User Type: Flooring Installer

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.

  1. Pump the Anhydrite screed
  2. 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
  3. Remove all traces of laitance and dust by lightly sanding the surface
  4. Mix parts IA and IB together and mix until it is smooth and lump free
  5. Apply to the screed using a roller or brush. Allow to dry for 2 hours
  6. Mix parts 2A and 2B together and mix until it is smooth and lump free
  7. Apply to the screed using a roller or a brush, at a 90° angle to the first coat
  8. Allow to dry for 24 hours
  9. Pour the moisture suppressant into a suitable tray. Apply first coat using a roller or brush and then allow to dry for 1 hour
  10. 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
  11. Apply one coat of the gritted primer. Allow to dry for 1 hour
  12. Prepare and mix Norcros Pro-Gyp Base tile adhesive, and apply to screed. If required, apply Pro-Gyp Base Levelling Compound before tiling commences
  13. Lay Norcros Permalayer into the adhesive bed ensuring that the adhesive penetrates through the Permalayer
  14. Prepare and mix tile adhesive and apply to Permalayer. Lay tiles and grout once adhesive is dry

Using Pro Gyp-Base on an Anhydrite Screed

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.

  1. Pump the Anhydrite screed
  2. 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
  3. Remove all traces of laitance and dust by lightly sanding the surface
  4. Mix parts IA and IB together and mix until it is smooth and lump free
  5. Apply to the screed using a roller or brush. Allow to dry for 2 hours
  6. Mix parts 2A and 2B together and mix until it is smooth and lump free
  7. Apply to the screed using a roller or a brush, at a 90° angle to the first coat
  8. Allow to dry for 24 hours
  9. Pour the moisture suppressant into a suitable tray. Apply first coat using a roller or brush and then allow to dry for 1 hour
  10. 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
  11. Apply one coat of the gritted primer. Allow to dry for 1 hour
  12. Prepare and mix Norcros Pro-Gyp Base tile adhesive, and apply to screed. If required, apply Pro-Gyp Base Levelling Compound before tiling commences
  13. Lay tiles, then grout once adhesive is dry

Prime Bond For Flooring

Norcros Prime Bond is water and weather resistant and therefore suitable for both internal and external use on a wide range of substrates as a primer, sealer, dust-proofer, slurry bonding coat and admixture in screeds and concretes.

2 Part Levelling Compound For Flooring

Norcros 2 Part Levelling Compound is suitable for levelling a variety of substrates including concrete, cement: sand screed, flooring grade asphalt and existing quarry tiles. The excellent levelling and flow properties of the product make it ideal for preparing sub floors prior to installing resilient flooring products.

Fisherman’s Church

Channel 4’s programme; The Restoration Man, saw Jackie Robinson and Neil Worrell renovate the old abandoned St Peter’s church, located in the heart of the stunning fishing village of Brixham, into their first home together.

The church, which was built in 1874, had stood abandoned for 5 years so when Neil and Jackie found it, it was derelict, damp and dilapidated. Due to its poor condition, it also needed completely stripping out internally and full restoration throughout.

Three different types of ceramic tiles were used throughout the building, including four different styles and patterns of modern wall tiles for each of the four unique bathrooms. Victorian patterned clay floor tiles in decorative designs for the master bedroom, bathroom and kitchen area and off-white extra large Italian 1.2 metre square tiles throughout the ‘modernist’ basement area.

Norcros provided technical assistance in scheduling their requirements for tiling, substrate materials, grouts, silicone and waterproofing compounds. This was a highly complex specification as the tiling was done to a variety of substrates including plasterboard, chipboard, plywood, blockwork, concrete slabs and existing masonry walls. ‘’Norcros were very helpful technically and the products were subsequently delivered to the site quickly and efficiently’’ said Jackie.

With over 10 tonnes of ceramic tiles used within the finished project, Neil and Jackie are delighted with how they turned out on the finished build.

The products used included;

Laying Norcros Permalayer onto a Green Screed

  1. First, your existing screed should be sealed with a coat of Norcros Prime Bond, diluted 1-to-4 with water
  2. Roll out the Permalayer and cut to the size required
  3. Next, pour cold water into a mixing bucket and gradually add the adhesive powder. Only mix the amount of adhesive you would be able to use within half an hour, else it will begin to skin over
  4. Use an electric mixer to achieve the right consistency
  5. Now, spread out the adhesive using a suitably notched trowel
  6. Firmly press the matting into the adhesive with the smooth side of thr trowel. The adhesive should penetrate through the surface of the mat. Leave it to dry
  7. Once dry, you’re ready to start drying
  8. Mix another batch of adhesive as before
  9. Spread the adhesive using a suitable trowel, such as a thick bed trowel
  10. Firmly press the tiles into the adhesive ribs with a slight twisting action to ensure the adhesive ribs collapse to form a solid bed of adhesive beneath the tiles
  11. Once you’re finished, your tiles can be grouted 3 hours after you have finished laying