Flooring prep

The Foundation of Every Great Floor

Professional flooring preparation is the difference between a floor that lasts decades and one that fails within years. Whether it's self-levelling compound, damp proof membrane installation, or subfloor repairs, proper preparation ensures your new flooring sits on a stable, dry, and perfectly level surface. Across the Cotswolds and Gloucester, we provide comprehensive subfloor preparation services for all flooring types — because no amount of expensive flooring can fix a bad base.

Why Flooring Preparation Matters

Your subfloor is the foundation of your entire flooring system. Skip proper preparation, and you risk:

  • ❌ Uneven surfaces — causing visible dips, bumps, or gaps in your finished floor

  • ❌ Moisture damage — leading to warping, mould, or adhesive failure

  • ❌ Premature wear — flooring breaks down faster on unstable or damp subfloors

  • ❌ Wasted money — even premium flooring won't last if the base is poor

  • ❌ Voided warranties — most flooring manufacturers require proper subfloor prep to honour guarantees

Whether you're installing engineered wood, LVT, laminate, or Cotswold stone, the preparation work is just as important as the flooring itself. We treat every subfloor with the same care and precision as the finished product.

Our Flooring Preparation Services

As a local Cotswolds flooring specialist, we handle all aspects of subfloor preparation with professional-grade materials and techniques:

1. Subfloor Assessment & Moisture Testing

Every job starts with a thorough inspection. We'll check:

  • Moisture levels in concrete or timber subfloors using professional moisture meters

  • Subfloor flatness — identifying dips, humps, or uneven areas

  • Structural integrity — looking for cracks, movement, or loose boards

  • Existing floor coverings — determining what needs removal and what can stay

This assessment determines which preparation methods are needed for your specific property.

2. Self-Levelling Compound Installation

Self-levelling compound (also called liquid screed or latex screed) creates a perfectly flat, smooth surface for your new flooring. We use premium products from brands like Ardex, Weber, Mapei, and Bal depending on your requirements.screwfix+3

When it's needed:

  • Concrete floors with dips, humps, or uneven surfaces

  • Timber floors requiring a smooth base for vinyl or LVT

  • Floors where height needs to be built up to match adjacent rooms

  • Any flooring requiring a perfectly level surface (especially LVT and engineered wood)

Our process:

  • Clean and vacuum the subfloor thoroughly

  • Apply primer to ensure proper adhesion

  • Mix and pour self-levelling compound to the required depth (typically 3–50mm)

  • Spread evenly with specialist tools — the compound self-levels to create a flat surface

  • Allow to cure (rapid-set: 3–24 hours, standard: 24–48 hours) before flooring installationmixdesigncalc.co+2

Coverage: One 25kg bag covers approximately 3–3.5 m² at 5mm depth, or 1.5–1.75 m² at 10mm depth.mixdesigncalc.co

3. Damp Proof Membrane (DPM) Installation

Damp proof membranes protect your flooring from moisture rising through concrete subfloors — a common issue in Cotswold stone properties and ground-floor rooms. We install both sheet DPMs and liquid epoxy DPMs depending on the situation.wickes.co+5

When it's needed:

  • Ground-floor concrete slabs (especially in older Cotswold homes)

  • Basements or cellars being converted to living spaces

  • Properties with known damp issues or high moisture readings

  • Any flooring installation over concrete where moisture levels exceed manufacturer limits

Our process:

  • Clean and prepare the concrete subfloor

  • Apply liquid epoxy DPM (2–3 coats) or lay sheet DPM (1200–1600 gauge polythene)

  • Seal all edges and joints with specialist tape

  • Test moisture levels after curing to ensure the membrane is effective

  • Proceed with flooring installation only once the subfloor is confirmed drywickes.co+3

Products we use:

  • Liquid epoxy DPM — ideal for irregular surfaces, cures to form a waterproof barrier

  • 1200–1600 gauge polythene sheet DPM — rolled out and taped for large, flat areas

  • PermaSEAL, Newton, and Platon membranes — premium brands for long-term protectionwickes.co+2

4. Subfloor Repairs & Stabilisation

Before any levelling or damp proofing, we address structural issues:

For timber subfloors:

  • Replace rotten or damaged floorboards

  • Secure loose boards with screws (not nails — they can work loose over time)

  • Add additional joist support if floors are bouncy or flexing

  • Sand down high spots or uneven board edges

For concrete subfloors:

  • Fill cracks and holes with appropriate repair compounds

  • Grind down high spots or ridges

  • Remove old adhesive, paint, or contaminants that could affect adhesion

  • Apply stabilising primer to dusty or friable concrete surfaces

5. Floor Removal & Disposal

If you have old flooring that needs removing before preparation work can begin:

  • Carpet and underlay removal — pulled up, rolled, and disposed of responsibly

  • Vinyl, LVT, or linoleum removal — lifted and adhesive scraped or ground off

  • Tile removal — ceramic, porcelain, or stone tiles broken up and removed

  • Wood flooring removal — engineered or solid wood lifted and disposed of

  • Screed removal — if existing screed is damaged or at wrong height

We handle all waste disposal at licensed recycling centres — you don't need to arrange skip hire or disposal yourself.

