Special wash primer PCI Gisogrund® 404 1L

Primer for absorbent substrates

See parts included Technical specification

PCI Gisogrund 404 1L is a single component, solvent free, fastdrying primer. With PCI Lastogum makes perfect combination to make your shower area waterproof. The primer can be used with most types of floor, highly recommended for wooden and wood-base materials surfaces, plaster boards, paint coating, finish material and cementous floor leveler. Is it reliable bond of coverings and screeds to the substrate.

PCI Gisogrund 404 can be diluted with water and adapted to the absorbency of the substrate. Also, characterized with reliable adhesion with tile adhesives. After application of primer, surface is walkable after approx. 3 hours.

PCI Gisogrund 404 1L bag will cover approx. 5 to 10m², depending on what surface it is used.

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Amount of products available off-the-shelf. If order is placed before 3pm, it will be shipped same day with free next business day delivery.

Quantity available in stock for next day delivery:

  • Special wash primer PCI Gisogrund® 404 1L x 7
Total available in stock: 7
Same day shipping and delivery on Monday if you order in next 0 hours 00 minutes and 00 seconds
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For absorbent and non-absorbent substrates.

Features and benefits:

  • Solvent free to TRGS 610, Giscode D 1.
  • Very low emission PLUS, GEV-EMICODE EC 1 PLUS.
  • EU 2004/42/IIA(g)(50/30): < 7 g/l.
  • Can be diluted with water and adapted to the absorbency of the substrate.
  • High bond strength, reliable bond of coverings and screeds to the substrate.
  • Colour violet for good coverage control.

Fields of application:

  • For indoor and outdoor use.
  • For absorbent and low-absorbent concrete and screed substrates.
  • As special primer for PCI Zemtec 1K, PCI Zemtec 180, PCI Periplan, PCI Periplan Extra, PCI Periplan Plus, PCI Periplan Fein, PCI Periplan Multi and PCI Periplan White.
  • As special primer for anhydrite screeds, mastic asphalt screeds, magnesite screeds for floor levellers and tile adhesives.
  • As special primer for wooden floorboards, particle boards as well as OSB boards.
  • As special primer for non-absorbent substrates such as ceramic tiles for subsequent floor levelling compounds.
  • Suitable for the use on ships; meets the requirements of Marine Equipment Directive (MED) 96/98/EC.

gisogrund-painting-brick-wall-300px.jpgPCI Gisogrund improves the adhesion of plaster and lime gypsum plaster to brickwork.

PCI Gisogrund protects levelling compound and thin-bed mortar from too rapid dehydration, extends the open time, helps improve adhesion and prevents the formation of cracks caused by shrinkage.

PCI Gisogrund helps improve the strength and solidity of old, mealy plaster and increases adhesion to tiles, plaster and wallpaper.

Material base
modified polymer dispersion
Single component
approx. 1.03 g/cm³
Packaging size
1 l bag stock no. 1768/5
Shelf life
min. approx. 12 months
approx. 100 to 200 ml/m² • The consumption is dependent on absorbency and structure of the substrate.
Working temperature
+5 °C to +25°C
dry and protected from frost; no permanent storage over +30°C
Walkable after
approx. 3 hours
1 l bag covers
approx. 5 - 10 m²
5 l pail covers
approx. 25 - 50 m²
20 l pail covers
approx. 100 - 200 m²
Minimum layer thickness
closed film
Maximum layer thickness
200 μm wet film
Mixing ratio with cement screed, magnesite screed
diluted 1 : 3 with water, 2 layers
Mixing ratio with concrete substrates
diluted 1 : 2 with water, 2 layers
Mixing ratio with anhydrite screeds, mastic asphalt screeds
diluted 1 : 1 with water, 1 layer
Mixing ratio with wooden substrates
diluted 1 : 1 with water, 1 layer
Mixing ratio with non-absorbent substrates (e.g. ceramic tiles)
undiluted, 1 layer
Ready for application of floor leveller after
approx. 3 hours (approx. 12 hours on anhydrite)

Preparation of substrate

The substrate must be structurally sound, clean, dry, free of oil and residues which could impair adhesion. The substrate condition must meet the requirements of any further coverings.

Application procedure

  1. Shake PCI Gisogrund 404 well before use.
  2. Pour primer onto the clean and prepared substrate and spread in crisscross method using a fine-pored foam roller, surface scraper, soft brush or flat bristle brush. Avoid puddles forming! A second coat of primer can be applied when the first coat is walkable. Use particle filter mask P2 for spray application. Cement screeds and magnesite screeds Prime with PCI Gisogrund 404, diluted 1 : 3 with water, apply two layers. Concrete substrates Prime with PCI Gisogrund 404, diluted 1 : 2 with water, apply two layers. Anhydrite screeds, mastic asphalt screeds, wooden substrates Prime with PCI Gisogrund 404, diluted 1 : 1 with water, apply one layer. Untreated (raw) wooden floorboards and particle boards require a second coat of primer as soon as walkable. Prime old ceramic and natural stone tiles with undiluted PCI Gisogrund 404, one layer.
  3. Floor levellers and coverings can be subsequently applied to the cured and walkable primer. The waiting time of 12 hours must be observed for anhydrite substrates.

