Why use an Anhydrite Floor scrudding?

The Managing Director is Andy Parkin.Anhydrite scrudden, what is it?

There is no cement in the mix because it is an anhydrite binder.

The majority of it in the UK is from the chemical industry.Acid is a waste product that would normally go to landfill, but in this case it is used in a process called milling.

Does that mean there is a negative effect on the product?Does it mean that it is weaker?It isn't as durable?

No, none of those things.It is the same strength.Whether your project is a 50-year life or 100 year life, it will be able to meet those requirements because it works to its designed strength.

It is a recycled product, has eco-credibility, and has a far less carbon footprint than a traditional cement-based product.

Any product with water will shrink.The shrinkage in a cement-based product is usually much larger than it is with anhydrite.We can lay in a larger base because there is less risk of cracking.

When working with an aspect ratio of 2:1, the bay size with traditional sand cement should be no more than 40 m2.You can get a 300 m2 of anhydrite screed with under-floor heat.You are looking at 1,000 m2.

You can see the difference.The aspect ratios will reduce the bay size if there are any restrictions.

How quickly can you get to the anhydrite?It is usually 24 hours, but you have to keep an eye on the conditions.It could be 48 hours if the area where the screed is being laid has poor conditions.Sometimes it can be a little bit longer.Usually, 24 hours is the time when you will be able to light foot traffic.

One of the things that you notice when you look at sand cement is that it will sometimes curl.You get a small amount of curling at the ends.It is similar to putting a slice of bread on the side in the kitchen and then coming back to it after a couple of days, and it is all curled at the edges.That is what it is doing.The dry side is drying quicker than the wet side.

Do you need reinforcement with anhydrite?When we put reinforcement into a screed, it's not to make it stronger, but to reduce the chance of it cracking.We don't need fibres adding because the product is very small.

It can be pumped up to 200 metres.The truck mixer is used to deliver the screed to the pump.The pump is a worm-fed system, and a screw pushes the screed through the pipe.The point where the truck mixers come in is 200 metres away.That gives you a lot of flexibility.If greater length is required, there is an opportunity to use pumps.

How fast does it pump through?A machine can discharge 20 metres of material per hour.6 cubic metres at 50mm depth will cover an area of 120 square metres.You can see it within an hour.

The productivity is very high.It depends on good preparation, everything being lasered and ready, and then you are able to work straight through.Everything needs to be done correctly during the finishing process.If the conditions on site are right, you could end up laying anything up to 1,500 square metres.

It is almost twice the thermal conductivity of a traditional sand and cement product when laid with this system.Think of the cost savings of that screed that will heat and cool quicker.

From the perspective of the site, the product is very clean and controllable.You don't have materials delivered to site, you have to store them, and you are left with big piles of materials.The area where the pipes can be flushed out needs to be cleaned.

The material is pumped through to the area where the screed is being laid in a nice and simple way.