Useful Information

We are happy to provide useful information and top tips
for Floor Screeding for you

For any technical questions you may have, please contact us

We cannot all be experts in Floor Screeding, so whether it is advice on preparation or which type of screed you require, we are here to help you get your property ready for Underfloor Heating and Insulation.

View our tips below in which we hope it is of some use to you:

No gaps

Have you got a designated wash out area? An old rubble heap or a skip is ideal.

Wash out area

Have you got a designated wash out area? An old rubble heap or a skip is ideal.

Cleansing

Is the floor clean from any insulation dust, mud etc? This could rise to the top of the screed and prevent a smooth surface finish.

Slip membrane

Do you have a slip membrane tightly fitted on top of your insulation?

Soil stacks

Have you installed a perimeter expansion strip around all internal and external walls and soil stacks? (25mm insulation upstands do not act as expansion strip)

Taped up

Have you used duct tape to tape all polythene joints and perimeter strip? Do not use aluminium/foil tape as this will react with the screed.

Plenty of clips

Are your Underfloor Heating pipes secured?

Pressure

Is your manifold filled and pressure tested?

Know your floor level

Do you know your datum point? – Co-Dunkall Ltd suggest a minimum of 50mm average depth with UFH (thin section screeds are available)

Know your screed

Ensure only plaster based products are used for Anhydrite screeds and only cement based products are used for cementitious screeds.

Avoid frozen pipes

We recommend using anti-freeze at point of installation of your underfloor heating to avoid frozen pipes, which is also a service we offer.

Preparation is key

Make sure you prepare your surface correctly. Remove any laitance before final finishes are installed by sanding your screed correctly.

Not sure how much screed you require?
Use our helpful screed calculator

What screed do I need?

Unsure which type of screed is suitable for your project? This handy table below will help! Alternatively, contact our team to run through the options

Select the table below to expand image and zoom if necessary.

What is Cemfloor?

Cemfloor is a quick-drying, cement based liquid screed and is one of our most popular products. Following on from its list of advantages above, it’s also a product we batch and supply ourselves via our transmix lorry which offers you improved productivity and reliability.

This product is suitable for use with cement-based adhesives, meaning there is no need to purchase extra specialist adhesives as you may have to with anhydrite screeds.

What is Anhydrite Screed?

Anhydrite screed is a pump applied, self-compacting floor levelling solution that can be laid at a much thinner depth than traditional screed methods. Its liquid properties allow for faster install times allowing for increased productivity on site. There are a wide variety of anhydrite screeds to choose from, including high strength and high thermal efficiency.

Did you know?
Our concrete is supplied locally at our office address

Read what our customers had to say

    
 
 
         
   S Pearson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service, professional and reliable each time we use them.
  
 
        
   A Thompson 
 
 
 
 Trustindex verifies that the original source of the review is Google. The team did a professional and courteous job for over 100m2 with insulation. Helpful advice, efficient measures, laying out was done with attention to detail. Pouring was prompt and careful. The skip liner was much appreciated. The levels were perfect for our doors. Helpful advice and ensured we’re satisfied with the results. Thank you and well done. 👍🏻
  
 
        
   M Boby 
 
 
 
 Trustindex verifies that the original source of the review is Google. Co-Dunkall ltd recently laid a floor screed for a new gymnasium floor.Very pleased with the service they provided throughout the process.Hard working team that kept me informed of deliveries to site and left the site spotless .Client super impressed with the floor finish .
  
 
        
   O V 
 
 
 
 Trustindex verifies that the original source of the review is Google. I did screed with them twice, we had our house done in 2 phases and in the 1st phase they supplied us with specific stats, on the 2nd phase they supplied us with different stats model and a control box which allows to connect to them remotely but, then I had an issue with the phase 1 stats won't connect to the system as they don't support that functionality. I rang their customer support and explained the issue, they offered to swap the phase 1 stats with new ones so, all stats will be from the same model and all will connect to the control box.
One more word about their expertise, the 2 phases were done a part so the 1st phase screed was higher than the existing old bit, when they came to do the old bit on the 2nd phase, I asked if they can do the screed so that both bits will be same height, they did it perfectly, both phases met up level and the wood floor on top is at the same height, I must say I was sceptic but, these guys are awesome, they are experts in what they do. that made me so happy!
That is a company who cares about their business and about their customers.
I will definitely recommend and will definitely do business with them again.
Thanks you Co-Dunkell
  
 
        
   P W 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had our screed pumped in and laid by the team at Co-Dunkall today at our self-build, the three man team onsite and those in the office were all professional and friendly at all stages from quotation, survey and the final delivery and instation. Everyone has done what they said they would do and within the timescale given. If you need pumped floor screed I can recomend this company 100%
  
 
        
   H Campbell 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very good service. Nicky and Adrian super helpful to see the job through! 5 star. Screed is silky smooth
  
 
        
   M Brooks 
 
 
 
 Trustindex verifies that the original source of the review is Google. Complete bungalow floor screeded by these guys.
Bob who surveyed the project and supervised the screed being laid is a credit to the company. No more than 1mm difference in levels throughout !
  
 
        
   S smith 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had Co-dunkall provide a cemfloor screed for an outbuilding which needed the floor raising. Thoroughly professional service 3 survey calls and inspections prior to the job. Nikki and the office team all highly knowledgable on so many aspects and on the day they even provided a 6 wheel mini mix to accommodate the property complexities. Good follow up and so pleased for a  very clean and tidy washout considering how messy the job can be. You would not know they had been on site. End result is exactly what we needed
  
 
        
   L Bailey 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent job and Excellent service.
Had 100% confidence in them.
Can't fault them.
They are very professional and they have a lovely approach to customer service.

We have used Co Dunkall on any occasions and will do so in the future.

Would highly recommend.

Thank you very much from the Bailey's.
  
 
  
 
  
 
   Google rating score: 4.8 of 5, based on 53 reviews