Platinum Chemicals supply a range of liquid-applied damp proof paint products including DampSeal DPM, Cromaprufe and EP40 Epoxy Floor Coating.
These damp proof paint products are specifically used to resist water penetration in walls and floors.
DampSeal DPM is a Highly Advanced SBR Latex-based liquid-applied membrane. DampSeal DPM offers a simple method for many water proofing and vapour proofing applications.
Cromaprufe is a cold-applied rubberised black Bitumen DPM that dries to provide a tough, flexible waterproof coating. Suitable for use on walls and floors to prevent water ingress and dampness from the ground.
EP40 Epoxy Floor Coating is a water-based damp proof paint, two-pack Epoxy Resin Floor Coating System with excellent adhesion to many surfaces providing a hard wearing, dust-free finish.
If you need advice on which damp proof paint product is right for your needs don't hesitate to get in touch.
Platinum Building Chemicals Ltd | Damp Proofing
DampSeal DPM Paint is a highly advanced Styrene Butadiene Latex-based liquid-applied damp proof membrane.
DampSeal DPM Paint offers a simple method for many water proofing and vapour proofing applications.
The product supplied is a viscous liquid of similar consistency to thick emulsion paint.
Available in 5 Litre or 10 Litre Containers in either White or Black colours.
The colours will differ slightly on application from the colour of the dried membrane / paint. The damp proof membrane dries to a tough semi-gloss finish.
DampSeal DPM painthas been independently tested and found to be an effective guard against CO² and Radon Gas. The advantages include:
Single pack system
Water based compounds that can be applied even to damp backgrounds
Non-toxic, non-hazardous, solvent and plasticiser free
Good bond to many substrates
Low water vapour permeability
Quick drying. Typically dry in 1 hour
Toughness, high flexibility, extensibility and good crack bridging properties
Alkali resistant. Can be applied to alkaline surfaces
Resistant to silage acids
Take the usual labour hygiene into account.
PPE should be worn during application. See our Safety & PPE Products.
Consult label and material safety data sheet for more information.
The background surface should be smooth or have a light even texture. Any masonry should be flush pointed and defects in existing surfaces made good.
The surface needs to be clean, sound and free from dust, loose material or free surface water. DampSeal DPM paint should not be applied in wet conditions or where these conditions are likely to occur before the membrane has dried.
DampSeal DPM paint should not be applied when the temperature of the background, or the air temperature, is below 7°c.
It sometimes advantageous to pre-wet concrete or masonry backgrounds, so that these are damp but free from any water glistening on the surface.
Because of the wide variety of background types and site conditions it is always advisable to check adhesion to the background by testing on a sample area before starting any job.
DampSeal DPM can be applied by brush or roller and is effective in the following situations.
FLOORS: Under screeds (or above screeds) to provide a damp proof membrane.
BASEMENTS: As part of a waterproofing system beneath ground level. NOT suitable where hydrostatic water pressure is present.
WALLS: Can be used under render or plaster as a water barrier or vapour barrier.
TILING: As a secondary protection under tiles in wet areas e.g. bathrooms, food processing areas, balconies, etc.
SILAGE STORAGE: The membrane protects concrete from silage attack.
GAS BARRIER: To minimise CO² / Radon transmission.
DampSeal DPM paint may be applied by brush, roller or airless spray. If necessary the compound can be diluted with up to 10% water, however care should be taken to ensure that the correct dry coat thickness is applied.
The thickness of the dried DPM per coat depends on the method of application.
For a single dry coat thickness of more than 0.30mm it is recommended that DampSeal DPM is applied by airless spray. If airless spray is used single dry coat thickness’s of up to 1.0mm can be obtained.
Note: A single coat of 0.60mm dry thickness or more will require a greater drying time than for an equivalent multi-coat application.
If two coats are being applied it is recommended that the coats be applied at right angles to each other.
Before applying the second coat it is necessary to let the first coat become touch dry. The time required to reach this tough dry condition will vary according to site conditions but will typically be in the order of 1 hour. It is preferable if the second coat is applied within 24 hours of applying the first coat.
After all coats have been applied DampSeal DPM paint should be left for at least 4 days before attempting any ponding tests. Under unfavourable drying conditions this period may need to be extended.
Whilst most applications to concrete roofs have been successful, blistering shortly after application of DampSeal DPM paint to the roof has occasionally occurred.
This blistering is caused by the heat from the sun causing a vapour pressure build up below the membrane.
The problem is exacerbated if the background concrete is wet.
The risk of blistering can be minimised by ensuring a very good bond to the background and avoiding application of DampSeal DPM in, or shortly prior to, strong sunlight.
Techniques for maximising bonding are:
Vigorously brushing the first coat into the background concrete using a stiff bristled broom.
