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BAL Prime APD Arylic Primer – Bulk Buy – For Walls and Floors



Acrylic primer for walls and floors

It is a rapid-drying acrylic primer suitable for priming wall and floor backgrounds prior to the fixing of ceramics, mosiacs and natural stone tiles in dry or wet interior and exterior environments. BAL Prime APD stabalises dusty surfaces and reduces the porosity of backgrounds and may be used undiluted on plaster walls, tongue and groove floorboards. Use diluted on plaster walls (if dusty or porous), Anhydrite and cement floors. Use diluted on plaster walls when using ready mixed adhesives.

Perfect for priming walls and floors, BAL Prime APD offers a number of benefits for the fixer. Available in 2.5 litre bottles, the product can also be used with BAL levelling compounds and the BAL WP1 Tanking System. BAL Prime APD can be used undiluted and diluted and helps stabilise backgrounds prior to tiling in interior or exterior environments.


  • preparing floor and wall backgrounds prior to fixing of ceramic/mosaic and natural stone tiles
  • dry/wet – interior/exterior


  • plaster walls when using a BAL cementitious powder adhesive
  • tongue & groove floorboards

USE DILUTED 1:1 with clean water on and a second coat:

  • dusty/porous plaster walls when using a BAL ready-mixed adhesive
  • cement: sand screed/concrete floors
  • Anhydrite Screeds

MAY BE TILED AFTER: 30 minutes

You can add this product to your order, however there must be a pallet/half/three-quarter-pallet in the cart to checkout.

Need a custom deal? 0333 344 2655 or info@buythepallet.co.uk

£18.10 +VAT

£18.10 +VAT

BAL Prime APD further information

BAL Prime APD is a rapid-drying, coloured, acrylic primer for tiling substrates.

Typical Coverage:

SIZE: 2.5L12.5 - 25m225-50m2

Use BAL Prime APD for

A modified acrylic polymer dispersion for preparing wall and floor backgrounds prior to fixing of ceramic, mosaics and natural stone tiles in dry or wet internal and external environments.

  • May also be used with BAL ACRYBASE, BAL LEVEL MAX Levelling Compounds and with BAL WP1 waterproof coating for walls and floors.
  • BAL PRIME APD isolates products containing calcium sulphate such as gypsum plaster and anhydrite screeds from cement-based adhesives.
  • Provides surface strength to friable surfaces and reduces the porosity of porous backgrounds/bases, preventing the formation of air bubbles and prolonging the flow time with levelling compounds.
  • Extending the open time of BAL Ready mixed wall tile adhesives.



Worktops (1)XShowers (a)(4)X
Limited Movement / Vibration (8)Heated Screeds (8)


Brick/Concrete (3)
Rendering (3)
Lightweight Blockwork
– must be rendered (3)
Cement:Sand Screed (3) (8)
Plaster (2)(3)(4)
Plasterboard (4)
Tile Backer/Fibre
Cement Boards (4) (6)
Tongue & Groove
Floorboards (2)(7)
Overlaid Timber Floors –
15mm min. (4)(6)(9)
Sulfate Screeds (5)(8)

(1) Tiles must be grouted using BAL EASYPOXY AG.
(2) Prime with undiluted BAL Prime APD
(3) Primer – Dilute 1 part BAL PRIME APD to 1 parts water by volume (4) In wet conditions tank out with BAL WATERPROOFING KIT FOR SHOWERS.
(5) Prime with BAL PRIME APD, first coat with 1:1 with water, second coat undiluted 90°C to the first.

(6) Check suitability for the intended purpose with the manufacturer. (7) When used with BAL RAPID-MAT.
(8) May be used in conjunction with BAL RAPID-MAT.
(9) Seal back face and edges with undiluted BAL BOND SBR.

Not recommended for use on paint, metal or existing glazed tiles. Note:
(a) Do not use shower for at least 2 weeks after completion of grouting – BS 5385:Part 4

Restrictions: NOT suitable for

Painted surfaces, existing non-porous surfaces (existing tiles), Epoxy coatings, some manufactured board systems (check with manufacturer first), BAL RAPID-MAT and in total immersion areas (e.g. swimming pools)


Composition: Modified acrylic polymer dispersion.

Colours: Green/blue.

Pack sizes: 2.5 litre

Key Features:
– Rapid drying primer.
– Primer is green to help ensure that a complete and even
coating is obtained.
– Stabilises dusty tiling substrates.
– Reduces background porosity. Drying time: 15-30 mins. (at 20°C)



BAL PRIME APD can be used on the following areas as a primer before tiling:

Before priming with 2 coats (second coat applied at 900 to the first):

  • Use undiluted:
  • – Plaster walls (when using a BAL cementitious adhesive.
  • – Tongued and grooved floorboards (when using BAL SINGLE PART FASTFLEX or a BAL flexible cementitious adhesive with BAL RAPID-MAT).

Before priming with 1 coat:

  • Use diluted 1:1 with clean water on:
  • –  Plaster walls (when using a BAL ready-mixed adhesive),only if dusty or porous.
  • –  Cement screeds/concrete/brick/rendering

Before priming with 2 coats (second coat applied at 900 to the first):

  • Use diluted 1:1 with clean water first coat, second coat undiluted:
  • –  Calcium sulphate screeds.
  • –  Anhydrite screeds.

The following substrates may require priming on the face of the board. Check suitability for the intended purpose with the manufacturer.

Before priming with 1 coat:

  • Use undiluted or diluted 1:1 with water by volume (refer to board manufacturer for guidance:
  • –  Lightweight tile backer boards
  • –  Calcium silicate boards
  • –  Fibre-reinforced cement sheets

For levelling or waterproofing, refer to BAL product data sheet for priming guidance i.e. BAL Level Max or BAL WP1


  1. Shake container well before use.
  2. Can be used undiluted/diluted 1:1 by volume of BAL PRIME APD and clean water and thoroughly mix.


Usage procedure
IMPORTANT NOTE: Do NOT use in temperatures below 5°C.1.

  1. Ensure surfaces are free from dirt, grease and other loose materials. Brush down highly polished surfaces with a stiff bristle brush before priming.
  2. Apply 1 – 2 coats of BAL PRIME APD using a clean brush from a container, diluted or undiluted as appropriate (See SURFACE PREPARATION above). Allow to dry between coats.NOTE: If using on floor, do NOT allow to form puddles.
  3. Ensure even coverage.
  4. Allow to dry thoroughly for 15-30 minutes before applying adhesive.
  5. Clean product from tools using clean water.


12 months under normal dry conditions. Protect from frost and damp.

View other products by BAL here.


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