Levelling Potters Bar floors where extension meets house
The join between an old semi and its extension is where problems show. Even a small step or a gentle slope across the doorway will show through thin flooring, and a long run of LVT from the kitchen into the extension exposes every change in level.
Flatness has a standard. Lay a 2m straightedge on the floor and BS 8204 sets the largest gap allowed under it: SR1 permits 3mm, SR2 permits 5mm and SR3 permits 10mm. Vinyl sheet and similar thin finishes commonly call for SR1. A floor that is out by more than the flooring maker allows needs correcting first.
On a primed base, the compound normally goes on between about 2mm and around 10mm thick, and certain products can be laid deeper. It runs out smooth and flat on its own, then dries quickly. We match the primer to the base, as old tiles, bare concrete, calcium sulphate screed and sand and cement screed each want a different one.
There is a limit. If the old floor has settled badly, sounds hollow or crumbles, compound will only mask the fault and can crack and debond. Floors like that need breaking out and a new sand and cement screed for Potters Bar floors. We will tell you honestly which is needed after looking at the floor. Where adhesive, paint or old coatings are in the way, our floor preparation work comes first.
Refits at Cranborne House and Summit House
Commercial refits in Potters Bar centre on the Cranborne Industrial Estate, which runs beside the railway line. It has light industrial units and large multi-let buildings, including Cranborne House and Summit House. Older floors like these often need concrete repair, grinding and resurfacing during a refit.
Where a unit includes office space, carpet tiles or vinyl will normally need the floor levelled first. Fast drying compound lets the flooring contractor follow on quickly, which suits a tight fit-out programme where the tenant wants to move in on a fixed date. Before the compound goes on, old carpet adhesive, loose screed and any contamination have to come off, and cracks or holes in the concrete are filled so the compound has a sound base.
The same approach suits shops and small offices elsewhere in town. A worn floor that is otherwise sound can be primed and levelled in a day, then handed over for the new finish. On workshop and industrial floors, thin compound is the wrong answer where vehicles or heavy loads run, and concrete floor grinding or repair suits better.
We prepare, prime and pour the compound with our own team. We do not sand wooden floors or sell levelling products for DIY. For levelling in nearby towns, see floor levelling in Borehamwood.
How we price floor levelling in Potters Bar
A fixed written price within 24 hours, once we know the area and the base. See our floor screeding cost guide.
Who levels your floor in Potters Bar

K & B Screeding’s own team, led by director Donatas Bardisevicius. Founded 2019, company 12298780.
See what customers say in our Google reviews and on our testimonials page.
Floor Levelling from Slough to Potters Bar
As the crow flies, our yard in Slough is about 22.5 miles from Potters Bar, which lies to the east-north-east. Postcodes here include EN6, and Borehamwood (4.1 miles), Hatfield (5 miles), Enfield (5.6 miles) and Barnet (5.7 miles) are close by.
More on floor levelling, part of our screeding services. Not sure whether you need a thin compound or a full flowing screed? See self levelling screed explained.