When Flooring Preparation Is Essential

You'll need professional subfloor preparation if:

  • ✅ Moisture readings are high — above 75% RH (relative humidity) for most flooring types

  • ✅ Visible dips or humps — more than 3mm variation over a 1-metre span

  • ✅ Old flooring removal — adhesive residue, uneven screed, or damaged boards remain

  • ✅ New build or extension — concrete needs curing and levelling before flooring

  • ✅ Changing flooring type — going from carpet to hard flooring requires smooth, level base

  • ✅ Underfloor heating installation — requires specific screed depth and thermal properties

  • ✅ Period property renovation — old Cotswold stone floors often need levelling and damp proofing

Not sure if you need preparation? We offer free site surveys with moisture testing and subfloor assessment — we'll tell you exactly what's needed and provide a transparent quote before any work begins.

Why Choose Faber Building for Flooring Preparation?

  • 🏠 Local Cotswolds specialists — we understand the challenges of Cotswold stone properties and old buildings

  • 🔧 Professional-grade materials — Ardex, Weber, Mapei, Bal, PermaSEAL — quality you can trust

  • 📊 Moisture testing included — we don't guess, we measure with professional meters

  • ⏱️ Fast, reliable service — free quotes within 24 hours, clear timelines, no surprises

  • 🧹 Leave it better than we found it — protected floors, clean work areas, respectful of your home

  • 💬 Honest advice — we'll tell you what preparation is actually needed, not upsell unnecessary work

  • ✅ Warranty-compliant — our preparation methods meet all major flooring manufacturer requirements

Frequently Asked Questions

How long does self-levelling compound take to dry?

Rapid-set compounds are walkable in 3–4 hours and ready for flooring in 24 hours. Standard compounds take 24–48 hours to fully cure before flooring can be installed. Drying time depends on depth, temperature, and humidity — we'll give you a clear timeline based on the product used.mixdesigncalc.co+2

Do I really need a damp proof membrane?

If moisture readings in your concrete subfloor exceed 75% RH, most flooring manufacturers require a DPM to protect your warranty. In Cotswold stone properties and ground-floor rooms, damp proofing is often essential — skipping it risks warping, mould, or adhesive failure. We test moisture levels and advise based on actual readings, not assumptions.wickes.co+3

How thick does self-levelling compound need to be?

Minimum depth is typically 3mm for most products. Maximum depth depends on the product — standard compounds go up to 10–15mm in one pour, while deep-fill compounds can reach 50mm+. We'll assess your subfloor and recommend the right product and depth for your situation.mixdesigncalc.co+2

Can you prepare subfloors for underfloor heating?

Yes — we install UFH-compatible screeds and levelling compounds with appropriate thermal properties. Liquid/pumped screeds are ideal for underfloor heating as they flow around pipes and provide excellent thermal conductivity. We'll ensure the screed depth and thermal resistance match your UFH system requirements.mixdesigncalc.co+1

Do you remove old flooring before preparation?

Yes — we offer full removal and disposal services for carpet, vinyl, tiles, wood flooring, and old screed. All waste is taken to licensed recycling centres. Removal costs are included in your quote so there are no surprises.myjobquote.co

How much does flooring preparation cost?

For a typical room (15–25m²), expect:

  • Self-levelling only: £300–£600

  • DPM + levelling: £500–£1,000

  • Full preparation (removal, repairs, DPM, levelling): £800–£1,500+

Exact costs depend on subfloor condition, required depth, and products used. We provide free, detailed quotes after site survey and moisture testing.mixdesigncalc.co+2

Can preparation work be done on the same day as flooring installation?

For rapid-set compounds, yes — flooring can often be installed the next day. For standard compounds or DPMs, we recommend allowing 24–48 hours for full curing. We'll schedule preparation and flooring installation to minimise disruption — sometimes we can complete both in 2–3 days total.

What's the difference between self-levelling compound and traditional screed?

Self-levelling compound is a latex-modified, flowable product that creates a perfectly smooth surface with minimal effort — ideal for thin applications (3–50mm). Traditional sand/cement screed is cheaper but requires more skill to level and takes longer to dry. For most domestic flooring, self-levelling compound is the better choice — faster, smoother, and more reliable.mixdesigncalc.co+2

Ready to Prepare Your Subfloor?

Get a free, no-obligation quote for flooring preparation in the Cotswolds, Gloucester, Chipping Norton, or Cirencester area.

📞 Call or text us today — we'll provide a fair quote within 24 hours and arrange a site visit with moisture testing and subfloor assessment.

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