Damp Proofing Membrane (DPM)
This ready to use product is low odour, easily applied and is ideal for areas with constant water contact, such as wet room bathrooms, balconies and is also used for timber joists ends that are resting on damp walls or floors or embedded timbers. No Hydro Liquid Damp Proof Membrane can be used in conjunction with rising damp treatments, using No Hydro DPC Cream to treat the walls while using No Hydro Liquid Applied Damp Proof membrane to treat the concrete floors.
Damp Floor Protection
No Hydro Liquid Applied Damp Proof Membrane or Liquid DPM is a single-pack barrier coating that is supplied ready to use. It is available in black or white with a consistency similar to that of thick emulsion paint. The product is applied in two coats and is quick drying.
Flexible Damp Proof Membrane
Once applied, the product cures to form a membrane that is flexible and elastic. No Hydro Liquid Applied Damp Proof Membrane is water-based and can be applied to damp substrates by brush, roller, or spray. The applied product is typically touch-dry in one hour.
No Hydro Liquid Applied Damp Proof Membrane primary function is to treat damp floors it also treats damp concrete and provides a barrier to ground gases (including radon, carbon dioxide, and methane).
Application
No Hydro DPM can be applied using brush, roller or airless spray.
Single Coat Application: If a single dry coat thickness of more than 0.3 mm is required, it is recommended that No Hydro Liquid Applied Damp Proof Membrane (DPM) be applied using airless spray. A single coat thickness of up to 1 mm is possible using this application method.
Two 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 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 exacberated if the background conrete is wet. To minimise this risk and ensure a good bond to the substrate, the following should be undertaked.
- Vigorously brush the first coat into the background concrete using a stiff bristled brush.
OR
- Prime the roof with a slurry of SBR Latex, if using roller, or an airless spray application method. Allow the slurry to harden for 2 days before applying No Hydro Liquid Applied Damp Proof Membrane DPM.
Brilliant waterproofing option, brilliant coverage, great value.
I used this product recently on a job, it’s was very easy to work with, it had excellent adhesion to the concrete floor it was being applied to. The product definitely gets the job done with great value for money.