Using Pro Gyp-Base on an Anhydrite Screed with Permalayer Matting
Using Norcros Adhesive’s fast track solution for tiling to anhydrite screeds you can tile to 7 day old screeds (up to 95% RH). The kit contains everything you need to prepare 25m². It’s been tested and approved by Gypsol.
- Pump the Anhydrite screed
- Remove all air bubbles and allow to dry until the screed has achieved a Relative Humidity of not greater than 95%. This will be around 7 days after the screed has been laid
- Remove all traces of laitance and dust by lightly sanding the surface
- Mix parts IA and IB together and mix until it is smooth and lump free
- Apply to the screed using a roller or brush. Allow to dry for 2 hours
- Mix parts 2A and 2B together and mix until it is smooth and lump free
- Apply to the screed using a roller or a brush, at a 90° angle to the first coat
- Allow to dry for 24 hours
- Pour the moisture suppressant into a suitable tray. Apply first coat using a roller or brush and then allow to dry for 1 hour
- Apply second coat of moisture suppressant using a roller or brush, at a 90° angle to the first coat. Allow to dry for 1 hour
- Apply one coat of the gritted primer. Allow to dry for 1 hour
- Prepare and mix Norcros Pro-Gyp Base tile adhesive, and apply to screed. If required, apply Pro-Gyp Base Levelling Compound before tiling commences
- Lay Norcros Permalayer into the adhesive bed ensuring that the adhesive penetrates through the Permalayer
- Prepare and mix tile adhesive and apply to Permalayer. Lay tiles and grout once adhesive is dry