Sika® Primer PW-F
Two-component primer for a durable and consistent adhesion on concrete and metal
Sika® Primer PW-F is a two-component, solvent based epoxy primer for concrete and metal surfaces
- Easy application by brush or roller
- Helps to stabilise cementitious substrates
Usage
Bonding agent for Sikalastic®-901 and Sikalastic®-1000 GET roofing systems on cementitious and metal substrates.Advantages
- Easy application by brush or roller
- Helps to stabilise cementitious substrates
Packaging
Part A | 12 kg |
Part B | 12 kg |
Colour
Part A | Clear liquid |
Part B | Light yellowish liquid |
Product Details
Chemical base
Epoxy, solvent borne
Shelf life
12 months from date of production
Storage conditions
Store properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5 °C and +35 °C. Protect from frost and direct sunllight. Expiry date on container.
Density
~1.43 kg/l
Application
Mixing ratio
Part A : Part B = 50 : 50 (by weight)
Ambient Air Temperature
+5 °C min. / +40 °C max.
Relative Air Humidity
85 % max.
Dew Point
Beware of condensation!
The substrate and uncured coating must be at least 3 °C above dew point to reduce the risk of condensation or blooming on the wall finish.
Substrate Temperature
+5 °C min. / +40 °C max.
Substrate Moisture Content
< 6 % pbw moisture content Test method: Sika®-Tramex meter, < 4% CM - measurement or Oven-dry-method.
No rising moisture according to ASTM (Polyethylene sheet).
Visible free from moisture and condensation.
Waiting Time / Overcoating
Before applying Sikalastic®-901 and Sikalastic®-1000 GET on Sika® Primer PW-F allow:
Substrate temperature | Minimum | Maximum |
+10 °C | ~12 hours | 7 days |
+20 °C | ~6 hours | 7 days |
+30 °C | ~5 hours | 7 days |
Touch dry after:
Substrate temperature | Minimum |
+5 °C | ~3.5 hours |
+20 °C | ~1.0 hours |
+40 °C | ~20 minutes |
Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Consumption
Primer | Sika® Primer PW-F | 0.15–0.20 kg/m² |
Top coat | Various products of the Sikalastic®-901 and Sikalastic®-1000 GET roofing systems | Refer to the individual Product Data Sheet. |
SUBSTRATE QUALITY
The substrate must be sound, clean, dry and free of all contaminants such as dirt, oil, laitance, mould, grease, coatings and surface treatments, etc. If in doubt apply a test area first.
SUBSTRATE PREPARATION
All surfaces to be coated should be thoroughly cleaned by conventional means.
Allow a minimum of 28 days before overcoating new concrete. The concrete should have a Pull off strength ≥ 1.5 N/mm². Defects or damage to concrete decks must be made good using appropriate polymer modified repair mortar. Any repairs should be allowed a minimum of 72 hours to cure and until such time as the moisture content has fallen to the permissible level.
Steel is ideally prepared by shot blasting to Sa 2½ or SSPC 10 (nearly white metal). Where blasting is not permitted then clean metal preparation by power tools is acceptable.
Non-ferrous metals are prepared by removing deposits of dust and oxidation and abrade to white metal. Wire brushing can be used on soft metals, i.e. copper.
Ensure that surfaces are free from visible dampness and that all dust, loose and friable material is completely removed from all surfaces before application of the product, preferably by brush and/or vacuum.
APPLICATION
Prior to application, confirm substrate conditions, relative humidity and dew point.
Prepare Sika® Primer PW-F by stirring part A until uniform, add part B and mix by electric drill until a homogeneous colour is achieved and the product is free of streaks.
Sika® Primer PW-F can be applied by short-piled roller or brush. Application by brush or roller may require additional coats. Brush application is recommended only for small areas.