BAL Prime APD further information
BAL Prime APD is a rapid-drying, coloured, acrylic primer for tiling substrates.
Typical Coverage:
UNDILUTED | DILUTED 1:1 WITH CLEAN WATER | |
---|---|---|
SIZE: 2.5L | 12.5 - 25m2 | 25-50m2 |
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.
BAL PRIME APD – USAGE & SERVICE CONDITIONS
Walls | ✓ | Floor | ✓ |
Interior | ✓ | Exterior | ✓ |
Dry | ✓ | Wet | ✓ |
Worktops (1) | X | Showers (a)(4) | X |
Limited Movement / Vibration (8) | ✓ | Heated Screeds (8) | ✓ |
BACKGROUND / BASES
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) | ✓ |
Anhydrite/Calcium 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)
BAL Prime APD PRODUCT INFORMATION
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)
SURFACE PREPARATION
Primer
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
MIXING
- Shake container well before use.
- Can be used undiluted/diluted 1:1 by volume of BAL PRIME APD and clean water and thoroughly mix.
APPLICATION/USAGE
Usage procedure
IMPORTANT NOTE: Do NOT use in temperatures below 5°C.1.
- Ensure surfaces are free from dirt, grease and other loose materials. Brush down highly polished surfaces with a stiff bristle brush before priming.
- 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.
- Ensure even coverage.
- Allow to dry thoroughly for 15-30 minutes before applying adhesive.
- Clean product from tools using clean water.
BAL Prime APD SHELF LIFE
12 months under normal dry conditions. Protect from frost and damp.
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