There are a number of steps that you need to take to prepare the floor for screeding. Our team are experienced and qualified to apply liquid screed. Preparation is key when it comes to laying a liquid screed, so here’s our guide.
1) Measuring the amount of screed
It’s very crucial that you use the correct amount of screed, here at Central Flow Screed we provide the perfect amount of mixed batches with no inconsistencies. This prevents you from wasting money if there’s too much screed whilst reducing the need to dispose of excess screed.
2) Removing debris and lay insulation
It is important to make sure that the area to be screeded is made water tight, removing all dust and debris from the floor beforehand. Then if you’re adding insulation, this should be done below the waterproofing membrane.
3) Laying the watertight membrane
You can use a polyethylene sheeting which will create a waterproof membrane. This prevents all leaking of the screed when pumped in. It’s recommended to use 1000 gauge or thicker. The polyethylene should be curled up at the edge of the area to be screeded and stuck to the wall. Make sure all joints are taped.
4) Waterproof Shuttering
You’ll need to work around obstacles and troublesome pipe work so that water doesn’t get to them. Where this is shuttering, such as across doorways, you can seal with mastic or expanding foam so that it’s watertight.
5) Securing Underfloor heating pipes
If you are using underfloor heating, it’s important to secure the pipes or trays inside the polyethylene. Generally the clips are self-sealing, it’s important that nothing is able to float up when the liquid screed is poured.
Now that you’ve sealed and made the area watertight you are now ready to pour the screed. It’s recommended to fill the underfloor heating pipes to stop them from floating up in the liquid screed.
Based in the West Midlands, Central Flow Screed is one of the UK’s leading installers of underfloor heating, liquid and flowing screeds. As approved contractors with the major screed suppliers we provide nationwide coverage and have over 15 years’ specific industry experience.
If you have any further questions or enquiries, please contact out specialists today!