We use cookies to create the most secure and effective website possible for our customers, by using this website you agree to our use of cookies.
01387 270252reception@kosteruk.comKoster Aquatecnic Limited

Frequently Asked Questions

What size wetroom will an Aquaproof shower kit seal?

The Aquaproof compound will seal an area of 10sq.m. and the 15m roll of Aquaproof tape will seal 15 lin.m. of joints/junctions. All items of the kit are also available individually.

Where can I buy Aquaproof shower kits from?

The easiest way to buy AQUATECNIC Wetroom products is from our online store, we accept payment by credit or debit card and normally dispatch next day from our Birmingham warehouse. You can also order by phone or, trade/merchant customers are welcome to apply for a credit account or pay by cheque with your order.

If I order a shower tray former do I also need to purchase a separate shower outlet?

No, the shower tray formers come with their own trapped drain and tile sets.

If I order a shower tray former do I also need an Aquaproof shower kit?

Yes, the shower tray formers come with a first coat of Aquaproof compound, but you will still need to apply Aquaproof tanking to the whole floor and the walls in the immediate area of the shower.

Should I tank the whole shower room or just the area where the shower is situated?

It is recommended to tank the whole floor with a turn up of 100mm on to the walls and all the way up the walls in the shower area.

How much does it cost to deliver to Northern Ireland?

Unfortunately, our carriers charge a £20 supplement for all deliveries to Northern Ireland, and we have to pass this on. For this reason please contact us by phone to place orders for Northern Ireland or any other areas outside mainland UK.

Do you supply Aquaproof products in the Republic of Ireland?

No, but Aquaproof and Caroflow products are available from Contech Accessories. You can contact them from our links page.

How long will it take for my order to be delivered?

All orders received by close of business each day will be put through for dispatch the following day, on a next day delivery service. We aim to keep all items in stock but if for some reason we are out of stock, we will contact you to let you know the anticipated delivery date. Our shower tray formers are made to measure and take up to two weeks from receipt of payment, but you will be contacted with an anticipated delivery date.

Can any reasonably competent DIYer create a wetroom using Aquatecnic products or is an expert needed?

The Aquaproof tanking kit is very easy to use and requires no special skills, however, a wetroom must have a slope to falls under the waterproofing and this can be difficult to achieve, particularly on a wooden floor. One easier method of achieving the slope to falls is to order one of our shower tray formers. These birch ply shower bases have the slope to falls built in so you can fix directly to wooden floor joists or concrete floors.

Is Aquaproof system useful for waterproofing under tiles in a non-wetroom situation?

Yes, Aquaproof is frequently specified for use under conventional shower trays, in bathrooms, kitchens, and toilets. It is a particularly important system for apartments and hotels, where leaks from wet areas can cause serious damage to rooms below.

What surface can Aquaproof Compound be applied to?

Aquaproof Compound can be applied over plywood, screeded concrete, plaster, plasterboard, Wedi board, Marmox board, flush pointed brickwork and existing tiles (without primer).

What sort of tile adhesive should I use over Aquaproof system?

Aquaproof has been tested with many different tile adhesives and has worked with all of them. We recommend the use of any good quality "waterproof" and "flexible" tile adhesive grout.

How long does the Aquaproof have to dry before I can start tiling?

We recommend a minimum of 12 hours between applications of the last coat of Aquaproof Compound and the application of tiles. Aquaproof Compound takes up to two weeks to reach its ultimate strength.

Is Aquaproof Compound compatible with under floor heating systems?

Yes, Aquaproof compound can be used over the water type systems that are covered with a screed ( the Aquaproof sits on the screed) or the electric trace heating type systems set directly over the Aquaproof and are set in the tile adhesive. We are pleased to recommend the Thermoflex heating system which can be purchased from our online store.

Should I use Aquaproof tape over screw/nail heads?

Yes, we recommend that you cover every screw head with Aquaproof compound and a small patch of Aquaproof tape prior to the main Aquaproof coating.