Please note:

  • Do not use PCI Gisogrund 404 at substrate temperatures below +5 °C and above +25°C.
  • The mixing ratio must be adapted to the absorbency of the substrate and strictly followed.
  • Apply a generous amount of primer and brush in well. Avoid puddles forming, spread out excess primer.
  • The surface finish must be removed by rough-grinding and thorough cleaning prior to applying PCI Gisogrund 404 to water-repellent ceramic (e.g. Ceramic plus by Villeroy & Boch).
  • When using PCI Gisogrund 404 outdoors, it is required to protect the primer with a subsequent waterproofing layer (e.g. PCI Seccoral) before laying ceramic or natural stones.
  • Clean tools and mixing buckets with water immediately after use. When the product has cured it can no longer be removed with water.
  • Storage: min. 12 months; dry and protected from frost, no permanent storage over +30°C.
No reviews
Hi, can you please tell me if I order today when can it be delivered to Kent Paul

Dear Paul,

This product is available off-the-shelf, so if you order it before 3 o'clock it will be shipped same day with next day delivery.

I am happy to help if you have any other questions.

Kind regards


020 7193 0953

Are you able to ship to Australia? What would the cost be? Thanks


How many of them would you like to buy? Would this ba an order for a single product or do you want to order more of them, a pallet for example?

I think shipping is possible, what's the price and time acceptable for you that's the question.

Kind regards

David 020 7193 0953

hi do you do delivery to Perth Western Australia 6110 and if so how much. Thanks


How many of them would you like to buy? When do you need this shower tray? This is a new product in our store and we do not have it in stock yet, so the delivery of this product takes longer because it is produced only after placing the order. Production and delivery can take up to 25 days.

Please, let us know how many of them you require and we will prepare a delivery quote.

Kind regards

Agnes D.
Customer service

What are your office opening hours ?Are you open on an Saturday please ?


We are not working during weekends, sometimes we do reply to emails and phone calls.

You can visit our Rotherham warehouse from Monday to Friday, 9am - 6 pm.

Let me know if you have any questions about our products or service.

Kind regards

Adam 017 0927 3601

Do you sell the tanking liquid separately?


Yes, tanking liquid is available separately, however it's less cost efficient. Waterproofing kit is available at comparable price and contains materials that you will probably need to use anyway.

There's special category in our store: Tanking liquid.

I am happy to assist if you have any further questions.

Kin regards

David 020 7193 0953

If I order the item now. When will it come?

Hi Andrea,

It's too late for us to ship it today, but if you ordered it now we would ship it tomorrow with next day delivery.

Orders placed before 3 o'clock are shipped same day. After 3 o'clock on the next business day.

Kind regards

David 020 7193 0953

how long after manufacture can i use it. I've got 2 bags that i purchased from you last august 1 batch number 21/18. and 1 29/18. thanks

Dear Daniel,

Shelf life of the Nanofug Premium is 12 months, therefore as long as it's not been opened it can still be used within several months.

If the bags have been opened they are probably no longer usable and you will need to supply a new product.

I will be happy to assist if you have any questions.

Kind regards

David 020 7193 0953

We have the wiper tanking kit and have the instructions for the liquid and primer but nothing that says how the sealing tape/membrane is applied to this layer ? Ie: do we need to let it tac or does it go straight onto the tanking liquid ?Any advise ...

Dear Tracey,

Sealing membrane should be applied after applying first layer of tanking liquid. It works as a great adhesive to stick sealing membrane. If the first layer is already dry, you can use tile adhesive which also works well.

Everything should be covered with another tanking liquid layer afterwards.

Kind regards

David M 020 7193 0953

How do I determine the size of waterproofing kit I might need?

Dear Sean,

Joints between the tray and rest of the floor and the walls is the most important part that needs to be sealed off 3 m2˛ of waterproofing kit is enough for that, should also last to cover the tray itself with it as well with 2 coats.

If you wanted to waterproof more space, maybe even entire floor, then you should go for 6 m2˛.

I will be happy to help if you have any questions.

Kind regards

David 020 7193 0953

If I ordered 5L of PCI Gisogrund before 12.00 midday today what is the best delivery time you can provid to NP20 5AH

Dear Ken,

You can place the order before 3 o'clock to have it shipped same day.

The best what we could do is tomorrow before 9 am, but there would be additional £20 delivery fee.

We could also send it for £10 with before noon delivery.

Lastly for free for just tomorrow delivery.

Same applies for packaging of 10l. Please call me to arrange the order.

I will be happy to assist if you have any questions.

Kind regards

David 020 7193 0953

Do we use primer and tanking liquid over the shower liner or just over the joints.


The tray doesn't need to be primed. In addition to that, primer is sometimes completely optional. Primer should be used to strengthen the walls and increase it's absorption.

You should apply the primer on the floor and walls, prior to fitting the tray. It should be left until it's dry.

Then you fix the tray to the floor with adhesive, waterproof it and all the surrounding, then proceed to tiling.

In case of any questions I will be happy to help.

Kind regards

David 020 7193 0953

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