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Mapei Shower Waterproofing Kit (78484)

Easy to apply kit for treating commercial or domestic showers before tiling. Provides tough and durable protection against leaks whilst remaining permanently flexible. Contains primer, coating and waterproof jointing tape. Contains enough to waterproof a standard sized shower. Covers up to 4m².

  • Suitable for Shower Trays or Over a Bath
  • Covers up to 4m²
  • Waterproofs Plaster, Plasterboard, Plywood, Render & Concrete
  • Fast-Drying
  • Apply with Brush or Roller

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£61.99INC VAT

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Rated 4.6 out of 5 by 28 reviewers.
  • 2016-04-30 T06:37:30.861-05:00
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Rated 5 out of 5 by Overbath tanking Used this to tank the walls over my bath before fitting an electric shower. Really easy to follow instructions and will hopefully last for years and years. Great product. 1 Mar 2016
Rated 5 out of 5 by En suite shower Used this to waterproof my en suite shower. Easy to apply, just watch the video of I t on you tube. Essential and worth every penny if It prevents any leaks in the shower. 16 Feb 2016
Rated 5 out of 5 by Shower waterproofing Used this to waterproof a shower. It was cheaper using this kit to normal plasterboard than using hardiebacker boards. Well enough in the kit. Would have liked a bit more tape as i needed to do three walls in a walk in shower. Got around half a tub of the paint on stuff after two good coats. Time will tell how good it is but looks like it will work perfect. 8 Feb 2016
Rated 5 out of 5 by easy to use really easy to use, just read the instructions. rather smelly, but very good end results. 4 Dec 2015
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5 Questions  5 Answers

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12 Apr 2016
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Prestwick
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Answer: 
For bonding ceramic tiles no larger than 300x300mm we would recommend using Mapei Buildfix Wall Tile Adhesive Off White 15kg (Product code 5832C). However due to the non porous nature of the waterproofed background the drying time of the adhesive may be extended.
13 Apr 2016
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2 Dec 2015
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Greenock
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Answer: 
While it is not necessary to fill in the joints in the boards prior to the application of the Mapei sealing tape as this provides a waterproof covering in its self, it would not be detrimental to your installation.
8 Dec 2015
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2 Dec 2015
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Greenock
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The answer is no. I contacted the mapei technical team and they could not guarantee performance of the waterproofing after the expiry of the manufacture date. The date on the cardboard packaging is the expiry date of the product, the date on the primer and the waterproofing inside the container is the manufacture date. It is advisable to check dates before opening the individual items.
5 Dec 2015
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Greenock
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1 Answer

Tiles not sticking

Has anyone else had the problem?

I have rendered walls which fully dried out around 2 weeks, I applied the Primer and left to fully dry and then 2 coats of the final application as the instructions. This was allowed to dry for 2 days.

My tiler put the tiles over this and the adhesive is not setting the tiles are still loose after 3 days. All wall areas have stuck and set which are just rendered only the areas with the tanking kit applied will not take.

Thank you for any feed back or information
29 Oct 2015
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Anonymous,
Maldon essex
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Answer: 
When applying tiles over Mapei Shower Waterproofing Kit, if a paste adhesive is used the drying times of the adhesive over this impervious coating maybe greatly extended, this is because the adhesive can only dry out solely through the grout joints.

As the rendered background is porous certain amounts of the moisture in the adhesive will be drawn into the background aiding the drying of the ready mixed adhesive.

To aid in speed of application the use of an adhesive such as Mapei Rapid-Set Adhesive Grey 20.0kg (Product Code: 29634) would be advisable, as this type of powdered adhesive cures through chemical reaction rather than drying through the grout joint.
30 Oct 2015
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I am at the stage of installing my wet room and have got to the point where I have laid the backer board and need to level the floor out so that the tiles run into the drain. However, I am unsure if I should use the self levelling compound before using the mapei tanking system, or should I tank the room first and then use the self levelling compound?
1 Aug 2015
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portsmouth
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Answer: 
For this application the falls would need to be built in to the floor prior to the application of the waterproofing. It would not be advisable to cover floors set to falls with leveling compounds as they will always want to follow the fall to the drain.
22 Oct 2015
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Specification
Brand Mapei
Colour Light Grey
Coverage Per Pack 4 m²
Manufacturer Guarantee 5 years
Pack Size 1
Pieces in Pack/Case 1
Product Type Shower Waterproofing Kit
Suitable Application Suitable for Shower Trays or Over a Bath
Total Product Weight 5.95 kg

Product contents

5kg waterproofing liquid, 500g primer and waterproof tape (W x L: 120mm x 10m).

Downloads

Safety Data Sheet (COSHH)