Floor Preparation

Floorcoverings will only be as good as the floor preparation underneath it. The stability and finish of the flooring is reliant on a well prepared subfloor.

What is Floor Preparation?

 


Subfloor preparation work may involve anything from mechanically grinding old bitumen or other contaminants to applying liquid damp proof membranes or screeding the floor.

What is involved in Preparing a Subfloor

 

Before any floor covering is laid, the subfloor must be stable and smooth. The floor is mechanically prepared to remove any contaminants like old adhesive, paint or unstable screed. Once the sub floor is sound, we ensure all dust and other loose substances are removed. If the subfloor moisture readings are above 75% Relative Humidity, we need to apply a liquid damp proof membrane. We can then apply a primer and screed. Finally, we will be rubbing down the screed and/or apply a micro screed to create a ‘glass like’ finish.

For timber subfloors, we usually fit 6mm flooring grade plywood and/or apply a 6mm flexible screed. This is also to provide a stable and smooth base that will be easy to bond to when fitting the floor coverings.

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Floor screeding

What is Floor Screeding

Floor screeding, different from the “builders screed,” is a specialised process involving the application of a thin (typically around 3mm) layer of material onto the subfloor. This screed creates a smooth, level, and uniform surface, distinct from the rough base it often starts as. This essential step rectifies subfloor imperfections and ensures a secure and even foundation for various flooring materials, such as Luxury Vinyl Tiles, vinyl or laminate. Its role in providing stability and a polished finish is pivotal for achieving a professional and enduring flooring solution.

Why Subfloor Preparation Matters?

 

Proper subfloor preparation is crucial for several reasons:


Ensures Bonding: A smooth base is essential for a strong bond between the subfloor and floor covering. Imperfections in the subfloor can become visible through the floor covering over time.


Moisture Protection: Applying a damp-proof membrane safeguards the integrity of the screed and prevents moisture from compromising adhesives. This is especially vital in cases of high moisture levels or potential sources of moisture.

For timber subfloors, we usually fit 6mm flooring grade plywood and/or apply a 6mm flexible screed. This is also to provide a stable and smooth base that will be easy to bond to when fitting the floor coverings.

Sub floor Preparation

FAQ’s for Floor Design Services:

Why do you need to screed a floor?

We require a smooth base for secure flooring attachment..Imperfections in the subfloor can become visible through the floor coverings, and a strong bond between the subfloor and flooring is essential.

Importance of Proper Subfloor Preparation – Learn more about why proper subfloor preparation is crucial for the success of any flooring project.

Is your screed the same as a ‘builders screed’?

No. Our screeds are smoothing compounds with a fine finish. Generally a ‘builders screed’ is sand and cement and will be 50mm+. As standard we apply a 3mm screed as a smoothing compound.

Types of Floor Screeds – Explore different types of floor screeds and their applications in achieving a smooth and level subfloor.

How long do screeds take to dry?

Most of our screeds are walkable within 3-4 hours, but it’s usually best to wait 24 hours before installing flooring to ensure the best results.

Why do you need to apply a damp proof membrane when there is already a structural damp proof membrane in the subfloor?

If the moisture levels in a subfloor are above 75% Relative Humidity, a damp proof membrane will need to be applied to protect the integrity of the screed and stop the moisture breaking down adhesive. If a new subfloor was laid, there would be large amounts of moisture until the subfloor has fully cured. There could also be other reasons such as a leaking pipe within the subfloor or moisture coming from an external wall.

Moisture Protection in Flooring – Understand the role of damp-proof membranes in protecting flooring integrity and preventing moisture-related issues. Read Section Seven, Page 60 of the CFA Guide to Contract Flooring

How much does floor screeding cost?

The cost of floor screeding can vary based on several factors, including the type of screed used, the size and complexity of the area, and any additional preparations required. At Olivers Contracts, we believe in providing a comprehensive service. That means we typically include floor preparation as part of the overall package when fitting the finished product. This ensures that the subfloor is perfectly suited to receive the final floor covering, guaranteeing a seamless and long-lasting result. By bundling these services together, we can offer our clients a more efficient and cost-effective solution for their flooring needs.

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Floor Screeding Contractors – Our Commitment to Quality Subfloor Preparation

 

We have invested a lot of time and money into various types of machinery to grind off and stabilise subfloors. With all our experience, we pride ourselves on being able to solve whatever problems a subfloor can present. We deal with all the leading subfloor preparation manufacturers and insist on only using premium materials and the best product for each situation.