F.A.Q

Q. How long before I can walk on the floor?
A. Depending on the site conditions, the floor can be lightly trafficked after 24-48 hours.

Q. What is Laitance Removal?
A. Laitance Removal is the removal of the weak crust that forms during the curing process on the top of the dried screed using dust extracted powerful industrial sanders. This is a service that Gyvtec Ltd offer. Please see the other services section of the website for further details or get in touch for a quote today.

Q. I’ve heard that liquid screed takes ages to dry and holds up a project, is this true?
A. Calcium Sulphate screeds dry at a rate of 1mm per day up to 40mm and 0.5mm per day thereafter.

Q. I don’t have that much time for the floor to dry, are there any other options?
A. If the above drying times do not work for your project, Gyvtec Ltd can offer fast drying, cement based liquid screeds that are able to be tiled on in as little as 14 days.

Q. How much screed will I need?
A. Our trained operatives will use laser measures to calculate the exact quantity you will need for your room. For an initial quote, just m2 and depth is required. We recommend 50mm to be the optimum depth of the screed laid for both drying time and underfloor heating pipe coverage.

Q. Is it true that underfloor heating takes ages to heat up and cool down and when it’s hot that it gets too hot?
A. A correctly installed underfloor heating system put in place by Gyvtec Ltd with intelligent thermostats will allow you to pre-program the times that you want your floor to heat up and set the room temperature that you would like the system to maintain. The intelligent controls will build up a pattern of the building’s heating requirements resulting in a constant heat throughout the building.

Q. My friends says that radiators are much better then underfloor heating as you can give them a quick boost when you want to warm up a room quickly. Is she right?
A. With a correctly installed underfloor heating system, it will keep a room at an even temperature throughout, eliminating the cold spots that are consistent with radiators.

Q. I have heard stories about floor coverings failing with liquid screeds. It’s really putting me off , might this happen to my floor?
A. This is very possible if the aftercare advice is disregarded. There are three things that could cause the flooring to fail; The screed is too wet – All the operatives at fully trained and perform a pre-pump flow test to ensure that the screed is at optimum fluidity. Surface Laitance has not been removed – We offer a full Laitance Removal Service which you can read more about in our OTHER SERVICES section. An unsuitable tile adhesive has been used – In our aftercare section and pdf download we recommend which tile adhesive to use. You can also contact your flooring manufacturer for their advice.

Q. Do I need to prime the floor and use a different tile adhesive?
A. Yes to both. An acrylic primer and a tile adhesive that is gypsum based should be used. See more details on the aftercare section of the site.

Q. What depth should the screed be installed?
A.

Bonded 25mm
Unbonded 30mm
Floating Domestic 35mm
Floating Commercial 40mm
Under Floor Heating 30mm to cover pipes

(some products 25mm nominal)

Q. Under Floor Heating seems easy to fit, can I try and do it myself?
A. At Gyvtec Ltd our under floor heating systems are carefully designed and installed to ensure accurately calculated heat losses and to insure an even distribution of warmth throughout your rooms. The systems are then filled with water and pressure tested to give you complete peace of mind. Once the screed is poured, gaining access to the pipes is very difficult to correct any faults.

Q. Can I install under floor heating on a timber floor?
A. Yes, we offer under floor heating systems where the pipes run between the floor joists.