Read our Reviews
Next Day Delivery Cutoff 12:00 noon

Wykamol 5L Black Technoseal Damp Proof Paint

Waterproof Liquid DPM Membrane
Code: 204099M
  • £32.99
  • (FREE UK Delivery)
Want it by Thursday 19th May? Order within 4 hours, 14 minutes and choose Next Day Delivery at checkout.
Item in Stock | Usually dispatched within 24 hours

Technoseal DPM Damp Proof Paint BLACK - 5 Litre Bucket


Technoseal Damp Proof Paint is a ready to use, SBR based, liquid damp-proofing membrane which provides a seamless barrier against water penetration, radon, gas methane and carbon dioxide.


Technoseal Damp Proof Paint is a viscous liquid of similar consistency to emulsion paint and dries to form a tough, semi gloss finish.



Product Benefits:

Non-Toxic, Non-Hazardous and Solvent-Free


Ideal in very wet areas - Floors and Walls in Wet Rooms and Kitchens


Easy application by Brush, Roller or High Pressure Spray


Can be applied to Damp Walls and Floors


Apply to Blockwork, Stone, Brick, Timber and Concrete


Can be Plastered and Boarded on top


For Internal use only unless Rendered / Protected on top



Typical Applications:

Floors: Under/ above screeds to provide a damp-proof membrane


Basements: As part of a waterproofing system below ground level


Walls: Can be used under render or plaster as a water barrier or vapour barrier


Ponds: Should be used as a finish over one of our Tanking Slurry Products in ponds which hold aquatic life etc.




The substrate should be smooth or have a light, even texture. Any masonry should be flush pointed and defects in existing surfaces made good.


Ensure surface is clean, sound and free of dust, loose materials or surface water, but damp substrates are acceptable. It is sometimes advantageous to pre-wet concrete or masonry substrates before application.


Test adhesion to substrate using a sample area before commencing application.




If necessary, the compound can be diluted with up to 10% water, however, care should be taken to ensure the correct dry coat thickness is achieved.



Application Method:

Technoseal can be applied using brush, roller or airless spray.


Single Coat Applications

If a single dry coat thickness of more than 0.3mm is required, it is recommended that Technoseal be applied using airless spray. A single coat thickness of up to 1mm is possible using this application method.


Two Coat Applications

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 scale for this will vary according to site conditions, but will typically be after 1 hour.


The second coat should be applied within 24 hours. After all coats have been applied, the membrane should be left foor at least 4 days before attempting any bond tests.


Roof Applications

Blistering can sometimes occur during this application process. This occurs when the heat from the sun causes a vapour pressure build up below the membrane.


The problem is exacerbated if the background concrete is wet. To minimise this risk and ensure a good bond to the substrate, the following should be undertaken.

Vigorously brush the first coat into the background concrete using a stiff bristled brush.


Prime the roof with a slurry of SBR Bonding Agent, if using roller, or an airless spray application method. Allow the slurry to harden for 2 days before applying Technoseal.


Wall / Floor Junctions

In some situations, e.g. at high stress points such as wall / floor junctions, it is beneficial to use polypropylene fabric (scrim) reinforcement. By choosing a suitable reinforcement it is possible to achieve good control of the coating thickness.

Choose a fabric with an approximate thickness of 0.5mm.


Roll the fabric into the base coat while wet.


Allow the first coat to dry to a tacky condition


Completely fill and cover the mesh with the second coat of Technoseal and a minimum thickness of 0.6mm will automatically be achieved.




Technoseal should not be applied when the temperature of the substrate, or the air temperature is below 7°C and falling.


The dried film, like most organic coatings, is combustible and hence will not be suitable in all situations e.g. it should not be used to coat flammable materials (expanded polystyrene).


A minimum dried coat thickness of 0.6 mm is needed to provide a vapour barrier.


This should be applied in a minimum of two coats.


The incorporation of polypropylene fabric increases the tensile strength but decreases the extensibility.




Up to 5m² based on a two coat application




Supplied in 5 Litre Buckets





Be the first to review 5L Black Technoseal Damp Proof Paint. Write a review

Here at Build and Plumb Materials Online, we want you to be 100% happy with your purchase. Alongside this we want to offer outstanding customer service.

We offer free delivery on the majority of our product lines.  Unfortunately, this is not always possible due to various reasons, but we will always endeavour to keep these costs as low as possible.

Next day delivery is available; however, orders for next day delivery must be placed by 12 noon.  Any orders placed for next day delivery after this time, will take 2 working days to be delivered.

Working/delivery days are Monday to Friday, deliveries will not normally be made Saturday or Sunday.

We offer a 30-day returns policy on all of our items, as long as the item is unused, undamaged and in its original packaging, rest assured we will accept your return and give a full refund if the above conditions are met. We only ask that the postage is covered by yourself.

On the rare occasion, if your item is damaged on arrival please let us know within 2 days of receipt of the item so we can organise a new item to be delivered and ask that the damaged item be returned.

On the event of a defect being found upon install or use please contact us immediately to allow us to resolve the issue in accordance to manufacturer / supplier terms and conditions.

For any issues surrounding the return of an item please let us know either by phone on 01228 635022 or by emailing

Please contact us for our Payment & Security policy.