22mm


    1500 x 800 x 22mm


    1500 x 900 x 27mm


    1500 x 1050 x 25mm


    1600 x 900 x 27mm


    1800 x 900 x 27mm


    1800 x 900 x 27mm


    1900 x 950 x 30mm


    1500 x 1500 x 27mm

  • Underlay Plus Drain Kit

    Drain and Fitting Aid for Underlay Plus Kits

    • 34 l/m flow rate. Tested under 15mm head of water.
    • Includes drain fitting aid.
    • Includes stainless steel or tile insert grid or upgrade to solid stainless steel.
    • 50mm water seal trap.
    • Adjustable outlet angle.
  • Stainless Steel Grid Options

    Chose a standard grid or upgrade to a designer, 5mm brushed stainless steel grid.

    Standard Grids

    Art Deco

    Tile Insert

    Designer Grid Upgrades

    5mm brushed stainless steel






  • Hydromat Sheet Membrane Tanking

    Hydromat Sheet Membrane Kit

    • High tack self adhesive sheet membrane.
    • 1000mm wide sheet.
    • Used on both floors and walls.
    • Can be tiled over immediately.
    • Fleece top provides maximum key for tile adhesive.
    • Suitable for use with underfloor heating.


    5m² Kit Contents

    • 5m² Hydromat membrane.
    • 10m Hydromat joint tape.
    • 2 x Self adhesive internal corners.
    • 1 Litre primer.
    • Butyl sealant.
    • Roller.


    10m² Kit Contents

    • 10m² Hydromat membrane.
    • 20m Hydromat joint tape.
    • 2 x Self adhesive internal corners.
    • 1 Litre primer.
    • Butyl sealant.
    • Roller.

    Additional individual items available to extend coverage.

    Hydromat Membrane

    5m² Code HM5 / 10m² Code HM10

    Hydromat Joint Tape 10m

    Code HMJT

    Hydromat Internal Corner

    Code HMIC

    Hydromat External Corner

    Code HMEC

    Primer 1 Litre

    Code 1LP

    Butyl Sealent

    Code HMBS


    Code HMR

  • Tile Backer Board and Formers

    Create floors, walls, dividers, bath sides, alcoves and seating with Tile Back Board.

    • Superior multi-purpose thermal construction board.
    • Extruded polystyrene core.
    • Reinforced cement polymer coating.
    • Insulating thermal properties reduces heat loss.
    • Excellent compressive strength.
    • Designed for the application of all tile types.

    Click through for full details:

  • Adaptations and Additions


    Accessibility adaptions for healthcare situations or for the home. Full Kits for building regulation compliance or individual items.

    Additions & Extras

  • Frameless Glass Screens

    Shower Screens Made Easy

    Visit our BetaScreens site for an array of solutions to suit any shower space. BETA Screens are distinguished by an uncompromising, full glass, high-end aesthetic, offering minimalist luxury at an affordable price. The effect is fully frameless with pure sight lines that harmonise with both traditional or contemporary features and fittings. Our knowledgeable staff can quickly and easily guide you through different configurations, offer advise and provide instant quotations over the phone if required.

    • Fixed Screens
    • Fixed Screens with Returns
    • Hinged Return Panels
    • Hinged Screens
    • Free Standing Screens
    • Enclosures
    • Doors
    • Bath Screens
    • Coloured Glass, Etching and Printing
    • Hardware, Fixings and Seals

    Visit the BetaScreens site

  • Fitting Instructions PDFs