Priming the roof with a slurry of SBR Bonding Agent and Ordinary Portland Cement. Allow this primer coat to harden for at least 2 days before applying DampSeal DPM.
In some situations e.g. at high stress points such as wall / floor junctions and construction joints it is advised to use Platinum Mesh Tape to provide strength and to reduce cracking.
The fabric is rolled onto the first wet coat and then coated with additional DampSeal DPM after allowing the first coat to dry to a tacky condition.
A minimum dried coating thickness of 0.6mm is necessary to provide a vapour barrier.
This should be applied in a minimum of two coats. (i.e. 0.3mm dry film thickness per coat for two application).
For the final dried membrane thickness to be 0.60mm a coverage rate of 1.20kg/m² is required (this is the total for all coats). This corresponds to approximately 1 Kg/m². A 5kg Bucket will cover Approximately 5m² based on 2 Coats
Wykamol Group | Damp Proofing
EP40 Epoxy Floor Coating is a water based, two-pack, easy to apply epoxy resin system with excellent adhesion to concrete, wood and other surfaces providing attractive, hard wearing dust-free finishes.
EP40 Epoxy Floor Coating can be used as a liquid DPM Paint (Damp Proof Membrane Paint) at ground floor level.
Floors become easier to clean with an impervious finish and are substantially more resistant to damage by fork-lift trucks, chemicals, fuels and lubricants etc. EP40 Epoxy Floor Coating can be applied to new (green) concrete, 7 days after being poured.
EP40 Epoxy Floor Coating has excellent resistance to fuels, oils and lubricants. All grades possess good resistance to dilute acids, alkalis, detergents, salt and sugar solutions.
Chemical spillages should always be wiped up as quickly as possible and not allowed to evaporate.
Available in 5Kg (Two-Part) Packs in Grey or Clear Colours.
EP40 Epoxy Floor Coating GREY: A general purpose epoxy resin finish suitable for use in most industrial environments, which dries from a semigloss to a semi-matt finish depending on temperature and humidity.
EP40 Epoxy Floor Coating CLEAR: A clear coating for sealing concrete or for use where a primer is required prior to application of EP40 Epoxy Floor Coating Grey. A primer is required for porous surfaces, high build and anti-slip finishes.
EP40 Epoxy Floor Coating, being low-odour, is ideal for use in domestic properties, kitchens and basements as well as the food industry, dairies, breweries, bakeries etc. where solvent based products are prohibited.
The hardwearing properties and resistance to chemical and oil spillages make EP40 Epoxy Floor Coating ideal for industrial units, warehouses, automotive workshops and general industrial usage.
EP40 Epoxy Floor Coating can be used as a liquid DPM (Damp Proof Membrane) at ground floor level.
NOTE 1: In order to achieve the best results from this product, it is recommended that the product be used only when temperatures in excess of 10°C are present with good ventilation.
NOTE 2: Variations in temperature and humidity during the cure period can significantly affect the rate of drying and surface finish.
EP40 Epoxy Floor Coating has excellent resistance to fuels,oils and lubricants. All grades possess good resistance to dilute acids, alkalis, detergents, salt and sugar solutions.
Chemical spillages should always be wiped up as quickly as possible and not allowed to evaporate. For further information,please consult our Technical Department.
All surfaces to be coated with any grade of EP40 Epoxy Floor Coating should be dry, clean and free from laitance, oil, grease or other contaminants.
Ideally concrete surfaces should be vacuum shot blasted or mechanically abraded to both clean and open the surface to provide a good mechanical key.
The separate base and hardener components must be thoroughly mixed together before application.
One or two coats of EP40 Epoxy Floor Coating can be applied with a roller or brush.
Slip resistance can be achieved by specifying a three coat system. The first coat of EP40 Epoxy Floor Coating CLEAR being followed by one coat of EP40 Epoxy Floor Coating GREY, lightly scattered with anti-slip aggregates whilst still wet, at a rate of 50/100g per m².
Approx 6-8 m² per kg per coat (2 coats recommended).
EP40 Epoxy Floor Coating can be cleaned with water, or with good quality detergent or just brushed out. EP40 Epoxy Floor Coating coated floors should not be subject to hot water above 60°C or steam cleaning.
Cromar Building Products | Damp Proofing
Cromaprufe is a cold applied rubberised bitumen emulsion that dries to provide a tough, black flexible coating.
Cromaprufe will provide a waterproof membrane on concrete and brick foundations, retaining walls and bridge abutments. It also protects concrete structures against attack by sulphates present in soils.
Cromaprufe can be used as a waterproofer for floors and walls. It is also highly effective as an adhesive for bonding wood block and wood mosaics, expanded polystyrene and cork tiles, and provides a key for plaster on difficult surfaces.
Available in 5 Litre and 22.5 Litre Containers.
All surfaces should be sound, stable and free from dust, dirt, grease, oil and all loose matter.
Cromaprufe may be applied to damp but not waterlogged surfaces. Porous and hot dry surfaces should be dampened with clean cold water to assist the application of the product.
Stir well before use.
Apply by brush. Do not apply to external surfaces in wet weather or if rain is threatened. Allow good
ventilation in confined areas. In multi-coat applications, each coat should be allowed to dry completely before the next coat is applied.
Waterproofing and Protection of Structures, Foundations, Retaining Walls & Bridge Abutments:
Apply 2 coats, each at 2m² per litre. When treating foundations, the coating should be taken to meet the damp-proof course provided in the base or wall.
Cromaprufe may be applied to green concrete surfaces immediately after the shuttering has been removed to act as a curing membrane.
It is recommended that 48 hours be allowed to elapse before back-filling.
Cromaprufe may be used to provide a damp-proof membrane on concrete beams and columns before they are clad with rendering, masonry or brickwork. Two coats of Cromaprufe should be applied, each at 2m² per litre.
When the second coat has become tacky it should be blinded with 1 to 2 mm stone chippings or clean sharp sand.
If rising dampness is at all suspected, the best method of prevention is the insertion of a damp proof course or the repair of the existing one.
Remove all dirt, dust and grease. If the surface is uneven it should be levelled using cement mortar.
Bare brickwork should be covered with a thin skin of cement mortar, which should be allowed to dry.
Apply three coats of Cromaprufe each of 2m² per litre. The final coat should be blinded with clean sharp sand while it is still tacky.
Remove the wallpaper, loose distemper paints, dirt, dust and grease and make good any damaged or perished plaster. Lightly dampen the prepared surface and apply two coats of Cromaprufe each at 2m² per litre.
A section of the wall (about 300mm) should be left untreated so that any trapped moisture may evaporate away. When decorating over Cromaprufe do not use gloss paints or other oil based products.
Emulsion paints and wallpapers may be used after first hanging a lining paper, fixed with cellulose paste. Do not use wallpapers based on vinyl.
Not advised for interior walls below ground level. It is recommended to treat on the outside as Cromaprufe is unlikely to resist exposure to free water or water pressure, conditions which are often found in basements and cellars.
Sandwich construction - severe conditions and penetrating damp: Apply two coats of Cromaprufe onto the smooth, clean concrete subfloor, each at 1m² per litre.
Whilst the second coat is still tacky, blind with clean sand, as a protection against foot traffic and to provide a good key for the top screed.
It is important that the Cromaprufe membrane is taken up walls to marry with the DPC and that the dried film is not punctured or damaged.
Apply the top finishing screed to a thickness of at least 50mm and allow to dry out thoroughly before laying a floor covering.
Where severe dampness is unlikely to occur, a surface treatment with Cromaprufe will prove an efficient precautionary measure (however, the sandwich construction as described above should always be undertaken if conditions are severe and damp to penetrating).
Apply of priming coat at 7.5m² per litre by diluting 1 part Cromaprufe with 6 parts clean cold water and allow to dry thoroughly.
Two coats of Cromaprufe each at 1 m² per litre should then be applied. Each coat should be taken up to joint with the existing DPC and the dried film of Cromaprufe should not be punctured or damaged before the floor covering is laid.
Note: Rubber tiles, pure vinyl tiles, vinyl sheets, rubber foam backed carpet or any floor covering containing appreciable amounts of solvent or plasticizer should not be fixed with, or applied over Cromaprufe.
If damp conditions are expected, first treat the floor as described above in 'floors' section. Ensure that the surface is level and clean. Lightly prime but do not over wet the surface with clean cold water.
Pour some Cromaprufe into a shallow tin and dip each wood block separately into the adhesive, coating only the underneath and half-way up the sides. Press the blocks home firmly, taking care to exclude air.
When fixing wood mosaics panels, spread Cromaprufe onto the screed at 0.8m² per litre and immediately place the panels into position.
Note: On non-porous floors, allow the film of Cromaprufe to become tacky, (30 to 45 minutes before laying the panels). Where underfloor heating has been installed, this should be turned off and the floor allowed to cool prior to laying blocks or mosaics. Allow 48 hours before turning back on again.
Cromaprufe may be applied to surfaces which have poor keying properties e.g gloss painted walls, old tiles, to permit the application of plaster.
The surface, which should be free from grease and dirt, should be coated with two thin layers of Cromaprufe (4.5m² per litre each).
Whilst the second coat is still tacky it should be blinded with clean sharp sand and allowed to dry for 48 hours before plastering according to Plaster Manufacturers recommendations.
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